HARYANA VIDYUT PRASARAN NIGAM LIMITED
SPECIFICATION NO. : HGD/S-58/R-7 (A)/DGM-89
TECHNICAL SPECIFICATION
FOR
11 kV, 12 PANEL BOARD
VACUUM TYPE SWITCHGEAR (1250A)
(FOR AUTOMATIC CAPACITOR BANK)
CHIEF ENGINEER/MM,
HVPNL, PANCHKULA.
JANUARY, 2015
0
TECHNICAL SPECIFICATION FOR
11 kV SWITCHGEAR PANELS VACUUM TYPE
1250 AMP RATING
1.0
SCOPE:
This specification covers the design, manufacture, assembly, testing at manufacturer's
works before despatch, supply and delivery F.O.R. destination as per schedule of
requirement (Annexure 'B') of Vacuum Type, 12 Panel 11 kV Switch boards having
normal current rating of 1250 Amps. with rupturing capacity of 500 MVA.
2.0
STANDARDS:
The switchgear panels shall comply in all respects the requirement laid down in the
latest editions of IS: 13118-1991, IS: 3427 & IS: 3231.
3.0
CLIMATIC CONDITIONS:
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
The equipment is required to operate satisfactorily under the following site conditions:
Max. temperature
500C
Min. Temperature
-2.50C
Max. relative humidity
100%
Min. relative humidity
26%
Average number of rainy days per
Nearly 120 daysannum.
Average annual rainfall
900mm
Average number of dust storm days
35 per annum.
Isoceraunic level
45
Max. wind pressure
195 kg/Sq.mt.
Altitude above mean sea level
Less than 1000 mts.
3.11
Auxiliary Power Supply:Auxiliary electrical equipment shall be suitable for operation on the following supply
system:-
a)
Power devices
(like drive motors)
b)
DC alarm, control and
protective devices
i)
c)
Lighting
415 V, 3 phase 4 wire 50Hz, neutral grounded AC supply
220V DC, underground 2 wire for 220 KV 132 KV &
66 KV Sub-Station.
245 V, single phase, 50 Hz AC Supply.
Each of the foregoing supplies shall be made available by the purchaser at the terminal
point for each circuit breaker for operation of accessories and auxiliary equipment.
Bidders scope include supply of interconnecting cables terminal boxes etc. The above
supply voltage may vary as below and all devices shall be suitable for continuous
operation over the entire range of voltages.
i)
AC Supply
ii) DC Supply
voltage + 10% & -15 %, frequency ± 5%
± 10%
1
4.0
TYPE & RATING:
The panels 11 kV switchgear panels shall comprise of 11 kV Vacuum Type circuit
breakers, instrument panels and instrument transformers etc. suitable for indoor use.
The equipment shall be totally enclosed in a metal clad cubicle, dust and vermin proof
with necessary isolation arrangement. Each panel shall be easily extensible on either
side and should be complete with necessary internal copper connections, small
wiring, L.T. fuses and supporting frame work with bolts to secure it to the floor. The
Circuit Breakers shall be draw out type in horizontal position.
Principal parameters
4.1
4.2
The breakers shall have the following ratings:
Type
Vacuum
No of poles
3
4.3
Nominal system voltage
11 kV
4.4
Highest system voltage
12 kV
4.5
Rated frequency
50 +/- 1.5 Hz
4.6
Rated continuous current
rating at an ambient
temp. as specified in
IS : 13118-1991
(Latest edition)
4.7
Symmetrical breaking
capacity
500 MVA
4.8
Impulse withstand test
voltage
75 kV (Peak)
4.9
One minute power
frequency withstand
test voltage
28 kV (rms)
4.10
Short time current
rating
Not less than 26.2 kA current
corresponding to 500 MVA for 1 sec.
4.11
System neutral
Solidly earthed.
5.0
GENERAL DESIGN OF SWITCHGEAR PANELS :
5.1
OPERATING MECHANISM:
The vacuum type circuit breaker shall be draw out type & trip free. The VCBs shall be
suitable for operation from 220 V DC auxiliary supply. The operating mechanism shall
be motor operated spring charged type. There shall be provision(s) for manual
charging of closing spring and emergency hand trip. The motor used for the purpose
will be suitable for 240 V AC as well as for 220 V DC.
1250 Amp for incoming & 400 Amp
for outgoing feeders.
2
The operating mechanism shall work satisfactorily at 85 % - 110 % of rated supply
voltage. The VCB shall have 2 normally open & 2 normally-closed auxiliary contacts
over & above the ones required for various control & supervision circuits.
5.2
INSTRUMENT PANELS :
Each unit shall have its own instrument panel provided at the top & complete with
small wiring connections from relays, instrument transformers, metering instruments,
indicating instruments, selector switches & circuit breaker control switch. All wiring
shall be carried out by using stranded single annealed copper conductor insulated
with poly vinyl chloride insulation suitable for 650 V service and in accordance with
IS:732-1963. CT/PT circuit shall use wire of not less than 4.0 mm2 cross-sectional
area whereas control/alarm/supervision circuit shall use wire of not less than 2.5 mm 2
cross-sectional area.
All wires will be continuous from one terminal to the other and, also will have no
Tee-junction enroute. The connections shall be securely made with the help of
connecting lugs duly crimped on to the copper conductor. The meters and relays shall
be mounted in a convenient position so as to be readily accessible for inspection or
repair. The terminal board provided in the instrument panel of VCBs will be made of
moulded dielectric having brass studs, washers, holding nuts & locking nuts. All
holding nuts shall be secured by locking nuts. The connection studs shall project 6
mm from the lock nut surface. NO OTHER TYPE OF TERMINAL BOARD IS
ACCEPTABLE. The panels shall have a degree of protection of IP-4x. The leads from
metering CTs shall be directly terminated at TTB & there from at the KWH meter/SEM
with a provision to seal TTB and KWH meter/SEM. The said CT leads will be
concealed to prevent their tempering enroute. Similarly PT leads from secondary box
of the PT to TTB & there from to energy meter including inter panel PT leads will also
be concealed to prevent their tempering. The mode & extent of concealing the
metering leads of CTs & PTs to prevent their tempering (by unscrupulous operating
personnel) will be discussed & mutually agreed upon with the successful bidder(s).
TTB used on the instrument panel should be suitable for front connections.
Earthing of current free metallic parts or metallic bodies of the relays/switches
mounted on the instrument panel and metal enclosed switchgear shall be done by a
suitably sized copper conductor. Earth bus made of 25x3 mm bare copper flat will be
extended through entire length of 11 kV switch-board with suitable provision to
connect it to the sub-station earth at the extremities. The earthing arrangement will
meet with the requirements laid down in IS : 3427 read with its latest amendment.
5.3
VACUUM INTERRUPTER:
The Vacuum interrupter of 12 kV minimum 26.2 kA short time current rating, 2000
Amp. normal current rating capable of withstanding minimum 100 full short circuit
operations as per test duty 1 to 5 of IEC-56. Vacuum Interrupters for incomers as well
as outgoing shall be of same type. These vacuum interrupters shall be of approved
make only.
5.4
INSTRUMENT TRANSFORMER:
The secondary voltage & current rating of the instrument transformers shall match
with the metering or protective equipment. The CTs shall have ratio & accuracy class
as mentioned in the schedule of requirement. The CTs shall be wound/ring type in
accordance with their ratings. The terminal boards associated with
differential CTs, REF CTs & over current/earth fault protection CTs will be of
disconnecting type having short circuiting facility &thus facilitate secondary testing of
3
concerned protective relay without disturbing the associated small wiring. Interchangeability of housing of CTs from one panel to another must be ensured.
A resin cast potential transformers shall be provided on the Incoming side of each
panel set & shall be star/star connected as per attached Schedule of Requirement
“Annexure-‘A’.
The neutral point of star connected secondary windings of instrument transformers
shall be earthed to the main earth bus referred to in the concluding paragraph of
clause 5.2. Multiple earthing of any instrument transformers shall be avoided.
5.5
BUS - BARS:
All the panels shall be provided with one set of 3 phase 1250 Amps. heat shrunk PVC
Sleeves insulated Main electrolytic copper bus bars for all switchboards and shall be
connected in a separate moisture and vermin proof sheet metal chamber. The
bus-bars connections & insulator supports shall be mechanically strung & rigidly
supported so as to withstand the stresses generated by vibrations, variations in
temperature and due to severe short circuits.
The bus bars shall be Heat shrunk PVC Sleeves insulated type and supported on
insulators at short intervals keeping adequate clearance as per IE rules between bus
bars and earth. The bus bar chamber shall be provided with inspection covers with
gaskets & bus bar shutters. Provision shall be made for future extension of bus bar &
switch board.
5.6
LIMIT OF TEMPERATURE RISE:
The temperature rise of the current carrying parts shall not exceed the permissible
limits above the ambient temperature as per relevant standards (latest edition).
However, the reference maximum ambient temperature may be taken as 500C.
5.7
BUSHING INSULATORS:
These shall comply with the latest issue of IS : 2099 in all respects.
5.8
DISCONNECTORS OF CIRCUIT BREAKER & THEIR INTERLOCKS:
All disconnectors (isolators) of the 11 kV VCBs & interlocks between different pieces
of apparatus provided for reasons of safety & for convenience of operation of
switchgear shall meet with the requirement of IS:3427-1969 read with its latest
amendment. Efficient mechanical interlocking shall be provided to meet the following
conditions
i)
It shall be possible to insert/withdraw the breaker only after circuit breaker has
been opened.
ii)
It shall be possible to insert/withdraw the breaker only when it is fully open
position as well as it is in Isolated/test position.
iii)
It shall not be possible to remove the breaker until the moveable plug unit
having secondary connections has been withdrawn.
iv)
It shall not be possible to replace in position moveable plug unit unless the
circuit breaker has been racked in.
v)
Provision of shutters or locks shall be made to prevent access to bus bar
chambers and receptacles when the circuit breaker is withdrawn.
vi)
Provision shall be made for locking the circuit breaker closing mechanism in
open position.
4
5.9
CABLE BOXES:
Each 11 kV incoming VCB shall be provided with cable boxes suitable for receiving
2 sets of cable each comprising 3 nos 630 mm2, 11 kV single core XLPE, outer PVC
sheathed cables. Accordingly, joining kits and sealing material shall be provided for 2
sets of cables. The 11kV Capacitor controlling VCB (panel with CT ratio 800-400/5A)
shall be provided with 2 sets of cable boxes suitable to receive 2x3 core 11kV XLPE
PVC sheathed cable of size upto 400mm2. The 11 kV station transformer VCB shall
be provided with cable boxes suitable to receive 3 core, 11 kV, XLPE cables of size
upto 50 mm2 (panel with CT ratio 60-30/5 A). Each cable box shall have vertical entry
from below. These cable boxes shall be complete in all respects including cable
glands of requisite size. The cable boxes should only be either heat shrinkable or
push on type. The cable boxes for outgoing panels are not in the scope of this
specification.
5.9 A EARTHING TRUCK:
One no. earthing trolley should be provided for each incomer panel. Earthing trolley
must be full fault make type device which is capable of making fault at 65.5 KA(peak)
and carry 26.2 KA for one second. The earthing truck for incoming panel must be so
designed that it is impossible to earth a live circuit.
5.10
SUPERVISION SCHEME :
5.10.1 Instrument panels on each of the 11 kV VCB covered by this specification shall be
provided with the following indicating lamps/relay:Circuit breaker `open'
Green
Circuit breaker `close'
Red
Auto trip
White
Circuit breaker spring charged
Blue
For monitoring of trip circuit both in pre-close and post- close position of the circuit
breaker, 1 no. automatic trip circuit supervision relay will be provided on each of the
11 kV (incoming) instrument panel. In case of trip circuit becoming faulty, the
operation of this relay shall be accompanied by visual and audio annunciation in
accordance with clause 5.10.1 of the specification.
However, the trip circuit of each of the 11 kV outgoing/capacitor/Stn. VCB will be
monitored `on demand' with the help of an indicating lamp & a push button both when
the VCB is `open & closed'. The lamp will be `amber' coloured.
Circuit breaker `close' & `open' lamps will be wired so as to be on 240 V AC under
`normal' condition. These lamps will be switched over to 220 V DC automatically
in the event of failure of 240 V AC supply. Each of 11 kV (incoming) instrument panel
will be equipped with a suitable relay for the purpose.
5.11 ALARM SCHEME :
5.11.1 NON TRIP ALARM SCHEME:
Each of 11 kV (incoming) panel will be provided with a non-trip alarm scheme
comprising suitable auxiliary relay (rated for 220 V DC), accept push button, reset
push button & a buzzer. It will cater to non-trip condition such as trip circuit faulty &
PT secondary fuses blow `off'. The non-trip alarm scheme will meet with the following
requirements: -
5
i)
The closing of an initiating contact shall actuate a buzzer and will be
accompanied by a flag indication on the concerned auxiliary relay.
ii)
The closing of an initiating contact shall glow a lamp which will not reset until
the fault has cleared.
iii)
It shall be possible to silence the buzzer by pressing `accept' push button. If
after cancelling the alarm but before resetting the visual signal, the same fault
persists the buzzer shall be suppressed.
iv)
If after canceling the alarm but before resetting visual signal some other fault
takes place, the alarm accompanied by flag indication on appropriate auxiliary
relay shall take place.
v)
If after canceling the alarm and after resetting the visual signal, the same fault
appears or some other fault take place, the alarm, flag indication and non-trip
lamp indication shall reappear as usual.
vi)
The non-trip alarm acceptance shall be by means of a push button and
resetting of visual signal may also preferably be done through a push button.
vii)
Means shall be provided for test checking the lamp and alarm circuit at
frequent intervals.
viii)
The equipment shall be suitable for 220 Volts DC operation.
5.11.2.
TRIP ALARM SCHEME:
Trip commands due to operation of protective relay on any of 11 kV VCB constituting
the switchboard will trip the concerned VCB. Its auxiliary contact will actuate a bell
(provided in each of the 11 kV incoming VCB) & will be cancelled by the associated
circuit breaker control handle. Auto trip lamp will glow on the concerned 11 kV VCB &
there will be flag indication on the concerned protective relay.
5.12
PT FUSE FAIL ALARM SCHEME:
Each of the 11 kV (incoming) instrument panel is to be provided with a relay to
monitor the fuses on the secondary side of 11 kV metering PT. The failure of any of
secondary fuse on the 11 kV PT will be accompanied by visual & audio
indication in accordance with clause 5.10.1 of the specification. None of the 11 kV
outgoing/capacitor/Stn. VCB will be provided with fuses & inter-circuit PT leads may
run from one bus wire board to the other.
METERING SCHEME:
Each of the 11 kV VCB will be provided with a suitably sealed ammeter (additional
dials, if any, required to cover all the taps of the CTs shall be included at the time of
bidding) with a selector switch facilitating measurement of phase currents as well as
unbalance current. The coil of ammeter shall be rated for 5 Amp. The instrument shall
be of moving iron spring controlled type of industrial grade `A' classification having
accuracy class 1.0 & shall conform to IS:1248(1968).
5.13.
5.13.1
5.13.2
Each of the 11 kV (incoming) VCB will be provided with a suitably sealed voltmeter
with a selector switch. The selector switch shall facilitate the measurement of phase
to phase & phase to neutral voltage of all the three phases one by one. The coil of the
voltmeter shall be rated for 110 V (phase to phase). The instrument shall be of moving
iron spring controlled type of industrial grade `A' classification with accuracy class 1.0
& shall conform to IS:1248(1968).
6
5.13.3
Each of the 11 kV VCB except the 11 kV capacitor VCB & Incomer VCBs will be
equipped with a three-phase four-wire Electronic KWH meter as per Annexure-‘D’.
11kV incomer VCB will be equipped with SEM as per Annexure-‘C’.
5.13.4
Each of the 11 kV (incoming) VCB will be provided with a power factor meter. The PF
meter having a range of 0.5Lag - one - 0.5lead shall be of 2 element type suitable for
use on three phase three wire unbalanced system. It shall be rated for 5 A CT
secondary & 110 V (phase to phase) available from 11 kV PT mounted on each of the
11 kV incoming VCB. The instrument shall be iron-cored dynamometer type having
accuracy class 1.0.
N.B.
Routine test certificates of all the indicating & integrating instruments will be submitted
alongwith the routine test certificates of 11 kV switchgear.
5.14
CONTROL SCHEME :
5.14.1
The instrument panel of each of the 11 kV VCB will be equipped with a circuit breaker
control handle of pistol grip type with spring return to neutral position and having bell
alarm cancellation contacts. The control handle shall be so designed that after being
operated to `close' a VCB the operation can not be repeated until the control handle
has been turned to `trip' position making it impossible to perform two closing operation
consecutively.
5.14 .2 The rating of the control handle shall be suitable for the duty imposed by the closing
and opening mechanism of VCB. The moving and fixed contacts shall be of such a
shape & material to ensure good contact and long life under service operating duty.
All contacts shall be readily renewable.
5.14.3 The number of contacts in the control handle will be decided by the bidder keeping in
view the requirements of this specification. Two pairs of contacts shall be kept spare.
The total number of contacts proposed to be provided shall be stated in the bid.
5.14.4 Safety against inadvertent operation due to light touch on the control handle shall be
ensured.
5.15
PROTECTION SCHEME:
5.15.1 FOR INCOMING PANELS:
The back up protection shall be in the form of a combined over current and earth fault
relay(two over current and one earth fault). The relay shall be housed in draw out
flush mounting case.
7
This shall be triple pole having Inverse Definite Minimum Time (IDMT) characteristics
with a 3/10 time current curve i.e. the relay operating time shall be 3 second at 10
times the plug setting at TMS 1. The outer element of the relay shall be arranged for
over current protection and shall have a setting range of 50-200 % of 5 A (The relay
for station transformer shall have a setting range of 20-80 % of 5 A) and adjustable in
suitable equal steps by means of a plug board. The central element shall be used for
earth fault protection with a setting range of 20-80 % of 5 A adjustable in suitable
equal steps by means of a plug board (for station transformer panels, the setting
range shall be 10-40% of 5 A ) Each of the three elements shall be fitted with shunt
reinforcing unit with hand reset operation indicator.
5.15.2 FOR OUTGOING FEEDERS PANELS:
Each outgoing feeder panel shall be provided with a triple pole IDMTL type combined
over current and earth fault relay (two over current and one earth fault element)
conforming to the technical specification stated in the clause : 5.14.1 above and one
set of triple pole instantaneous relay (high set element) in the form of two over current
and one earth fault element.
The outer element of the relay shall be arranged for over current protection and shall
have a setting range of 500-2000 % of 5 A (The relay for station transformer shall
have a setting range of 200-800 % of 5 A) and adjustable in suitable steps.
The central element shall be used for earth fault protection with a setting range of
200-800 % of 5 A (The relay for station transformer shall have setting range of
100-400 % of 5 A) adjustable in suitable steps.
The relay shall have low transient over reach with a high pick-up/ drop of ratio. The
relay will be connected in series with the triple pole combined over-current and earth
fault relay referred to above and shall be so wired so as to take this (instantaneous)
out, if so desired by the purchaser at any time during operation of the equipment.
5.15.3 FOR CAPACITOR PANEL:
Each capacitor panel shall be provided with the following relays for protection of
capacitor banks:i)
ii)
Triple pole non-directional IDMTL type combined over current & earth fault
relay (two over current & one earth fault element) conforming to the technical
specification stated in clause 5.14.1 above.
1 no. inverse time over voltage relay with setting range 100 % to 130 % of
110 V available from 11 kV PT mounted in the 11 kV (incoming) VCB along
with auxiliary transformers(for external mounting) of ratio 110/103.5 to 116.5 V
(in steps of one volt) to be used for compensating the error of over voltage
relay.
iii)
1 no. inverse time under voltage relay with setting range of 50 % to 90 % of
110 V (phase to phase connections).
iv)
1 no. neutral displacement rely with settings 5.4, 7.5, 12.5 & 20 volts and to be
fed from open delta winding of three phase (11000//3/(110//3) Volts. Residual
voltage transformer (Residual voltage transformer is not a part of this
8
specification). The bidders offering relays with different settings than above
shall technically justify their offer.
v)
5.15.4
a)
b)
N.B.
5.16
6.0
6.1
10 minute timer to ensure that the capacitor bank is fully discharged once it
has been switched "OFF" before it can be switched "ON" again.
COMMUNICATION COMPATIBILTY OF RELAYS
All relays shall conform to the requirements of IS:3231/IEC-60255/IEC 61000 or other
applicable standards. Relays shall be suitable for flush or semi-flush mounting on the
front with connections from the rear. All protective relays shall be in draw out or plug-in
type modular cases with proper testing facilities. Necessary test plugs/test handles
shall be supplied loose and shall be included in contractor’s scope of supply.
All main protective relays (viz over current and earth fault, Restricted Earth Fault, Over
voltage and neutral displacement) shall be numerical type and communication
protocol shall be as per IEC 61850. Further, the test levels of EMI as indicated in IEC
61850 shall be applicable to these.
For numerical relays, the scope shall include the following:
Necessary software and hardware to up/down load the data to/from the relay from/to
personal computer installed in the substation. However, the supply of PC is not
covered under this clause.
The relay shall have suitable communication facility for future connectivity to SCADA.
The relay shall be capable of supporting IEC 61850 protocol (with optical port).
The relay shall be suitable for 220 V DC auxiliary supply. The relay cover & case
shall be dust proof, water proof & vermin proof. Operating indicators shall be provided
on all protective relays/ on their immediate auxiliary units to indicate the type of fault &
phase/phases involved. It shall be possible to reset the operation indication without
opening the relay case. The routine test certificates of all protective & auxiliary relays
will be submitted along with routine test certificates of 11 kV switchgear covered by
the specification.
D.C. FAIL ALARM SCHEME:
A suitable relay for monitoring the DC supply to the 11 kV switchboard shall be
mounted on each of the 11 kV incoming instrument panel. The operation of DC fail
scheme shall be accompanied by visual (indicating lamp on the instrument panel) &
audio (ringing of hooter) annunciation. It shall be possible to silence the hooter by
pressing the `accept' push button while the lamp shall continue to glow till the fault
has been attended to & DC supply restored. A DC fail `Test' push button may be
provided to test the lamp circuit of the scheme.
TEST
All routine tests shall be carried out in accordance with IS : 13118-1991 (latest edition
thereof).
TYPE TESTS
The equipment offered should be type tested. Type test report should not be more
than seven years old, reckoned from the date of bid opening, in respect of the
following tests, carried out in accordance with ISS-13118/IEC-56, from Govt./ Govt.
approved test house, shall be submitted along with bid:
i)
Impulse with-stand voltage tests.
ii)
Power frequency voltage dry & wet tests on main circuits.
iii)
Short circuit with stand capability tests.
iv)
Mechanical endurance tests.
v)
Temperature rise test
9
However Mechanical endurance tests and Temperature rise test conducted at Firm’s
works in the presence of representative of any of the SEBs/State Power Utilities shall
also be acceptable.
The remaining type test report as per clause 6.0 of ISS-13118/IEC-56 shall be
submitted by the successful bidder with in three month from the date of placement of
Purchase Order. These type test reports will also be from Govt./ Govt. approved test
house & shall not be more than seven years old reckoned from the date of placement
of order.
Voltage transformers & current transformers shall comply with the type tests as
stipulated in the latest version of IS : 3156 & IS: 2705 respectively. The reports of all
type tests conducted shall be supplied. The 11 kV VCB & associated CTs & PTs shall
be subjected to routine tests as specified in the latest version of the relevant ISS in
the presence of purchaser's representative, if so desired by the purchaser. The
routine test certificates of bought out components such as relays, switches, indicating
instruments, KWH Meter & SEM will also be presented to HVPNL's inspecting officer
who will forward them to the purchaser alongwith his inspection report for the main
equipment. All test reports should be got approved from the purchaser before
despatch of equipment.
7.0
DRAWINGS:
In addition to any other drawing which the tenderer may like to furnish to explain the
merits of his proposal, following drawings shall be submitted with the tender in
quadruplicate :
i
Principal dimensional details of 11 kV Switchgear.
ii
General arrangement of 12 Panel 11kV switchboard including its foundation
details.
iii
Schematic drawings of control, metering & protection circuits in respect of
11kV incoming VCB, 11kV outgoing VCB including station transformer VCB &
11 kV capacitor VCB along with detailed write-up.
iv
Drawing showing height of 11 kV bus bars & arrangement of bus bars
v
Vacuum interrupter drawing.
The successful bidder shall submit final version of drawings complete in all respects in
quadruplicate within 15 days of placement of order for purchaser's approval. The
purchaser shall communicate his comments/ approval on the drawings to the supplier
within one month of their receipt. The manufacturer shall, if so required by the
purchaser, modify the drawings and resubmit the same for purchaser's approval
within two weeks of receipt of comments. Such duly revised drawings will be
approved by the purchaser within two weeks of their receipt.
After receipt of purchaser's approval to drawings, the manufacturer will submit five
sets of all approved drawings and five sets of manual of instructions to our Design
Office.
One set of all the approved drawings and manual of instructions will be
supplied along with each equipment without which the supply will not be
considered as complete supply.
10
In order to ensure timely receipt of all the drawings, literature & reproducibles etc., the
purchase section of MM organization will issue despatch instruction for despatch of
11 kV switchgear.
8.0
SPECIAL TOOLS:
The tenderer shall separately quote for a set of special tools, if so required, for erection
and maintenance of the switchgear panels.
9.0
DEVIATION FROM SPECIFICATION:
Should the tenderer wish to deviate from the provisions of the specification either on
account of manufacturing practice, or any other reasons, he shall draw attention to the
proposed point of deviation in the tender and submit such full information drawing and
specification so that merits of his proposal may be fully understood. The specification
shall be held binding unless the deviation have been fully recorded as required above.
10.0 TRAINING FACILITIES: VOID
11.0 GUARANTEED AND OTHER TECHNICAL PARTICULARS:
These particulars shall be furnished strictly as per Annexure-A. Any deviation from
this specification shall be clearly brought out separately.
11
ANNEXURE -'A'
SCHEDULE OF REQUIREMENT
VACUUM TYPE 12 PANELS, 11 kV SWITCH BOARDS AND EACH SWITCH BOARD
COMPRISING OF THE FOLLOWING:1.01.
1 NO. INCOMING PANEL EQUIPPED AS BELOW:
-1 No.
Triple pole 500 MVA, 11 kV 1250 A draw out type vacuum circuit breaker fitted with
arc control device, interlocks, auxiliary switches isolating contacts, emergency hand
trip device, mechanical `ON' & `Off' indicator and motor operated spring charged
mechanism.
-1 Set
Bus bars 3 phase 1250 A. Cable boxes located at the rear of the unit for receiving
2 set of power cables each comprising 3 no. single core 630 mm2 11 kV XLPE PVC
sheathed cables & complete in all respect with jointing kits etc. as per clause 5.9 of
the specification.
-3 No.
CTs of ratio 1800-900/0.577-5 A with first core for differential protection having a
minimum knee point voltage equal to 40 RCT (neglecting lead resistance) and the 2nd
core for REF protection having a minimum knee point voltage of 92(RCT)V on 1800 A
tap where RCT secondary winding resistance. These CTs shall conform to accuracy
class PS of ISS:2705 (Part-IV) and shall have Magnetising current as low as possible
but in no case exceeding the value corresponding to class 5 P of IS:2705 (Part-III).
-3 No.
CTs of 1800-900/5 A of 15 VA output and 5P10 accuracy for over current and earth
fault protection & Ampere meter etc.
-3 No.
CTs of 1800-900/1 A of 15 VA output, accuracy class 0.2S and ISF less than 5 for
SEM.CT secondary terminals shall be brought out in weather proof sealable terminal
box & shall be connected to SEM through TTB. Both TTBs and SEM shall be sealable
type.
-1 No.
3 phase star/star connected resin cast voltage transformer as per IS: 3156
(Part-II)1965 complete with HT & LT fuses, isolating plugs and sockets for HT & LT
copper connectors, current limiting resistances as per following specifications:Sr.No.
Core
Ratio
VA Burden
Accuracy
1.
Core-I
11000/√3/110/√3
100VA
1/3p
2.
Core-II
11000/√3/110/√3
10VA
0.2
CT Secondary terminal of metering core i.e. Core-II shall be brought out in whether
proof terminal box and shall be connected to SEM through TTB. Both TTBs and SEM
shall be sealable type.
-1 set
Vermin and dust proof fitments.
-1 NO.
INSTRUMENT PANEL MOUNTED ON TOP AND EQUIPPED AS BELOW:
-1 No.
Ammeter with selector switch as per clause: 5.13.1 of the specification.
-1 No.
Voltmeter with selector switch as per clause: 5.13.2 of the specification.
-1 No.
PF meter with TTB as per clause: 5.13.4 of the specification.
-1 Set
Triple pole combined over current and earth fault IDMTL relay as per clause: 5.15.1 of
the specification.
12
-1 Set
Over voltage relay for incomer panels only.
-1 No.
Tripping relay with hand reset contacts suitable for 220 V DC auxiliary supply.
-4 No.
Indicating lamps with fittings to indicate breaker `open', `close', `auto trip' & spring
charged as per clause 5.10 of the specification.
-1 No.
Automatic trip circuit supervision scheme as per clause 5.10 of the specification.
-1 No.
PT fuse alarm scheme as per clause 5.12 of the specification.
-1 No.
DC fail alarm scheme as per clause 5.16 of the specification.
-1 No.
Circuit breaker control handle as per clause 5.14 of the specification.
-1 No.
Alarm equipment for non-trip & trip fault annunciation as per clause 5.11.1 & 5.11.2 of
the specification.
-1 No.
Cubicle illumination lamp with door operated ON/OFF switch.
-1 No.
15 A power socket with switch.
-1 No.
Anti-condensation tubular space heater suitable for connection to 240 V AC supply
with a thermostat & a miniature circuit breaker.
-1 No.
Special Energy Meter as per specification attached (Annexure-‘C’).
1.02 5 N0. OUTGOING FEEDER PANELS EACH COMPRISING OF:
-1 No.
Triple pole 400 A, 500 MVA 11 kV circuit breaker fitted with Arc control devices,
interlock arrangement, auxiliary switches, isolating contacts, emergency hand trip
device, mechanical ON & OFF indicator & motor operated spring charged mechanism
operate at 220 V DC.
-1 Set
Bus bars 3 phase 1250 A.
-1 No.
Trifurcating main cable box for receiving 3 core XLPE PVC sheathed cable upto 400
mm2 size & complete in all respects with cable glands and jointing kits etc. as per
clause 5.9 of the specification.
-3 No.
CTs of ratio 300-150/5-5 A with first core of 15 VA output & 5P10 accuracy for O/C &
E/F protection & second core 15 VA output & accuracy class 1.0 for metering.
-1 No.
Anti-condensation tubular space heater for connection to 240V AC supply with a
thermostat & a miniature circuit breaker.
-1 Set
Vermin proof & dust proof fitments.
-1 No.
Instrument panel mounted on top & equipped as below:-
13
-1 No.
Ammeter with selector switch as per clause: 5.13.1 of specification.
-1 No.
KWH meter with TTB as per clause: 5.13.3 & 5.2 of the specification.
-1 set
Triple pole combined 2 O/C & 1 E/F IDMTL relay supplemented with triple pole
instantaneous relay (high set element) in the form of 2 O/C & 1 E/F as per clause :
5.14.2 of the specification.
-1 No.
Tripping relay with hand reset contacts suitable for 220V DC auxiliary supply.
-4 No.
Indicating lamps with fittings to indicate breaker `open', `close', `auto-trip' & 'spring
charged' as per clause 5.10 of the specification.
-1 No.
Indicating lamp with fittings & push button switch to indicate trip circuit healthy in
pre-close & post-close conditions as per clause: 5.10 of the specification.
-1 No.
Circuit breaker control handle as per clause: 5.14 of the specification.
-1 No.
Cubicle illumination lamp with door operated ON/OFF switch.
-1 No.
15 A power socket with switch.
-1 No.
Anti-condensation tubular heater suitable for connection to 240 V AC supply with a
thermostat & a miniature circuit breaker.
1.03
2 NOS. OUTGOING FEEDER PANELS:Similar to item 1.02 but with following cable box/CTs:-
-1 No.
Trifurcating main cable box for receiving 3 core XLPE, PVC sheathed cable upto 185 mm2
size and complete with cable glands and jointing kits etc. as per clause: 5.8 of the
specification.
-3 No.
CTs of ratio 200-100/5/5 A with first core of 15 VA output & class 5P10 accuracy for O/C &
E/F protection & second core of 15 VA output & accuracy class 1.0 for metering.
1.04
1 NO. OUTGOING FEEDER PANELS:
Similar to item 1.02 but with the following cable box/CTs: -
-1 No.
Trifurcating main cable box for receiving 3 core XLPE, PVC sheathed cable upto 400 mm2
size and complete with cable glands and jointing kits etc. as per clause: 5.8 of the
specification.
-3 No.
CTs of ratio 400-200/5/5 A with first core of 15 VA output & class 5P10 accuracy for O/C &
E/F protection & second core of 15 VA output & accuracy class 1.0 for metering.
1.05
1 NO. PANEL FOR CAPACITOR BANK:
The capacitor controlling breaker should be suitable to meet all conditions required for
capacitor operation & should be suitable for controlling capacitive current upto 800A at
11 kV which is equivalent to 15 MVAR approx. & equipped similar to item No. 1.02
except KWH meter but with the following changes/additions:
14
-3 No.
CTs of ratio 800-400/5A output & 5P10 accuracy for over current & earth fault
protection.
-
Protection scheme including closing circuit interlock timer shall be as per clause: 5.15.3
of the specification.
1.06
1 NO. STATION TRANSFORMER FEEDER PANEL:
Similar to item No. 1.02 but with the following cable box & CTs:-
-1 No.
Trifurcating main cable box for receiving 3 core XLPE cable upto 50 mm2 size &
complete in all respect as per clause: 5.8 of the specification.
-3 No. CTs of ratio 60-30/5-5 A with first core of 15 VA output & class 5P10 accuracy
for O/C & E/F protection & second core of 15 VA output & accuracy class 1.0 for
metering.
1.07
1 No. INCOMING PANEL EQUIPPED EXACTLY IDENTICAL TO ITEM 1.01 DETAILED
ABOVE
NOTE:
The two incoming panels at Sr. No. 1.01 & 1.06 shall be placed at the two extreme
ends of the switch board. Provision shall be made to split the 10 panels boards into two
parts each having an incoming panel at its end with complete non-trip alarm, trip alarm
& protection schemes.
2.
11 kV INCOMING & OUTGOING FEEDER VCBs.
2.1
11 kV incoming VCBs equipped exactly identical to the item 1.01 detailed above.
2.2
11 kV outgoing VCBs equipped identical to either 1.02 or 1.03 detailed above. The
precise split up will be intimated to the successful bidder.
NOTE :
These incoming & outgoing panels' bus orientation, physical dimension and auxiliary
wiring etc. shall be such that these can be connected with the already installed/running
11 kV switchgear.
15
ANNEXURE-'B'
SCHEDULE OF GUARANTEED AND OTHER TECHNICAL PARTICULARS
1.
Maker's name & country of manufacturer.
2.
Type
3.
Nominal system voltage
4.
Highest system voltage
5.
Frequency
6.
Normal current ratings
a)
As ref. ambient temp.
as per relevant standard.
b)
At site conditions.
7.
Symmetrical breaking capacity.
8.
Asymmetrical breaking capacity
9.
a)
b)
10.
Making capacity.
11.
1.2/50 Micro second impulse wave withstand test voltage.
12.
One minute power frequency withstand test voltage.
13.
No. of poles
14.
No. of breaks in circuit per pole.
15.
Length of break per phase.
16.
Opening time
17.
Making time
18.
Arc duration
19.
a)
b)
20.
21.
Type of arcing contacts and/or arc control device.
a)
Whether the circuit breaker is trip free ?
b)
Whether it is with lock out preventing closing?
Symmetrical breaking current
Short time current rating for 1 sec.
Type and material and main contacts
Material & thickness of plating of contacts.
16
22.
Nominal voltage of closing mechanism.
23.
Power required to close circuit breaker at nominal voltage.
24.
Minimum clearance in air
a)
Between phases.
b)
Between the live parts and earth
25.
Minimum clearance in vacuum
a)
Between phases
b)
Between live parts & earth
26.
Total weight of complete breaker
27
Dimensions and mounting details
28.
Standard to which conforms
29.
Details of reference drawings attached.
B.
INSTRUMENT TRANSFORMERS:
i)
CURRENT TRANSFORMERS :
a)
Name of manufacturer.
b)
Rated primary current
c)
Rated secondary current
d)
Rated transformation ratio
e)
V.A. oputput at rated current & accuracy
f)
Class of accuracy.
g)
Rated over current factor with time in seconds.
h)
Type of CTs(whether wound or bar type)
i)
One minute power frequency withstand test voltage.
j)
1.2/50 micro second impulse withstand voltage.
k)
Standard to which conform.
ii)
VOLTAGE TRANSFORMER :
(i)
Name of manufacturer.
(ii)
Rated primary voltage
(iii)
Rated secondary voltage
(iv)
Rated burden
17
(v)
Class of accuracy
(vi)
Rated voltage factor and time
(vii)
One minute power frequency withstand test voltage.
(viii)
1.2/50 micro second impulse withstand test voltage.
(ix)
Standard to which conform.
C.
RELAYS :
(i)
Name of manufacturer.
(ii)
Type & make
(iii)
Setting range
(iv)
Other details
(v)
Standard to which conform
D.
BUS BAR
1.
Material
2.
Normal current rating
3.
Nominal area per phase
4.
Shape.
5.
Type of insulation.
E.
VACUUM INTERRUPTER BOTTLE
1.
Name of manufacturer.
2.
Whether imported or indigenous.
3.
Manufacturer's type, normal Amps. &
rupturing capacity for vacuum bottles
used on incoming panel.
4.
Manufacturer's type, normal Amp. &
rupturing capacity for vacuum bottles
used on outgoing panel.
5.
Manufacturer's type,. normal Amps.
& rupturing capacity for vacuum bottles
used on capacitor control panel.
6.
Degree of vacuum inside the vacuum interruptors.
18
7.
Short time rating of vacuum bottles.
8.
Number of full short circuit operation,
as per test duty 1 to 5 of IEC-56 which
the vacuum bottles offered can safely withstand.
9.
Whether the vacuum bottles used on
incoming and outgoing panels are same
or different.
10.
Whether the operating mechanism is
imported or indigenous.
(SIGNATURE OF SUPPLIER)
19
Annexure-‘C’
HARYANA VIDYUT PRASARAN NIGAM LTD.
TECHNICAL SPECIFICATIONS
FOR
INTERUTILITY METERING SYSTEM AND
COMMON METER READING INSTRUMENT
(CMRI)
SPEC. NO. HPD/S-82/HPM-461/Vol-II/PROT. (Jan-2013)
Chief Engineer/MM
Design Directorate, HVPNL,
Shakti Bhawan, Sec-6,
Panchkula-134109 (HARYANA).
Tel/Fax No. 0172-2583724
Email:- cemm@hvpn.gov.in
sedesign@hvpn.gov.in
20
TECHNICAL SPECIFICATION FOR INTERUTILITY METERING SYSTEM
1.0
The specification covers the design, manufacturing, testing, inspection, delivery of
interutility metering system and /or common meter reading instrument (CMRI).
2.0
The energy meters specified herein shall be used for tariff metering for bulk, Inter -utility
power flows in HVPNL/DISCOM. The meters shall be installed on each circuit as a self
contained device for measurement of active energy & reactive energy in each successive
15-minute block and certain other functions as described in the following paragraphs.
3.0
The meters shall be suitable for being connected through Test terminal blocks to the
voltage transformer having a rated secondary line to line voltage of 110 V, and to current
transformers having a rated secondary current of 1 A. Any further transformer/transducers
required for their functioning shall be in built in the meters. Necessary isolation and / or
suppression shall also be built in for protecting the meters from surges and voltage spikes
that occur in the VT/CT circuits of the switchyards. The reference frequency shall be 50Hz.
4.0
The microprocessor based 3 phase 4 wire meters shall conform to class 0.2S as per IS
14697 for Indian manufacturers or IEC- 62053-22 (2003) for foreign manufacturers &
technical specification and meter shall be stand alone type. The meters shall bear BIS
certification mark, if required as per Govt. of India Gazette notification. It will be the
responsibility of the bidder to get these meters marked with BIS certification. The BIS
certification shall be supplied with the tender.
5.0
Meters shall be supplied with associated TTBs. The Meters shall have following features: -
a)
Meter shall be stand alone type.
b)
For transfer of data, system should have multiple communication ports as described in the
following paragraphs
6.0
The active energy measurement (Wh) shall be carried out on 3 phase 4 wire principle with
an accuracy as per class 0.2S of IS 14697/IEC- 62053- 22 (2003) In the meters the energy
shall be computed directly in CT/VT secondary quantities and indicated in Watt-hours. The
meters shall compute the net active energy (Wh) sent out from the Sub-Station during each
successive 15 minute block, and store in its memory along with +/- sign. It shall also display
on demand the net WH sent out during the previous 15 minute block, with a minus sign if it
is a net Wh receipt.
7.0
Further, the meter shall continuously integrate and display on demand the net
cumulative active energy sent out from the Sub-Station upto that time. The
cumulative Wh reading at each midnight shall be stored in the meter’s memory. The
register shall move backwards when active power flows backwards into the Sub-Station.
8.0
The meter shall count the number of cycles in VT output during each successive 15-minute
block and divide the same by 900 to arrive at the average frequency. This shall be stored in
the meter's memory as a 2-digit code, which shall be arrived at by subtracting 49 from the
average frequency, multiplying by 50 and neglecting all decimals. For e.g. 49.89 Hz shall be
recorded as 44. In case the average frequency is less than 49.0 Hz, it shall be recorded as
00. In case it is 51.0 Hz or higher, it shall be recorded as 99. The average frequency of the
21
previous 15-minutes block shall also be displayed on demand in Hertz. The accuracy of the
voltage measurement/computation shall be at-least 0.5%, a better accuracy such as 0.2%
in the 95-105% range being desirable.
9.0
The meters shall continuously compute the average of the RMS value (fundamental only) of
the three lines to neutral VT secondary voltage as a percentage of 63.51 V and display the
same on demand.
10.0
The meter shall also compute the reactive power (VAR) on 3 phase 4 wire principle. Limits
of error shall be corresponding to class 1.0 as per IS 14697 for reactive energy for Indian
manufacturers or half (50%) of those permitted corresponding to class 2.0 for reactive
energy as per IEC 62053-23 (2003) for foreign manufacturers, and integrate the reactive
energy (VARh) algebraically in 2 separate registers, one for the period for which the
average RMS voltage is 103% or higher and the other for the period for which the average
RMS voltage is below 97%. The current reactive power (VAR) with a minus sign if negative,
and cumulative reactive energy (VARh) reading of the 2 registers shall be displayed on
demand. The readings of the 2 registers at each midnight shall also be stored in the meter's
memory. In the meter, the reactive power and reactive energy transmittals shall be
computed in VAR/VARh directly calculated in VT and CT secondary quantities. When
lagging reactive power is being sent out from the Sub-Station. VAR display shall have no
sign and VARh registers shall move forward. When reactive power flow is in the reverse
direction. VAR display shall have a negative sign and VARh registers shall move
backwards.
11.0
The meter shall fully comply with all the stipulations of IS 14697/IEC- 60687-2000 (or latest
revision) for class 0.2S for static watt-hour meters except those specifically modified by this
specification. The reference ambient temperature shall be 50 deg. C.
12.0
Error shall be as per IS-14697/ IEC- 62053- 22 (2003) for all power factor angles from 0
deg. to 360 deg.
13.0
Each meter shall have a test output device (visual) for checking the accuracy of active
energy Wh and reactive energy (VARh) measurement using a suitable test equipment. The
test output shall be software configurable for active energy import/export and reactive
energy import/export.
14.0
No rounding off to the next higher last decimal shall be done for voltage and frequency
displays.
15.0
There shall be provisions of below mentioned Tempers and Events in the Interutility Meters
of 0.2S accuracy class:-
15.1
Tempers:-
1)
2)
3)
4)
Current Reversal/Current Failure/Current Unbalance/Current bypass.
Magnetic Tempering.
Under voltage/Voltage unbalance.
Abnormally Low PF 0.45 (lag or lead) of any of the phases indicative of phase sequence
mismatch in 3-phases.
Power on/off.
5)
22
15.2
Events:-
1)
Over Voltage:- If any of the phase voltage is more than 110% of rated voltage & it is
continuing for more than 15 minutes, meter records over voltage as an event.
2)
Under Voltage:- The three line to neutral voltages shall be continuously monitored by
individual phase wise LED's, and in case any of these falls below 70%, the normally
flashing lamp provided on the meters front becomes steady. The time blocks in which such
a voltage failure occurs/persist shall also be recorded in the meter's memory. The lamp
shall automatically resume flashing when corresponding VT secondary voltage is healthy
again. LCD indication are also acceptable. The two VARh registers specified in clause-10
shall remain stay-put while VT supply is unhealthy. This feature shall be recorded as an
event.
16.0
The meters shall operate with the power drawn from the VT secondary circuits, without the
need for any auxiliary power supply. The total burden imposed by a meter for measurement
and operation shall not exceed 10 VA on any of the phases.
An automatic backup for the continued operation of the meter's calendar clock shall be
provided through a long life battery, which shall be capable of supplying the required power
for atleast two years. The meters shall be supplied duly fitted with the battery which shall
not require to be changed for atleast 10 years, as long as total VT supply interruption does
not exceed two years. The battery mounting shall be designed to facilitate easy battery
replacement without affecting PCB of meter.
17.0
Each meter shall have a built-in calendar and clock, having an accuracy of 30 seconds per
month or better. The calendar and clock shall be correctly set at the manufacturer's works.
The date (day-month-year) and time (hour-minute-second) shall be displayed on the meter
front on demand. Clock adjustment shall be possible at site using the Meter Reading
Instrument (MRI) or remotely using time synchronization signal through RS 485. For the
purpose of getting the standard time, the computer (s) from where the meter will be read
shall be equipped with GPS signal receiver. This computer and the GPS receiver, however,
are not in the scope of this specification. When an advance or retard command is given, six
subsequent time blocks shall be contracted or elongated by 10 seconds each. The meter
shall not accept another clock correction command for seven days. The meter time shall
automatically be corrected every time the remote computer interrogates it. All clock
corrections shall be registered in the meter's memory and shall be suitably shown on the
print out of the collected data
18.0
Each meter shall have a unique identification code, which shall be marked permanently on
the front as well as in its memory. All meters supplied to HVPN, as per this specification
shall have their identification code starting with HVPN, which shall not be used for any other
supply. HVPN shall be followed by a dash and a four digit running serial number. The series
of four digit running serial no. indicating the unique identification code of each meter shall
be provided by HVPN to the successful bidder.
19.0
The measured value(s) shall be displayed through LED/back-lit LCD display with proper
identification for indication of the following (one at a time) on demand.
19.1
19.2
19.3
19.4
19.5
Meter Serial No.
Date (dd-mm-yy)
Time (hr-min-sec)
Cumulative Wh reading
Average frequency of the previous 15-minute block
'd'
't'
'c'
'F'
23
19.6
19.7
19.8
19.9
19.10
19.11
20.0
21.(A)
21.1
21.2
21.3
21.4
21.5
21.6
21.(B)
Net Wh transmittal in the previous 15-minute block, with +/- sign
Average percentage voltage
Reactive power (VAR) with +/- sign
Voltage high VARh register reading
Voltage-Low VARh register reading
Low Battery Indication
'E'
'U'
'r'
'H'
'L'
A keypad or scrolling facility shall be provided on the front of the meter for switching on the
display of the meter parameters selected and for changing from one indication to next.
Meter shall have a non-volatile memory in which the following shall be automatically stored.
Average frequency for each successive 15-minute block upto second decimal/as a two-digit
code.
Net Wh transmittal during each successive 15-minute block upto second decimal/with plus
minus sign.
Cumulative Wh transmittal at each midnight in 6 digits including one decimal.
Cumulative VARh transmittal for voltage high condition, at each midnight in 6 digit including
one decimal.
Cumulative VARh transmittal for voltage low condition, at each midnight in 6 digit including
one decimal.
Date & time blocks of failure of VT supply on any phase, as a star (*) mark.
Battery backed memory shall not be accepted.
22.0
The meter shall store all the above listed data in their memories for a period of
days. The data older than 35 days shall get erased automatically.
23.0
CMRI/DCD: To ensure inter operability of system at the meter reading instrument end, the
common meter reading instrument (CMRI) or data collection devices (DCD) confirming to
DOS platform and having min. 16 MB memory shall be used to enable different
manufacturers to download into same hand held terminal & the meters of various makes to
be read through the same hand held terminal. Each CMRI shall be complete with:-
i)
ii)
iii)
iv)
v)
35
a lead with optical head for coupling it to the meter,
a lead for plugging it to a personal computer;
an internal battery for powering the devices;
a case for safely carrying it about
a battery charger
The total arrangement shall be such that one (1) operation can carry out the whole
operation, in about five (5) minutes per meter.
Portable Meter Reading Instruments (MRI)/data collection devices (DCD) shall have a key
for starting the data tapping from the coupled meter’s memory, a key to start data transfer
to the PC, and a lamp, which would light up on completion of data collection, remain ‘on’
while the data is held in the device and would go ‘off’ when all data has been transferred to
the PC. Data tapping operation from CMRI/DCD shall not erase the data from the meter’s
memory, or effect the meter operation in any way. The memory of the CMRI/DCD shall get
automatically cleared when the data has been transferred to the PC only then the
CMRI/DCD shall accept data from another meter. CMRI/DCDs shall also have necessary
provision for meter clock correction. CMRI/ DCDs shall be compatible with earlier supplied
meters in regard to data downloading etc.
24
23.1
Each meter shall have an optical communication port compatible to RS 232 on its front for
tapping all data stored in its memory. In addition to the above each meter shall be provided
with a RS485 port on one of its sides, from where all the data stored in the meter’s memory
can also be tapped. Portable Meter Reading Instruments (MRI)/data collection devices
(DCD) of SANDS, ANALOGIC make have already been provided separately for this
purpose, one for each Sub-Station, to serve as interface between the meters specified
above and the local PC. Meter shall be compatible with earlier supplied CMRI/DCD. Each
meter shall be provided with a lead having optical head for coupling the meter to
CMRI/DCD.
23.2
Software Package: The existing metering system records all the parameters required for
the Availability Based Tariff. Suitable software for CMRI shall be provided by the bidder for
smooth downloading of the data to/ from the CMRI. For data analysis & billing, the different
meter manufacturers shall provide the meter reading software to interpret the data collected
through CMRI or through RS485 for conversion into a common ASCII format. The Data of
the existing meters is available in the specified ASCII Format; details of which are enclosed
at Annexure-II (Page1 to 3). A similar output in the same ASCII format (space delimited,
fixed length values) shall be made available from the new meters by the successful bidder
for future use of data for generation of BST & ABT Bills/Reports or any other purpose. In
addition to this successful bidder shall make provision to supply load survey data in Excel
format as per Annexure-III.The supplier shall provide above software which would enable a
local PC to:-
i)
accept the data from the CMRI and/or from a interface device connected to the optical
port/RS-485 port and store it in it’s memory in binary read only format.
Polling feature along with a task scheduler to run the data downloading software at a predesignated date and time repeatedly or by manually selecting a meter. A detailed activity
log shall also be available for each downloading operation.
Display the collected data on PC’s screen on demand as per annexure-II & III in text format,
with forward/backward rolling.
Print out in text format the data collected from one or more meters as per annexure-II & III,
starting from a certain date and time, as per operator’s instructions.
Transmit the collected data, in binary format, through an appropriate communication link to
the central computer, starting from a certain date and time, as per operator’s instructions.
Store the collected data, in binary format, on a floppy disc/CD/Pen drive/DVD.
ii)
iii)
iv)
v)
vi)
The above software shall further ensure that absolutely no tampering (except total erasures)
of the collected metering data is possible during its handling by the PC. The software shall
be suitable for the commonly available PCs and shall be supplied to owner in a compatible
form to enable its easy loading into the PC’s available at the various Sub-Stations/Energy
Accounting Centre.
23.3
The overall intention is to tap the data stored in the meter memory at any time from any of
the two ports mentioned above and transmit same to a remote centre computer using
communication links, through the local PC. It should also be possible to obtain a print out
(hard copy) of all data collected from the meters, using the PC. The received/
downloaded meter data should be the original output from the meter.
23.4
As a part of commissioning the Contractor shall load the software in the PCs at the
respective substations, and fully commission the total meter reading scheme. He shall also
impart the necessary instructions to substation engineers.
25
24.0
The whole system shall be such as to provide a print out (both from the local PC and the
remote central computer) of the following form:
23
HVPNL
01
55
55
****
57
52
+16.28
+14.93
12345.6
+14.72
+13.34
56
55
56
51
+15.95
+14.26
01234.5
+13.83
+12.76
55
54
55
52
+15.32
+14.85
00123.4
+13.57
+14.11
54
56
53
52
+15.66
+15.17
99-04-28
+12.91
+15.28
25.0
All the meters shall be identical in all respects except for their unique identification codes.
They shall also be totally sealed and tamper proof, with no possibility of adjustment at site
except for a restricted clock correction.
26.0
The meter shall safely withstand the usual fluctuations arising during faults in particular, VT
secondary voltage 115% of rated applied continuously and 190% of rated for 3 seconds
and CT secondary current 150% of rated applied continuously and 30 times of rated applied
for 0.5 seconds, shall not cause any damage to or the mal-operation of the meters.
27.0
The meter shall continue to function for remaining healthy phase(s), in case of failure of one
or two phases of VT supply. In case of a complete VT supply failure, the computation of
average frequency (as per 8.0) shall be done only for the period during which the VT supply
was available in the 15-minute block. Any time block contraction or elongation for clock
correction shall also be duly accounted for.
28.0
The harmonics shall be filtered out while measuring the Wh, VAR and VARh and only
fundamental frequency quantities shall be measured or computed.
29.0
VOID
30.0
VOID
31.0
Every meter shall be indelibly marked with connection diagram showing the phase
sequence for which it is intended and shall be attached on the meters. In case of any
special precautions need to be taken at the time of testing the meter, the same shall be
indicated alongwith the circuit diagram.
32.0
VOID
33.0
Sealing arrangement: Sealing arrangement for meters and TTBs shall be provided as
under:
33.1
TTBs: Each TTB shall have the provision for two seals.
33.2
Meters: Meter body or cover & meter terminal blocks shall be sealable including each optical
communication port.
34.0
The meters shall be supplied housed in compact and sturdy; metallic or moulded cases of
non-rusting construction and/or finish. The cases shall be designed for simple mounting on
a plane, vertical surface such as a control/relay panel front. All terminals for CT and VT
connections shall be arranged in a row along the meter’s lowerside. Terminals shall have a
suitable construction with barriers and cover, to provide a secure and safe connection of
CTs and VTs leads through stranded copper conductors of 4.0 sq. mm. size.
26
The meters shall also withstand without any damage or maloperation reasonable
mechanical shocks, earthquake forces, ambient temperature variations, relative humidity
etc. They shall have an IP-51 category dust-tight construction, and shall be capable of
satisfactory operation in an indoor, non-air conditioned installation.
The contractor shall be responsible for total installation and commissioning of the meters
(alongwith test blocks, if supplied separately)as per Owner’s advice, including unpacking
and inspection on receipt at site, mounting the meters on existing control and relay panels
at an appropriate viewing height., connection of CT and VT circuits including any required
rewiring (however, supply & installation of 4cx4mm2 control cables (laid through 2.5’ dia
HDD PVC Pipe) from CT, VT to metering system are not in the scope of this specification),
functional testing, commissioning and handing over. The Contractor’s personnel shall
procure/carry the necessary tools, equipment, materials and consumables (including
insulated wires, lugs, ferrules, hardware etc.).
35.0
Inspection & Testing:
35.1
Type Tests:
The meter should be fully type tested as per IS 14697 for Indian Manufacturers or IEC62053-22 (2003) & IEC-62053-23 (2003) for foreign manufacturers.
35.2
Routine Tests:
All Routine tests as per IS 14697 shall be carried out by the supplier on the meters for
compliance in both directions of power flow.
35.3
Acceptance Tests:
All equipment, after final assembly and before despatch from manufacturer's works shall be
duly tested as per IS 14697 for compliance in both directions of power flow in presence of
purchaser's representative, unless dispensed with in writing by the purchaser. In addition,
the following acceptance tests shall also be conducted:1. Functional checks for display and memory.
2. Accuracy of voltage and frequency measurement.
All DCDs/MRIs after final assembly and before dispatch from Manufacturer’s works shall be
duly tested to verify that they are suitable for supply to the purchaser. In particular, each
and every DCD/MRI shall be subjected to the following acceptance test:1. Functional checks
2. Downloading Meter Data from the Meter(s).
3. Compatibility with PC software
4. Downloading the meter data on PC
5. Functioning of advance and retard time commands.
6. Per meter downloading time verification
7. Capacity of DCD/MRI for data storage.
36.0
Quality Assurance
27
The quality control procedure to be adopted during installation of the specified equipment
shall be mutually discussed and finalized in due course, generally based on the
established and proven practices.
37.0
Any meter, which fails to fully comply with the specification requirements, shall be liable to
be rejected by the purchaser.
38.0
VOID
39.0
Following
offers.:
39.1.1
The prospective bidder shall be required to submit complete type test reports from Govt.
approved laboratory alongwith bid. The type test reports shall not be more than seven
years old reckoned from the date of opening of part-1 tender.
39.2
Guaranteed Technical Particulars as per Annexure-I.
40.0
SERVICE CONDITIONS
technical
information
shall
be
furnished
by
the
bidders
in
their
Equipment to be supplied against this specification shall be suitable for satisfactory
continuous operation under the following tropical conditions:i.
Location
IN THE STATE OF HARYANA
ii. Max. ambient air temp (0C)
50
iii. Min. ambient air temp (0C)
-2.5
iv. Maximum Relative humidity (%)
100
v. Minimum Relative humidity (%)
26
vi. Average annual rainfall (mm)
900
vii. Max. wind pressure (Kg/sq.m.)
195
viii. Max. altitude above mean sea level 1000
(meters)
ix. Isoceraunic level (days/year)
50
x. Seismic level (horizontal acceleration)
0.3g
Note: Moderately hot and humid tropical climate conducive to rust and fungus growth. The climatic
conditions are also prone to wide variations in ambient conditions. Smoke is also present in
the atmosphere. Heavy lightening also occur during June to October.
28
Annexure-I
GUARANTEED TECHNICAL PARTICULARS FOR THREE-PHASE FOUR WIRE CLASS 0.2S
ACCURACY POWER MONITORING SYSTEM.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
Maker’s name and country
Type of Meter/Model
Standards to which the meter conform
Accuracy class
Parameters measured
P.F. Range
Overload capacity
Variation of voltage at which system function normally
Minimum starting current
MD reset provisions
Reset count
No. of digits of display
Particulars of readout by CMRI
Non volatile memory retention time in absence of power
Memory capacity (kb)
Demand integration period
Pulse output for each meters
Metrology indicator for each meters
Communication capability on
a. Local port
b. Remote port
Load survey parameters
Power Consumption per phase
i) Voltage circuit.
ii) Current circuit.
Self diagnostics features, if any (Provide details)
Principle of operation (Provide details)
Foreseen dimensions of proposed meter.
Expected weight of proposed meter
Foreseen dimensions of DCD/MRI.
Expected weight of DCD/MRI.
Dimensions and weight of the test block, if supplied
separately.
29
Annexure-II
Standard Format for Meter Readings, Energy data
First Row/*-- Header Information : Starting date & time and End date & time is defined
First row
Starting time 4 character (11th character to 14th character).
Starting date 8 character (23rd Character to 30th Character),
Ending time 4 character (35th Character to 38th Character),
Ending date 8 character (47th Character to 54th Character)
RTC Synchronization Status Indicator 1 Character (56th Character): 1 indicates RTC synchronized, 0
indicates RTC not synchronized.
Second Row:
Meter Sr. No 10 Characters (1st to 10th Character),
Mid Night Net Wh 7 Character (15th Character to 21st Character),
Reactive High Energy 7 Characters (26th Character to 32nd Character),
Reactive Low Energy 7 Characters (37th Character to 43rd Character),
Data Date 8 Characters (48th Character to 55th Character)
Third Row is Blank
Fourth row: 16 IP data in each row
Starting Hour 02 Characters (1st , II nd Character),
Avg. Freq 2 Characters (5th, 6th character),
Status Indication 3 character (7th Character to 9th character),
Net Energy 6 Character (10th to 15th Character)
2 Character left blank and all the data will be repeated 16 times
Fifth Row : Same as 4th Row
Sixth Row : Same as 4th Row
Seventh Row : Same as 4th Row
Eighth Row : Same as 4th Row
Ninth row:
Same as 4th row and at the end net energy of 24 hours at 215th Character (4 Character)
30
Lines will be repeated from 2nd line onwards as above.
/*-- Header Information
One Block At the beginning of each day in Following Format:
Meter SerialNo MidNight Net Wh Reactive High Energy Reactive Low Energy Date
16 IP data in each row and total 6 rows for complete 24 hours data
Format for IP wise information:
StartingHour AvgFreq StatusIndication NetEnergy AvgFreq StatusIndication NetEnergy ...
StatusIndication gives following Information:
* to indicate Supply Down.Supply failure might be momentary or might have lasted for several IPs
rr to indicate time retard "aa" to indicate time advance
Sum of net energies(for 96 IP) at the end of last row of the day having complete 24 hours data
--*/
31
WEEK FROM 0000 HRS OF 28-06-05 TO 1224 HRS OF 01-08-05 0
AP-M038-75
95736.5
02793.0
05701.7
28-06-05
00 18 +22.48 03 +22.19 11 +22.38 08 +22.44 11 +22.57 10 +23.03 14 +23.11 14 +23.23 22 +23.28 28 +23.29 35 +23.45 41 +23.48 44 +23.66 44 +23.68 45 +23.54 52 +23.54
04 46 +23.63 48 +23.99 42 +24.35 26 +24.75 44 +25.84 48 +26.40 46 +26.52 56 +23.32 69 +22.85 61 +21.83 55 +21.24 60 +24.44 65 +23.36 61 +20.22 60 +19.19 62 +18.72
08 64 +18.50 62 +18.51 63 +17.60 67 +15.19 63 +14.62 59 +15.63 59 +16.02 52 +16.65 39 +16.46 43 +15.18 64 +15.14 65 +15.29 52 +14.87 49 +13.21 50 +13.79 51 +15.19
12 48 +17.31 38 +18.39 43 +18.12 27 +18.23 54 +14.67 51 +16.20 56 * +03.30 51 * +00.03 47 +00.06 49 +00.03 25 +05.45 20 +10.40 29 * +04.08 30 * +04.11 18 +10.35 28 +10.45
16 65 +10.68 55 +07.22 59 +04.76 62 +04.43 65 +04.19 00 * +10.48 59 +20.77 60 +23.64 70 +21.06 65 +15.04 68 +13.45 56 +14.38 47 +15.50 40 +17.67 51 +22.55 25 +25.24
20 12 +27.56 19 +29.27 10 +29.96 13 +29.97 22 +29.61 09 +28.68 22 +27.72 18 +27.22 09 +26.55 12 +25.47 30 +25.02 23 +22.52 13 +24.89 13 +24.46 26 +24.59 04 +23.77 1801.35
AP-M038-75
97537.9
02804.6
06093.8
29-06-05
00 09 +23.64 11 +23.53 12 +23.35 07 +23.11 18 +23.20 29 +23.54 34 +23.76 38 +23.87 35 +23.97 31 +23.85 43 +23.90 51 +23.95 52 +24.10 55 +24.10 49 +23.95 59 +24.24
04 66 +24.77 57 +25.14 51 +25.75 45 +26.42 60 +27.94 63 +28.62 62 +28.75 56 +27.99 77 +23.31 78 +19.45 74 +19.25 67 +18.95 65 +13.97 72 +12.92 72 +13.11 74 +13.07
08 76 +13.07 70 +12.96 64 +12.97 66 +12.96 55 +12.81 49 +16.12 48 +16.78 48 +16.90 52 +17.72 51 +20.22 43 +17.60 51 +19.78 52 +21.48 57 +23.23 47 +26.32 35 +27.02
12 49 +27.45 42 +27.04 43 +27.03 45 +27.30 56 +27.72 54 +26.70 52 +26.24 51 +26.67 51 +26.93 41 +26.91 45 +25.73 44 +26.27 50 +26.58 40 +26.25 47 +26.17 57 +26.55
16 68 +26.87 52 +25.64 54 +23.94 47 +26.32 62 +17.90 59 +06.48 58 +13.01 65 +14.96 75 +17.25 70 +16.96 66 +17.82 64 +17.42 63 +19.26 51 +20.20 49 +23.48 54 +25.23
20 25 +28.96 08 +30.16 10 +30.31 05 +30.44 10 +28.50 28 +28.42 25 +28.15 16 +27.31 13 +26.43 22 +26.01 29 +25.47 21 +24.75 35 +25.16 30 +25.57 43 +25.50 48 +25.30 2194.13
AP-M038-75
99732.0
02849.2
06724.7
30-06-05
00 52 +25.10 58 +24.99 56 +24.70 60 +24.79 48 +24.66 62 +24.83 62 +24.75 60 +24.81 60 +24.72 62 +24.62 61 +24.48 67 +24.50 65 +24.46 56 +24.18 58 +24.26 51 +24.19
04 57 +24.28 66 +24.81 60 +25.25 45 +25.77 49 +26.19 53 +26.65 49 +26.50 45 +25.73 69 +22.24 61 +19.69 48 +18.96 47 +18.55 58 +14.72 58 +12.39 61 +12.53 55 +12.66
08 49 +12.34 42 +12.47 49 +12.53 56 +12.61 53 +12.52 47 +12.65 43 +12.54 51 +11.71 39 +11.96 52 +12.11 41 +12.16 33 +12.09 32 +16.05 27 +17.90 19 +18.12 13 +18.39
12 01 +18.48 00 +16.06 00 +15.48 03 +15.57 15 +15.67 29 +18.41 00 +25.66 14 +24.74 61 +24.23 43 +24.59 01 +24.20 20 +24.24 40 +24.17 48 +23.44 47 +23.43 26 +22.54
16 28 +22.65 28 +22.79 36 +22.97 23 +22.46 18 * +21.03 56 +20.23 24 +20.50 30 +20.20 59 +18.13 61 +19.79 63 +22.28 47 +22.83 52 +19.63 32 +21.87 11 +24.40 00 +25.80
20 00 +30.53 01 +12.91 12 +00.04 00 +10.45 03 +30.33 00 +31.96 10 +30.78 51 +19.79 33 +24.10 13 +27.75 19 +26.72 13 +24.58 38 +26.18 19 +25.82 30 +25.66 41 +25.66 2010.84
AP-M038-75
01742.8
02932.1
06980.9
01-07-05
00 22 +25.35 16 +25.54 31 +25.56 25 +25.25 35 +25.44 27 +25.58 29 +25.44 35 +25.39 47 +25.45 55 +25.59 55 +25.69 53 +21.36 56 +20.34 48 +20.40 49 +20.32 45 +20.37
04 47 +20.63 37 +20.84 35 +21.15 27 +24.36 45 +28.17 47 +28.38 50 +28.29 47 +26.74 56 +21.27 44 +18.48 36 +19.28 42 +19.34 55 +16.68 51 +13.75 50 +13.67 51 +13.61
08 62 +13.56 61 +13.63 51 +13.60 56 +13.60 31 +13.62 41 +13.85 46 +13.93 48 +13.72 42 +13.86 16 +13.71 18 +13.70 15 +13.48 00 +15.30 09 +23.83 02 +26.60 05 +26.94
12 22 +28.59 17 +28.81 34 +30.73 15 +30.76 28 +30.88 16 +30.26 00 +29.53 09 +30.21 06 +30.50 01 +22.38 06 +22.74 08 +23.04 16 +23.66 13 +23.41 07 +23.06 03 * +22.03
16 23 * +14.38 37 +16.67 39 +16.94 38 +07.42 63 +14.18 49 +16.78 36 +17.89 44 +17.89 60 +19.38 56 +23.89 34 +21.55 26 +21.29 07 +15.15 00 +11.78 00 +00.02 00 +02.29
20 00 +22.83 00 +25.15 05 +24.43 00 +29.69 00 +32.39 16 +29.05 06 +14.03 00 +03.92 00 +21.73 04 +27.26 05 +27.31 00 +26.67 00 +27.61 00 +22.95 14 +26.95 24 +27.10 2031.80
AP-M038-75 03774.7 03035.5 07267.9 02-07-05
32
Annexure – III
/* Header
Information */
Meter Serial No.
Load Survey Data From: 26/02/2010 To:
01/04/2010
Date
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
Time
Slot
0:15
0:30
0:45
1:00
1:15
1:30
1:45
2:00
2:15
2:30
2:45
3:00
3:15
3:30
3:45
4:00
4:15
4:30
4:45
5:00
5:15
5:30
5:45
6:00
6:15
6:30
6:45
7:00
7:15
7:30
7:45
8:00
8:15
8:30
8:45
9:00
9:15
9:30
9:45
10:00
10:15
10:30
10:45
Coded
Frequency
49
23
Net
Wh
Time
Retard/Advance
15.78
9.64
aa
rr
PT Status
Indicator (for low
voltage indication)
*
*
33
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
2/26/2010
11:00
11:15
11:30
11:45
12:00
12:15
12:30
12:45
13:00
13:15
13:30
13:45
14:00
14:15
14:30
14:45
15:00
15:15
15:30
15:45
16:00
16:15
16:30
16:45
17:00
17:15
17:30
17:45
18:00
18:15
18:30
18:45
19:00
19:15
19:30
19:45
20:00
20:15
20:30
20:45
21:00
21:15
21:30
21:45
22:00
22:15
22:30
22:45
23:00
23:15
23:30
23:45
0:00
34
Total
Date
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
2/27/2010
Time
Slot
Coded
Frequency
Net
Wh
Time
Retard/Advance
PT Status
Indicator (for low
voltage indication)
0:15
0:30
0:45
1:00
1:15
1:30
1:45
2:00
2:15
2:30
2:45
3:00
3:15
3:30
3:45
4:00
4:15
4:30
4:45
5:00
5:15
5:30
35
ANNEXURE-‘D’
1.0
SCOPE
Design, manufacturing, testing, supply and delivery of AC, 3 Phase, 4 Wire, CT/PT
operated fully Static and AMR compatible Tri-Vector Energy Meters for measurement
of different electrical parameters listed elsewhere in the document including Active
Energy (kWh), Reactive Energy (kVArh), Apparent Energy (KVAH) etc. The detail scope is
given below.
2.0 APPLICATION
a)
b)
c)
d)
As Boundary Meters for Ring fencing of an Area,
In Substation on incoming/Outgoing HT feeders,
On Distribution Transformers
LT and HT Consumers
3.0 STANDARDS TO WHICH METERS SHALL COMPLY
Guidelines on “Data Exchange for Electricity Meter Reading, Tariff and Load Control
– Companion Specification” enclosed with this document as annexure.
IS: 14697 /1999 (reaffirmed 2004) Specification for AC Static Transformer operated
Watt Hour & VAR-Hour meters (class 0.5S);
IS-15707 Specification for Testing, evaluation, installation & maintenance of AC
Electricity Meters-Code of Practice
The equipment meeting with the requirements of other authoritative standards,
which ensure equal or better quality than the standard mentioned above, also shall be
considered; in case of conflict related with communication protocol, the Guidelines on
“Data Exchange for Electricity Meter Reading, Tariff and Load Control – Companion
Specification” enclosed with this document as annexure shall prevail upon. For conflict
related with other parts of the specification, the order of priority shall be – i) This
technical specification ii) IS: 14697
/1999 (reaffirmed 2004).
4. CLIMATIC CONDITIONS:-The Static Energy Meter shall be suitable for
satisfactorily working under the following climatic conditions.
1.
Max. ambient air temperature
600C
2.
Min. ambient air temperature
(-)50C
3.
Average Daily Max. ambient temperature
400C
4.
Max. yearly
temperature
320C
weighted
average ambient
36
5.
Max. altitude above mean sea level
1000 m
6.
Minimum Relative Humidity (%age)
26
7.
Max. Relative Humidity (%age)
95
8.
Avg. No. of Rainy days/year
120
9.
Avg. annual rainfall
900 mm
10.
Maximum wind pressure
195 kg/m2
5
GENERAL TECHNICAL REQUIREMENTS
1
TYPE
2
3
FREQUENCY
ACCURAC
Y CLASS
SECONDAR
Y VOLTAGE
4
5
6
7
8
9
BASIC
CURRENT (Ib)
MAXIMUM
CONTINUOU
S CURRENT
POWER
CONSUMPTIO
N
POWER FACTOR
DESIGN
AMR Compatible Static, 3 Ph, 4 Wire Tri-Vector
Energy
50
Hz ±5%
Meter
0.5S
1.For CT/PT operated HT meters-Suitable for operation
from
110V Ph-Ph or 63.5V Ph-N
2.For distribution transformer and other LTCT
operated Meters- Suitable for operation from 415V
Ph-Ph or 240 V Ph-N
-/5 Amps. as per existing CT for -feeders
2.0 Ib; Starting and Short time current shall be as per IS14697
i) The active and apparent power consumption, in
each voltage circuit, at reference voltage, reference
temperature
and reference frequency shall not exceed 1. 5 W and 8
VA. and reference
current, reference frequency
shall
not exceed
1.0each
VA current circuit, at
ii)temperature
The apparent
power
taken by
0.0 Lag -Unity- 0.0 Lead basic
Meter shall be designed with application specific
integrated circuit (ASIC) or micro controller; shall have
no moving part; electronic components shall be
assembled on printed circuit
board using surface mounting technology; factory
calibration
using high accuracy (0.05 class) software based test
bench.
37
6.0.
CONSTRUCTIONAL
ARRANGEMENT
REQUIREMENT/
METER
COVER
&
SEALING
6.1
METER CASE: The meter case & cover will either be ultrasonically welded
or
shall have push fit type arrangement with two no. polycarbonate seals, of good
quality, one each on either side, so that meter’s internal parts are only
accessible after breaking seals, ultrasonic welding, push fit arrangement or case
cover of the meter and it should become unserviceable. The material for base and
cover (transparent / translucent) of the meter shall be of Polycarbonate. The meter
shall be factory calibrated and shall have unidirectional screws, fully embedded so
that these cannot be unscrewed by means of pliers etc. for sealing. The meter
case shall have at least three mounting holes. 2 holes for mounting screws, on the
terminal block; sealed beneath the terminal cover and one for hanging screw on
the top.
6.2
WINDOWS: -The meter cover shall be of Toughened Glass or Reinforced
Polycarbonate material with one window. The window shall be of transparent
material, ultrasonically welded with meter cover / part & parcel of meter cover so
that it cannot be removed undamaged; without breaking the meter cover.
6.3
TERMINALS AND TERMINAL BLOCK: The terminals may be grouped in a
terminal block having adequate insulating properties and mechanical strength. The
terminal block shall be made from best quality non - hygroscopic, flame retardant
material (capable of passing the flammability tests, as per IS -11731) with nickelplated brass or aluminium alloy for connecting terminals. The clamping screw
should be provided inside the terminal cover and should have metallic sleeve
molded within the block to avoid damage during tightening of the screws. The
terminals in the terminal block shall be of adequate length in order to have proper
grip of conductor with the help of two screws through agency of a plate so as to
made cage type arrangement. The manner of fixing the conductors to the
terminals shall ensure adequate and durable contact such that there is no risk of
loosening or undue heating. Screw Connections, transmitting contact force and
screw fixing, which may be loosened and tightened several times during the life of
the meter, shall screw into a meter nut. All parts of each terminal shall be such that
the risk of corrosion, resulting from contact with any other meter part, is minimized.
Two screws shall be provided in each current terminal for effectively clamping the
external leads or thimbles. Each clamping screw shall engage at least 3 threads in
the terminal. The ends of screws shall be such as not to pierce the conductor.
Electrical connections shall be so designed that the contact pressure is not
transmitted through insulating material. For current circuits, the voltage is
considered to be the same as for the related voltage circuit.The
internal
diameter of terminal holes shall be 5.5mm (min.) The clearances and creep age
distances shall confirm to clause 6.60 of IS: 13779 /1993.
It shall conform to IS 11731
(FH-1category) besides meeting the test
requirement of heat deflection test as per ISO 75, glow wire test as per the
IS:11000 (part 2/SEC-1)1984 OR IEC PUB,60695-2-12, Ball pressure test as
per IEC--60695-10-2 and Flammability Test As per UL 94 or
As per IS
11731(Part-2) 1986
38
6.4
TERMINAL COVER:- The terminal cover shall be extended type, which can be
sealed independently of the meter cover. The terminal cover shall enclose the
actual terminals; the conductor fixing screws, the external conductors and their
insulation i.e. no part of meter or cable / accessories shall be visible from the front
of the meter. When the meter is mounted, no access to the terminal shall be
possible without breaking the seal (s) of the meter terminal cover. The terminal
cover shall have at least two sealing screws. The fixing screws used on the
terminal cover for fixing and sealing shall be kept captive in the terminal cover.
6.5
SEALING: - 2 no unidirectional sealing screw shall be provided for proper fixing of
meter cover with 2 no good quality polycarbonate seals, one each on either side,
so that the meter internal parts are only accessible after breaking the seals,
ultrasonic welding, push fit arrangement or case cover of the meter. Separate
sealing arrangements shall be provided for MDI reset and communication port. In
addition, the firm / supplier shall affix 2 no good quality, numbered hologram, on
base and cover; one on each side and its record should be forwarded to the Nigam.
7.0 WORKING ENVIRONMENT
As per IS 14697-1999 (reaffirmed 2004). Meter to perform satisfactorily under
Non-Air Conditioned environment (within stipulations of IS)
Meter body will conform to IP51 degree of protection. For outdoor use meter shall
be installed in sealed enclosure conforming to IP 55.
The meter shall be suitable designed for satisfactory operation under the hot and
hazardous tropical climate conditions and shall be dust and vermin proof. All the
parts and surface, which are subject to corrosion, shall either be made of such
material or shall be provided with such protective finish, which provided suitable
protection to them from any injurious effect of excessive humidity.
8.0 MANUFACTURING PROCESS, ASSEMBLY AND TESTING
Meters shall be manufactured using latest and ‘state of the art’ technology and
methods prevalent in electronics industry. The meter shall be made from high
accuracy and reliable surface mount technology (SMT) components. All inward flow of
major components and sub assembly parts (CT, PT, RTCs/Crystal, LCDs, LEDs,
power circuit electronic components etc.) shall have batch and source identification.
Multilayer ‘PCB’ assembly with ‘PTH’ (Plated through Hole) using surface mounted
component shall have adequate track clearance for power circuits. SMT component
shall be assembled using automatic ‘pick-and-place’ machines, Reflow Soldering
oven, for stabilized setting of the components on ‘PCB’. For soldered PCBs, cleaning
and washing of cards, after wave soldering process is to be carried out as a standard
practice. Assembly line of the manufacturing system shall have provision for testing of
sub-assembled cards. Manual placing of components and soldering, to be
minimized to items, which cannot be handled by automatic machine. Handling of ‘PCB’
with ICs/C-MOS components, to be restricted to bare minimum and precautions to
prevent ‘ESD’ failure to be provided. Complete assembled and soldered PCB should
undergo functional testing using computerized Automatic Test Equipment.
39
Fully assembled and finished meter shall undergo ‘burn-in’ test process for 12 hrs at
55 degree Celsius (Max. temperature not to exceed 60 degree Celsius) under base
current (Ib) load condition.
Test points should be provided to check the performance of each block/stage of the
meter circuitry. RTC shall be synchronized with NPL time at the time of manufacture.
Meters testing at intermediate and final stage shall be carried out with testing
instruments, duly calibrated with reference standard, with traceability of source and date.
9.0 DISPLAYS
The meter shall have 7 digits (with ±indication), parameter identifier, backlit Liquid
Crystal Display (LCD) of minimum 10 mm height, wide viewing angle. Auto display
cycling push button required with persistence time of 10 Seconds. LCD shall be
suitable for temperature withstand of 70 deg C; Sequence of display of various
instantaneous electrical parameters shall be as desired by Purchaser at the time of
order.
The data stored in the meters shall not be lost in the event of power failure. The meter
shall have Non Volatile Memory (NVM), which does not need any battery backup. The
NVM shall have a minimum retention period of 10 years.
10.0 PERFORMANCE UNDER INFLUENCE QUANTITIES
The meters performance under influence quantities shall be governed by IS 146971999 (reaffirmed 2004). The accuracy of meter shall not exceed the permissible limits
of accuracy as per standard IS: 14697 (latest version).
11.0 OUTPUT DEVICE
Energy Meter shall have test output, accessible from the front, and be capable of
being monitored with suitable testing equipment while in operation at site. The
operation indicator must be visible from the front and test output device shall be
provided in the form of LED. Resolution of the test output device shall be sufficient to
enable the starting current test in less than 10 minutes.
12.0 REAL TIME INTERNAL CLOCK (RTC)
RTC shall be pre-programmed for 30 Years Day/date without any necessity for
correction. The maximum drift shall not exceed +/- 300 Seconds per year.
The clock day/date setting and synchronization shall only be possible through
password/Key code command from one of the following:
a) Hand Held Unit (HHU) or Meter testing work bench and this shall need
password enabling for meter;
b) From remote server through suitable communication network or Sub-station data logger
‘PC’.
13.0 QUANTITIES TO BE MEASURED & DISPLAYED
40
The meter shall be capable of measuring and displaying the following electrical
quantities within specified accuracy limits for polyphase balanced or unbalanced loads:
a) Instantaneous Parameters such as phase and line voltages, currents, power
factors, overall kVA, kW, kVAr, power factor, frequency etc as per details given
in the table below and enclosed annexure.
b) Block Load Profile Parameters such as kVAh/kWh/kVArh (lag/lead)/Maximum
Demand
(MD) in kW/kVA/power factor/phase and line voltages/currents etc
(minimum 5 parameters) as per details given in the table below and enclosed
annexure.
c) Daily Load Profile Parameters such as cumulative energy kWh
(import/export)/cumulative kVAh (while kW- import/export)/cumulative energy
kVArh (quadrant-1/2/3/4)/reactive energy high (V>103%)/low (V<97%), etc as per
details given in the table below and enclosed annexure.
In addition to above the meter shall also record the Name plate details,
programmable parameters (readable as profile), occurrence and restoration of tamper
events along with the parameters (Table A5.1, A5.2 and A6.1 to A6.8 respectively of
enclosed guideline document)
Detail of category wise parameters requirement suitable for specific location
such as feeder/DT metering, interface points/boundary points is given in following
tables of guidelines document enclosed as annexure:
Category
Parameter group
Substation Feeder/ Distribution
Transformer meter
Instantaneous parameters
Block
Load
Profile
parameters parameters
Instantaneous
Block
Load
Profile
parametersLoad
Daily
Profile
parameters parameters
Instantaneous
Block
Load
Profile
parameters
Billing
Profile parameters
Name Plate details
Programmable Parameters
Event Conditions
Boundary/Ring fencing/Interface
Meters
HT Consumer Meters
Substation Feeder/ Distribution
Transformer/Boundary/Ring
fencing/Interface/HT
Consumer Meters
Logging parameters for each
of the event condition – shall
be selected
Capture parameters for
event as
applicable
(Event
Log Profile)
Annexure
No.
A2.1
A2.2
Table
A3.1
A3.2
A3.3
A4.1
A4.2
A4.3
A5.1
A5.2
A6.1 to A6.7
A6.8
14.0 DEMAND INTEGRATION PERIOD
The maximum demand integration period may be set at 15 minute or 30 minute by
purchaser as per requirement.
41
15.0 MD RESET
It should be possible to reset MD by the following options:
a) Communication driven reset
b) Local push button
c) Auto reset at 24:00 hrs at the end of each billing cycle
16.0 MARKING OF METERS
The marking of meters shall be in accordance with IS: 14697 /1999 (reaffirmed 2004).
The meters shall bear marking “Purchased under R-APDRP scheme/property of
DHBVN/UHBVN”.
The meter shall also store name plate details as given in the table A5.1 of annexure.
These shall be readable as a profile as and when required.
17.0COMMUNICATION CAPABILITY
The meter shall be provided with two ports for communication of the measured/collected
data as per guideline document enclosed in the annexure, i.e. a hardware port
compatible with RS 232 or RS 485 specifications which shall be used for remote access
through suitable Modem (GPRS/GSM/EDGE/CDMA/PSTN/LPR) and an Optical
port complying with hardware specifications detailed in IEC-62056-21. This shall be
used for local data downloading through a DLMS compliant HHU. One-meter long cable,
of suitable size, having facility at one end, for connecting to the optical port, other end
shall be provided with RS – 232 Connector shall be provided, as spare cable, so that
the optical port can be brought out the meter box. The meter shall have necessary
facilities to transfer the data via the communication port, the hand held data collection
device (DCD) and also to down load this on a P.C to get complete details in numeric
form. The necessary software for this purpose shall be provided by the supplier,
without any condition, free of cost
The RS 485 port shall be used at Substations suitable for multi-drop connections of the
meter for exporting data to sub-station data logger/DCU/Computer and the remote end
server. The RS 232 port shall be used at boundary points meters and Distribution
Transformer meters capable to transfer and export data to the remote end server
through suitable communication mediums (GPRS/GSM/EDGE/CDMA/ PSTN/LPR).
Both ports shall support the default and minimum baud rate of 9600 bps.
18.0 HAND HELD UNIT (HHU)
To enable local reading of meters data a DLMS compliant HHU shall be used. The HHU
shall be as per specification given in the enclosed guidelines document. It shall be
compatible to the DLMS compliant energy meters that are to be procured/ supplied
on the basis of this specification. The HHU shall be supplied by the meter
manufacturer along with the meter. Numbers of HHU to be procured shall be decided by
the purchaser.
42
19.0 TAMPER & FRAUD MONITORING FEATURES
The meter shall work satisfactorily under presence of various influencing conditions
like External Magnetic Field, Electromagnetic Field, Radio Frequency Interference,
harmonic Distortion,
Voltage/Frequency Fluctuations, and electromagnetic High
Frequency Fields etc.
The meter shall be immune to abnormal voltage/frequency generating devices and
shall record the occurrence and restoration of such tamper events along with
parameters such as current, voltages, kWh, power factor, event code, date & time etc.
(listed in Table A6.1 to A6.7 in enclosed document).
Tamper details shall be stored in internal memory for retrieval by authorized
personnel through either of the following:
i)
HHU.
ii) Remote access through suitable communication network.
Minimum 200 numbers of events (occurrences & restoration with date & time)
should be available in the meter memory.
20.0 TYPE TESTS
The meter offered should have successfully passed all type tests described in the IS
14697 and the meter Data Transfer and Communication capability as per
enclosed guidelines document. Type test certificate shall be submitted along with the
offer and the same shall not be more than 36 months old at the time of bid submission.
Make & type of major components used in the type-tested meter shall be indicated in
the QAP. The condition are to be relaxed by the purchasers (utilities) for the bids to be
issued in next six months (i.e. upto Feb 2010) to accommodate design, development
and testing of the new standard meters, conforming to the guidelines document
enclosed as annexure, by manufacturers. The bidder shall have to submit the
required type test certificate (as per bid requirement) to the purchaser (utility) at the time
of meters delivery.
Further Purchaser shall reserve the right to pick up energy meters at random from the
lots offered and get the meter tested at third party lab i.e. CPRI / agencies listed at
Appendix-C of Latest – standardization of AC static electrical energy meters – CBIP
publication NO.-304/ NPL / CQAL/ ERTL / ERDA at the sole discretion of the Purchaser.
The supplier has no right to contest the test results of the third party lab or for
additional test and has to replace/take corrective action at the cost of the supplier.
It shall be the responsibility of the supplier to arrange such tests and Purchaser shall
be informed of the date and time of conduction of tests well in advance to enable him to
witness such tests. Test charges of the testing authority, for such successful repeat type
tests, shall be reimbursed at actual by the Purchaser.
43
21.0 ACCEPTANCE & ROUTINE TESTS
Criteria for selection for such tests and performance requirements shall be as per IS
14697-1999 (reaffirmed 2004)
Additional acceptance shall include Surge withstand (SWC) for 6 kVp as per IEC
62052-11, Lightning impulse test and HF disturbance test as per IS 14697. One sample
meter per order from one of the offered lot shall be subjected to these specific tests.
Meters subjected to these tests shall not be used after tests.
Accuracy tests shall be performed at the beginning and at the end of the acceptance
tests specified.
22.0 QUALITY ASSURANCE:
The manufacturer shall have a comprehensive quality assurance program at all
stages of manufacture for ensuring products giving reliable, trouble free performance.
Details of the bidder’s quality assurance and test set up shall be furnished with the
bid. A detailed quality assurance program shall be finalized with the successful
bidder during the award stage. Bidder shall furnish following information along with his
bid:
i)
Organization structure of the manufacturer and his main sub-suppliers (PCBs,
SMT cards, CT/PT) with details of ‘QA’ setup, overall workflow;
ii) Copy of system manual showing ‘QAP’ (Quality Assurance Plan) as actually
practiced during manufacturing and final testing.
iii) List of raw materials and critical components (ASIC chip, crystal clock, memory
register Chip, transformers, optical ports etc.) with their suppliers;
iv) Stage inspection of product before final testing;
v) Procedure adopted for ‘In-situ’ testing of PCBs, after placement of surface
mounted component, for quantitative parametric variation of tolerance by self or subcontractor.
vi) Testing and calibration facility, date of calibration of test bench, manpower data of
bench operators;
vii) Sample copies of test certificate of bought out components.
viii) The manufacturer shall be responsible to pay penalty of Rs 20,000/- for
each occasion at which the fake inspection call has been made or the material is
rejected during testing/inspection by the authorized agency/representative of
the Nigam. This penalty would be in addition to the expenses incurred by the
Nigam in deputing the Inspecting Officer, carrying out such inspection.
23.0 QUALIFYING REQUIREMENTS
i)
Bidder should be a manufacturer;
ii) He should have all the facility in his works for design, assembly, quality assurance,
burn- in test (Fully assembled Energy Meter), testing (all routine and
acceptance tests), automatic calibration of Energy Meter on software based test
bench, qualified team of technical and software engineers;
iii) The average annual turnover of the manufacturer for Energy meters for the three
(3) best financial years out of last five (5) years, should be at least Rs.** ……………
Lakhs. (** is 2 x Package Cost x 12/ Work completion schedule in Months)
iv)
Notwithstanding anything stated herein under, the Purchaser reserves the
44
right to assess the capacity and capability of the bidder to execute the work,
should the circumstances warrant such assessment in the overall interest of the
Purchaser.
24.0 FIXING & CONNECTION ARRANGEMENT
Manufacturer shall ensure following technical points:
i)
ii)
iii)
Meter shall be suitable for mounting on Simplex type vertical panel with front door;
CAT- M4 disconnecting type TBs to be used for Current circuit; Panel wiring to
be properly dressed and harnessed; External cables to enter panel from bottom
gland plate using double compression glands.
Meter installation & Inter-connection from existing CT/PT connections to energy
meters in the panel shall be in the scope of contractor/bidder. The external cabling
from existing CT/PT to Energy Meter panel shall be in the scope of purchaser.
Energy Meter terminals block shall be adequately sized with regard to
maximum conductor dimension, commensurate with current rating of Energy Meter.
25.0 CHALLENGE CLAUSE:
The material offered/received after the inspection by the authorized Inspecting
Officer may again be subjected to the test for losses or any other parameters from
any testing house/in house technique of the Nigam having requisite capabilities
and facilities. The results if found deviating/ unacceptable or non-complying to
approved GTPs the lot shall be rejected and bidder shall arrange to supply the
replacement within thirty (30) days of such detection at his cost including to &
fro transportation. In addition to this penalty @10% of cost of the inspected lot of
material shall be imposed.
45
ANNEXURE - A
GUARANTEED TECHNICAL PARTICULARS FOR CT / PT OPERATED TRIVECTOR
METERS /LT CT meter
1)
Maker’s Name
2)
Meter Make & Type
3)
Fixing Arrangement
4)
Basic current (Amperes)
5)
Rated Maximum Continuous
Current (Amperes)
6)
Standard Reference Voltage
& Frequency
7)
Class of accuracy
8)
Power Loss in each
i) Voltage circuit
ii) Current circuit
9)
Minimum Starting Current
10)
Type of display
11)
No. of Digits
12)
Type of output Device
13)
Clearances and
distance in the
creepage
I.
Terminal Block
II.
Terminal cover
46
III.
14)
Internal parts of the
meter
Material of
I.
Terminal Block
II.
Terminal cover
15)
Material of Terminals
16)
Material
of
Frame/Cover
17)
Window
material
18)
Number of seals provided
19)
Meter
arrangement
&
I.
Main Meter Cover
II.
Meter Terminal Cover
Total weight of the Meter
47
Annexure A2
Parameter List for ‘Category A’ meters
The parameters listed here are for Energy Accounting & Audit purposes. These
meters are identified for Feeder metering and DTC metering where the
power flow is unidirectional. In circumstances where bidirectional power flow is
to be measured then Category B Meters shall be deployed.
The parameters identified are grouped under Instantaneous (Table-A2.1) and
Block load profile (Table –A2.2). The tables include the name of the parameter,
the OBIS code and Interface class.
Association
Access
Rights:
Public Client - Read Only for Clock and no access for other
objects. Meter Reader – Read Only for all objects.
Utility Setting – Read & Write for Clock And Read Only for others.
TABLE- A2.1 – Instantaneous Parameters
Each of the parameters is a separate entity. The OBIS code for each
parameter is identified as per DLMS /COSEM protocol.
S.No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Parameter
Real Time Clock – Date and Time
Current - IR
Current - IY
Current – IB
Voltage - VRN
Voltage – VYN
Voltage – VBN
Voltage - VRY
Voltage – VBY
Signed Power Factor –R phase
Signed Power Factor - Y phase
Signed Power Factor - B phase
Three Phase Power Factor – PF
Frequency
Apparent Power – KVA
Signed Active Power – kW (+ Forward; Reverse)
Signed Reactive Power – kvar (+ Lag; - Lead)
Cumulative Energy – kWh
Cumulative Energy – kvarh – Lag
Cumulative Energy – kvarh – Lead
Cumulative Energy – kVAh
Cumulative power-off duration.
Cumulative tamper count
OBIS code
A.B.C.D.E.F
0.0.1.0.0.255
1.0.31.7.0.255
1.0.51.7.0.255
1.0.71.7.0.255
1.0.32.7.0.255
1.0.52.7.0.255
1.0.72.7.0.255
1.0.32.7.0.255
1.0.52.7.0.255
1.0.33.7.0.255
1.0.53.7.0.255
1.0.73.7.0.255
1.0.13.7.0.255
1.0.14.7.0.255
1.0.9.7.0.255
1.0.1.7.0.255
Interface
Class No /
Attribute
8/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
1.0.3.7.0.255
1.0.1.8.0.255
1.0.5.8.0.255
1.0.8.8.0.255
1.0.9.8.0.255
0.0.96.7.15.255
0.0.94.91.0.255
3/2
3/2
3/2
3/2
3/2
1/2
1/2
48
24
25
26
27
28
Cumulative MD resets count
Cumulative programming count
Date and time of last MD reset
Maximum Demand – kW
Maximum Demand – kVA
0.0.0.1.0.255
0.0.96.2.0.255
0.0.0.1.2.255
1.0.1.6.0.255
1.0.9.6.0.255
1/2
1/2
8/2
4 / 2, 5
4 / 2, 5
Note for TABLE- A2.1:
1. The items at 5, 6, and 7 are for 3Ф / 4W system of measurement with
NEUTRAL as reference point.
2. The items at 8, 9 are for 3 Ф / 3W system of measurement with YPHASE as reference point.
3. Signed Power factor – (+ indicates lag) and (- indicates lead).
4. The parameters at S No. 18 to 25 hold cumulative values at that instant
from the date of manufacturing or installation of meter as the case may be.
5. The above list is identified for the purpose of communication to HOST or
HHU.
6. The utilities may choose, based on needs, additional parameters for
display purpose ONLY.
7. Association Table
Snap shot of Instantaneous parameters: The parameters of TABLE – A2.1
shall be captured as a profile generic using the country specific OBIS code
1.0.94.91.0.255; The attribute 2 of each of the capture objects shall be copied
into the profile at the instant of a request from the Host.
Scaler Profile: This profile is meant for capturing the Scaler-unit of each of the
parameter listed in Table A2.1. This is modeled as profile generic (IC=7) and is
assigned the country specific OBIS code 1.0.94.91.3.255. There shall be only
one entry in the profile which is the attribute 3 of the Interface Class identified for
each object. This profile is not required to be updated periodically.
TABLE- A2.2 – Block Load profile Parameters
This is an array of load survey data captured as a profile generic. The OBIS
code is
1.0.99.1.0.255, with Interface class as 7. The capture objects of this block load
profile are as per Table-A2.2 and the captured attribute shall be attribute 2 of
each interface class. The capture object values will be copied into buffer of this
array automatically as per capture period which shall be set through OBIS
code 1.0.0.8.4.255 of recording interval 1.
Association Access Rights:
Public Client - No access for all objects.
Meter Reader – Read Only for all objects.
Utility Setting – Read Only for all objects.
49
S.No
Parameter
1
2
3
4
5
6
7
8
9
10
11
12
13
Real Time Clock – Date and Time
Current - IR
Current - IY
Current – IB
Voltage - VRN
Voltage – VYN
Voltage – VBN
Voltage - VRY
Voltage – VBY
Block Energy – kWh
Block Energy – kvarh – lag
Block Energy – kvarh – lead
Block Energy – kVAh
OBIS code
A.B.C.D.E.F
0.0.1.0.0.255
1.0.31.27.0.255
1.0.51.27.0.255
1.0.71.27.0.255
1.0.32.27.0.255
1.0.52.27.0.255
1.0.72.27.0.255
1.0.32.27.0.255
1.0.52.27.0.255
1.0.1.29.0.255
1.0.5.29.0.255
1.0.8.29.0.255
1.0.9.29.0.255
Interface
Class No /
Attribute
8/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
Note (TABLE- A2.2):
1. The items at 5, 6, and 7 are for 3Ф / 4W system of measurement
with NEUTRAL as reference point.
2. The items at 8, 9 are for 3 Ф / 3W system of measurement with YPHASE as reference point.
3. The parameters at S. No. 2 to 9 are the average values during the block
period time and stored at the end of that time block.
4. The parameters at S. No. 10 to 13 are the actual energy consumption
during that time block.
5. Capture objects for 3 Ф / 4W are items 1, 2,3,4,5,6,7,10,11,12,13.
6. Capture objects for 3 Ф / 3W are items 1, 2,3,4,8,9,10,11,12,13.
7. Support for Selective access shall be as defined in Section 11.2
Parameters for Accounting / Billing - The list of parameters in Table –
A2.1 and A2.2 shall be used for computing the daily accounting data at the
HOST.
Scaler Profile: This profile is meant for capturing the Scaler-unit of each of the
parameter listed in Table A2.2. This is modeled as profile generic (IC=7) and is
assigned the country specific OBIS code 1.0.94.91.4.255. There shall be only
one entry in the profile which is the attribute 3 of the Interface Class identified for
each object. This profile is not required to be updated periodically.
50
Annexure A3
Parameter list for Category B meters
The parameters listed here are for Boundary / Bank / Ring Fencing / ABT
Metering. The meter records parameters under import and or export conditions.
The parameters identified for this are grouped under Instantaneous (TableA3.1), Block load profile (Table –A3.2) and Daily Load profile (Table –A3.3).
The tables include the name of the parameter, the OBIS code and Interface
class.
Table – A3.1 – Instantaneous Parameters
Each of the parameters is a separate entity. The OBIS code for each
parameter is identified as per DLMS /COSEM protocol.
Association Access Rights:
Public Client - Read Only for Clock and no access for other
objects. Meter Reader – Read Only for all objects.
Utility Setting – Read & Write for Clock And Read Only for others.
S.No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Parameter
Real Time Clock – Date and Time
Current - IR
Current - IY
Current – IB
Voltage - VRN
Voltage – VYN
Voltage – VBN
Voltage - VRY
Voltage – VBY
Signed Power Factor - R phase
Signed Power Factor - Y phase
Signed Power Factor - B phase
Three Phase Power Factor – PF
Frequency
Apparent Power – KVA
Active Power – kW (Export)
Active Power – kW (Import)
Reactive Power – kvar (Export)
Reactive Power – kvar (Import)
Cumulative Energy – kWh (Import)
Cumulative Energy – kWh (Export)
Cumulative Energy – kVAh(Import)
Cumulative Energy – kVAh(Export)
Cumulative power-off duration.
OBIS code
A.B.C.D.E.F
0.0.1.0.0.255
1.0.31.7.0.255
1.0.51.7.0.255
1.0.71.7.0.255
1.0.32.7.0.255
1.0.52.7.0.255
1.0.72.7.0.255
1.0.32.7.0.255
1.0.52.7.0.255
1.0.33.7.0.255
1.0.53.7.0.255
1.0.73.7.0.255
1.0.13.7.0.255
1.0.14.7.0.255
1.0.9.7.0.255
1.0.1.7.0.255
1.0.2.7.0.255
1.0.3.7.0.255
1.0.4.7.0.255
1.0.1.8.0.255
1.0.2.8.0.255
1.0.9.8.0.255
1.0.10.8.0.255
0.0.96.7.15.255
Interface
Class No /
Attribute
8/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
1/2
51
25
26
27
28
Cumulative tamper count
Cumulative MD resets count
Cumulative programming count
Date and time of last MD reset
0.0.94.91.0.255
0.0.0.1.0.255
0.0.96.2.0.255
0.0.0.1.2.255
1/2
1/2
1/2
8/2
Note (Table– A3.1):
1. The items at 5, 6, and 7 are for 3Ф / 4W system of measurement with
NEUTRAL as reference point.
2. The items at 8, 9 are for 3 Ф / 3W system of measurement with YPHASE as reference point.
3. Signed Power factor – (+ indicates lag) and (- indicates lead).
4. The parameters at S No. 20 to 27 hold cumulative values at that instant
from the date of manufacturing or installation of meter as the case may be.
5. The above list is identified for the purpose of communication to HOST or
HHU.
6. The utilities may choose, based on needs, additional parameters for
display purpose ONLY.
Snap shot of Instantaneous parameters: The parameters of TABLE – A3.1
shall be captured as a profile generic using the country specific OBIS code
1.0.94.91.0.255; The attribute 2 of each of the capture objects shall be copied
into the profile at the instant of a request from the Host.
Scaler Profile: This profile is meant for capturing the Scaler-unit of each of the
parameter listed in Table A3.1. This is modeled as profile generic (IC=7) and is
assigned the country specific OBIS code 1.0.94.91.5.255. There shall be only
one entry in the profile which is the attribute 3 of the Interface Class identified for
each object. This buffer is not required to be updated periodically.
TABLE- A3.2 – Block Load profile Parameters
This is an array of load survey data captured as a profile generic. The OBIS
code is 1.0.99.1.0.255, with Interface class as 7. The capture objects of this
block load profile are as per Table-A3.2 and the captured object shall be
attribute 2 of each interface class. The capture object values will be copied into
a buffer of this array automatically as per capture period which shall be set
through OBIS code 1.0.0.8.4.255 of recording interval 1.
Association Access Rights:
Public Client – No access for all objects
Meter Reader – Read Only for all objects.
Utility Setting – Read Only for all objects.
S.No
Parameter
OBIS code
1
2
3
4
Real Time Clock – Date and Time
Frequency
Voltage - VRN
Voltage – VYN
A.B.C.D.E.F
0.0.1.0.0.255
1.0.14.27.0.255
1.0.32.27.0.255
1.0.52.27.0.255
Interface
Class No /
Attribute
8/2
3/2
3/2
3/2
5
6
7
Voltage – VBN
System Power Factor – PF
Net Energy – kWh
1.0.72.27.0.255
1.0.13.7.0.255
1.0.16.29.0.255
3/2
3/2
3/2
52
8
9
10
11
Note
A3.2):
Energy – kvarh – Quadrant 1
Energy – kvarh – Quadrant 2
Energy – kvarh – Quadrant 3
Energy – kvarh – Quadrant 4
1.0.5.29.0.255
1.0.6.29.0.255
1.0.7.29.0.255
1.0.8.29.0.255
3/2
3/2
3/2
3/2
(TABLE-
1. The parameters listed in this table are for load survey purpose and are
logged as per the block period time.
2. The Block period time for Interface meters is fixed at 15 min for which
the data storage will be for 22 days.
3. The parameters at S. No. 3 to 6 are the average values of 15 min
block and stored at the end of that time block.
4. The parameters at S. No. 7 to 11 are the actual energy consumption
during the 15 min time block.
5. Item 2 is an ABT parameter for absolute average value.
6. Item 7 is an ABT parameter for Net energy in the current 15 min block.
7. Support for Selective access shall be as defined in Section 11.2
Scaler Profile: This profile is meant for capturing the Scaler-unit of each of the
parameter listed in Table A3.2. This is modeled as profile generic (IC=7) and is
assigned the country specific OBIS code 1.0.94.91.6.255. There shall be only
one entry in the profile which is the attribute 3 of the Interface Class identified for
each object. This profile is not required to be updated periodically.
TABLE- A3.3 – Daily Load profile Parameters
This is an array of load survey data captured as a profile generic at the end of 24
hours. The OBIS code is 1.0.99.2.0.255, with Interface class as 7. The capture
objects of this daily load profile are as per Table-A3.3 and the captured attribute
shall be attribute 2 of each interface class. The capture object values will be
copied into a buffer of this array automatically as per capture period which shall
be set through OBIS code 1.0.0.8.5.255 of recording interval 2. The capture
period attribute shall be statically fixed as 24 hours.
Association Access Rights:
Public Client – No access for all objects
Meter Reader – Read Only for all objects.
Utility Setting – Read Only for all objects.
S.No
Parameter
1 Real Time Clock – Date and Time
2 Cumulative Energy – kWh – import
3 Cumulative Energy – kWh – export
OBIS code
A.B.C.D.E.F
0.0.1.0.0.255
1.0.1.8.0.255
1.0.2.8.0.255
Interface
Class No /
Attribute
8/2
3/2
3/2
53
4 Cumulative Energy – kVAh while
kW
import
5 Cumulative
Energy – kVAh while
kW
export energy high (V > 103%)
6 Reactive
7 Reactive energy low (V < 97%)
8 Cumulative Energy – kvarh
– Quadrant 1
9 Cumulative Energy – kvarh
– Quadrant 2
10 Cumulative Energy – kvarh
– Quadrant 3
11 Cumulative Energy – kvarh
– Quadrant 4
1.0.9.8.0.255
3/2
1.0.10.8.0.255
3/2
1.0.94.91.1.255 3 / 2
1.0.94.91.2.255 3 / 2
1.0.5.8.0.255
3/2
1.0.6.8.0.255
3/2
1.0.7.8.0.255
3/2
1.0.8.8.0.255
3/2
Note (TABLE- A3.3):
1. The parameters listed in this table are meant for billing purpose and
shall be logged at midnight (00 Hrs).
2. The storage time for these parameters is 22 days.
3. The parameters are the actual energy consumption during the 24 Hrs time
block.
4. These parameters shall be readable any instant by HOST/ HHU for any
of the parameters for any specified range and time.
5. Selected values can be read as profile.
6. The OBIS code (d=30) may be used when daily energy readings are
needed by the user.
7. Item 6 is an ABT parameter.
8. Item 7 is an ABT parameter.
9. Support for Selective access shall be as defined in Section 11.2
Scaler Profile: This profile is meant for capturing the Scaler-unit of each of the
parameter listed in Table A3.3. This is modeled as profile generic (IC=7) and is
assigned the country specific OBIS code 1.0.94.91.7.255. There shall be only
one entry in the profile which is the attribute 3 of the Interface Class identified for
each object. This profile is not required to be updated periodically.
54
Annexure A4
Parameter list for Category C meters
The parameters listed here are for HT (PT / CT) and LT (CT) consumer
metering. This meter records energy in import mode. These meters shall be
capable of recoding Import of energy. For customers who import energy and also
export energy, use of category B meters is recommended.
The parameters identified for this are grouped under Instantaneous (TableA4.1), Block load profile (Table –A4.2), and Billing (Table – A4.3). The tables
include the name of the parameter, the OBIS code and Interface class.
Table – A4.1 – Instantaneous Parameters
Each of the parameters is a separate entity. The OBIS code for each
parameter is identified as per DLMS /COSEM protocol.
Association Access Rights:
Public Client - Read Only for Clock and no access for other objects.
Meter Reader – Read Only for all objects.
Utility Setting – Read & Write for Clock And Read Only for others.
S.No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Parameter
Real Time Clock – Date and Time
Current - IR
Current - IY
Current – IB
Voltage - VRN
Voltage – VYN
Voltage – VBN
Voltage - VRY
Voltage – VBY
Signed Power Factor –R phase
Signed Power Factor - Y phase
Signed Power Factor - B phase
Three Phase Power Factor – PF
Frequency
Apparent Power – KVA
Signed Active Power – kW (+ Forward;
- Reverse)
Signed Reactive Power – kvar (+ Lag; - Lead)
Cumulative power-off duration.
Cumulative tamper count
Cumulative MD resets count
Cumulative programming count
Date and time of last MD reset
OBIS code
A.B.C.D.E.F
0.0.1.0.0.255
1.0.31.7.0.255
1.0.51.7.0.255
1.0.71.7.0.255
1.0.32.7.0.255
1.0.52.7.0.255
1.0.72.7.0.255
1.0.32.7.0.255
1.0.52.7.0.255
1.0.33.7.0.255
1.0.53.7.0.255
1.0.73.7.0.255
1.0.13.7.0.255
1.0.14.7.0.255
1.0.9.7.0.255
1.0.1.7.0.255
1.0.3.7.0.255
0.0.96.7.15.255
0.0.94.91.0.255
0.0.0.1.0.255
0.0.96.2.0.255
0.0.0.1.2.255
Interface
Class No /
Attribute
8/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
1/2
1/2
1/2
1/2
8/2
55
Note (Table – A4.1):
1. The items at 5, 6, and 7 are for 3Ф / 4W system of measurement with
NEUTRAL as reference point.
2. The items at 8, 9 are for 3 Ф / 3W system of measurement with YPHASE as reference point.
3. Signed Power factor – (+ indicates lag) and (- indicates lead).
4. The parameters at S No. 18 to 21 hold cumulative values at that instant
from the date of manufacturing or installation of meter as the case may be.
5. The above list is identified for the purpose of communication to HOST or
HHU.
6. The utilities may choose, based on needs, additional parameters for
display purpose ONLY.
7. Item 22 - Data type to be as for attribute 2 of IC 8, Clock.
Snap shot of Instantaneous parameters: The parameters of TABLE – A4.1
shall be captured as a profile generic using the country specific OBIS code
1.0.94.91.0.255. The attribute 2 of each of the capture objects shall be copied
into the profile at the instant of a request from the Host.
Scaler Profile: This profile is meant for capturing the Scaler-unit of each of the
parameter listed in Table A4.1. This is modeled as profile generic (IC=7) and is
assigned the country specific OBIS code 1.0.94.91.8.255. There shall be only
one entry in the profile which is the attribute 3 of the Interface Class identified for
each object. This buffer is not required to be updated periodically.
TABLE- A4.2 – Block Load profile Parameters
This is an array of load survey data captured as a profile generic. The OBIS
code is 1.0.99.1.0.255, with Interface class as 7. The capture objects of this
block load profile are as per Table-A4.2 and the captured attribute shall be 2 of
each interface class. The capture object values will be copied into a buffer of
this array automatically as per capture period which shall be set through OBIS
code 1.0.0.8.4.255 of recording interval
1.
Association Access Rights:
Public Client – No access for all objects.
Meter Reader – Read Only for all objects.
Utility Setting – Read Only for all objects.
S.No
1
2
3
4
5
6
Parameter
OBIS code
Real Time Clock – Date and Time
Current - IR
Current - IY
Current – IB
Voltage - VRN
Voltage – VYN
A.B.C.D.E.F
0.0.1.0.0.255
1.0.31.27.0.255
1.0.51.27.0.255
1.0.71.27.0.255
1.0.32.27.0.255
1.0.52.27.0.255
Interface
Class No /
Attribute
8/2
3/2
3/2
3/2
3/2
3/2
56
7
8
9
10
11
12
13
Voltage – VBN
Voltage - VRY
Voltage – VBY
Block Energy – kWh
Block Energy – kvarh – lag
Block Energy – kvarh – lead
Block Energy – kVAh
1.0.72.27.0.255
1.0.32.27.0.255
1.0.52.27.0.255
1.0.1.29.0.255
1.0.5.29.0.255
1.0.8.29.0.255
1.0.9.29.0.255
3/2
3/2
3/2
3/2
3/2
3/2
3/2
Note (TABLE- A4.2):
1.
2.
3.
4.
5.
6.
The parameters listed in this table are for load survey purpose and are
logged as per the block period time.
The parameters at S. No. 2 to 9 are the average values during the block
period time and stored at the end of that time block.
The parameters at S. No. 10 to 13 are the actual energy consumption
during that time block.
Capture objects for 3 Ф / 4W are items 1, 2,3,4,5,6,7,10,11,12,13.
Capture objects for 3 Ф / 3W are items 1, 2,3,4,8,9,10,11,12,13.
Support for Selective access shall be as defined in Section 11.2
Scaler Profile: This profile is meant for capturing the Scaler-unit of each of the
parameter listed in Table A4.2. This is modeled as profile generic (IC=7) and is
assigned the country specific OBIS code 1.0.94.91.9.255. There shall be only
one entry in the profile which is the attribute 3 of the Interface Class identified for
each object. This profile is not required to be updated periodically.
Table – A4.3 - Billing profile parameters
The contents of this table are for billing
purpose. Association Access Rights:
Public Client – No access for all objects.
Meter Reader – Read Only for all objects.
Utility Setting – Read Only for all objects.
S.No
Parameter
OBIS code
Interface Class
No / Attribute
A.B.C.D.E.F
1
2
3
4
5
6
7
8
9
10
Billing date
System Power Factor for billing
period
Cumulative
Energy – kWh
Cumulative Energy – kWh – TZ1
Cumulative Energy – kWh – TZ2
Cumulative Energy – kWh – TZ3
Cumulative Energy – kWh – TZ4
Cumulative Energy – kWh – TZ5
Cumulative Energy – kWh – TZ6
Cumulative Energy – kWh – TZ7
1.0.0.1.2.255
1.0.13.0.0.255
1.0.1.8.0.255
1.0.1.8.1.255
1.0.1.8.2.255
1.0.1.8.3.255
1.0.1.8.4.255
1.0.1.8.5.255
1.0.1.8.6.255
1.0.1.8.7.255
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
3/2
57
11 Cumulative Energy – kWh – TZ8
1.0.1.8.8.255
3/2
12 Cumulative Energy – kvarh – Lag
1.0.5.8.0.255
3/2
13 Cumulative Energy – kvarh – Lead 1.0.8.8.0.255
3/2
14 Cumulative Energy – kVAh
1.0.9.8.0.255
3/2
15 Cumulative Energy – kVAH – TZ1
1.0.9.8.1.255
3/2
16 Cumulative Energy – kVAH – TZ2
1.0.9.8.2.255
3/2
17 Cumulative Energy – kVAH – TZ3
1.0.9.8.3.255
3/2
18 Cumulative Energy – kVAH – TZ4
1.0.9.8.4.255
3/2
19 Cumulative Energy – kVAH – TZ5
1.0.9.8.5.255
3/2
20 Cumulative Energy – kVAH – TZ6
1.0.9.8.6.255
3/2
21 Cumulative Energy – kVAH – TZ7
1.0.9.8.7.255
3/2
22 Cumulative Energy – kVAH – TZ8
1.0.9.8.8.255
3/2
23 MD – kW
1.0.1.6.0.255
4 / 2 ,5
24 MD – kW – TZ1
1.0.1.6.1.255
4 / 2 ,5
25 MD – kW – TZ2
1.0.1.6.2.255
4 / 2 ,5
26 MD – kW – TZ3
1.0.1.6.3.255
4 / 2 ,5
27 MD – kW – TZ4
1.0.1.6.4.255
4 / 2 ,5
28 MD – kW – TZ5
1.0.1.6.5.255
4 / 2 ,5
29 MD – kW – TZ6
1.0.1.6.6.255
4 / 2 ,5
30 MD – kW – TZ7
1.0.1.6.7.255
4 / 2 ,5
31 MD – kW – TZ8
1.0.1.6.8.255
4 / 2 ,5
32 MD – kVA
1.0.9.6.0.255
4 / 2 ,5
33 MD – kVA – TZ1
1.0.9.6.1.255
4 / 2 ,5
34 MD – kVA – TZ2
1.0.9.6.2.255
4 / 2 ,5
35 MD – kVA – TZ3
1.0.9.6.3.255
4 / 2 ,5
36 MD – kVA – TZ4
1.0.9.6.4.255
4 / 2 ,5
37 MD – kVA – TZ5
1.0.9.6.5.255
4 / 2 ,5
38 MD – kVA – TZ6
1.0.9.6.6.255
4 / 2 ,5
39 MD – kVA – TZ7
1.0.9.6.7.255
4 / 2 ,5
40 MD – kVA – TZ8
1.0.9.6.8.255
4 / 2 ,5
Note:
1. The data are stored up to 6 billing cycles. The data are the actual consumption
during the billing period. The Billing profile is modeled as Profile generic (IC: =
7) object with OBIS Code 1.0.98.1.0.255. The capture objects of this load
profile are as per Table- A4.3. The capture object values will be copied
into buffer of this object either automatically or asynchronously. The
capture period is set to zero, billing action is controlled by billing dates as
provided in section 10 and table A5.2.
2. Support for Selective access shall be as defined in Section 11.2
3. The current cycle billing parameters shall be readable as the values of the
latest billing period, on demand. This shall be in addition to the last 6 billing
period data which shall be available in the Profile buffer as the last 6 entries in
the buffer.
4 The captured attributes in case of Interface Class 4 (Extended register)used
for MD values will be attributes 2 and 5 (Value and Timestamp)
58
Scaler Profile: This profile is meant for capturing the Scaler-unit of each of the
parameter listed in Table A4.3. This is modeled as profile generic (IC=7) and is
assigned the country specific OBIS code 1.0.94.91.10.255. There shall be only
one entry in the profile which is the attribute 3 of the Interface Class identified for
each object. This profile is not required to be updated periodically.
59
Annexure A5
Abstract Parameters
Table A5.1 – Name Plate Details.
The contents of this table are common to all meters. The data are meter
specific information.
Association Access Rights:
Public Client – No access for all objects.
Meter Reader – Read Only for all objects.
Utility Setting – Read Only for all objects.
S.No
1
2
3
4
5
6
7
Parameter
OBIS code
Meter Serial Number
Manufacturer name
Firmware Version for meter
Firmware Version for communications
Internal CT ratio
Internal PT ratio
Meter year of manufacture
A.B.C.D.E.F
0.0.96.1.0.255
0.0.96.1.1.255
0.0.96.1.2.255
0.0.96.1.3.255
1.0.0.4.2.255
1.0.0.4.3.255
0.0.96.1.4.255
Interface
Class
1 (Data)
1
1
1
1
1
1
Table A5.2 – Programmable Parameters.
Association Access Rights:
Public Client – No access for all
objects. Meter Reader – Read Only
for all objects. Utility Setting – Read
Write for all objects.
S.No
Parameter
OBIS code
Interface
Class
A.B.C.D.E.F
Real Time Clock – Date and Time
Demand Integration Period
Profile Capture Period
Single-action Schedule for Billing
Dates
5 Activity Calendar for Time Zones
6 etc.
Time Zones script table
1
2
3
4
0.0.1.0.0.255
1.0.0.8.0.255
1.0.0.8.4.255
0.0.15.0.0.255
8 (Clock)
1 (Data)
1
22
0.0.13.0.0.255
20
0.0.10.0.100.255 9
Note (Table A5.2):
1. The parameters are programmable by the utility engineers with required
access rights.
2. Programming of any of the parameters shall increment the
“Cumulative programming count” value.
60
Annexure A6
Event Reference Table
Events
Any abnormal / fraud / tamper condition is considered as an Event and stored
in an Event code object (OBIS: = 0.0.96.11.e.255 IC: = 1, values of E range from
0 to 5). The value (attr-2) of this object stores identifier corresponding to most
recent event occurred in the meter. Unique identifier is assigned to occurrence
and restoration of all possible events (identified so far) in the event reference
tables (Table-A6.1 to A6.7). Thus event code object will tell only about the most
recent event and to get a picture of all events and associated information (at the
time of event) an Event log object is used. An event log object is modeled as
Profile generic (OBIS: = 0.0.99.98.e.255 IC: = 7, values of E range from 0 to
5). The buffer (attr-2) of this profile object will store (asynchronously) a new
entry for every event (occurrence and restoration are considered as
separate events). The capture objects for the event log object is define below in
Table-A6.8.
Table – A6.1] – Indian Event Reference Table – Voltage Related
EVENT ID Descriptions
1.
R-Phase – PT link Missing (Missing Potential) –
Occurrence
2.
R-Phase
– PT link Missing (Missing Potential) –
Restoration
3.
Y-Phase – PT link Missing (Missing Potential) –
Occurrence
4.
Y-Phase
– PT link Missing (Missing Potential) –
Restoration
5.
B-Phase – PT link Missing (Missing Potential) –
Occurrence
6.
B-Phase
– PT link Missing (Missing Potential) –
Restoration
7.
Over Voltage in any Phase - Occurrence
8.
Over Voltage in any Phase - Restoration
9.
10.
Low Voltage in any Phase - Occurrence
Low Voltage in any Phase - Restoration
11.
12.
Voltage Unbalance - Occurrence
Voltage Unbalance - Restoration
Table – A6.2] – Indian Event Reference Table – Current Related
EVENT ID Descriptions
1.
Phase – R CT reverse – Occurrence
2.
Phase – R CT reverse – Restoration
3.
4.
Phase – Y CT reverse – Occurrence
Phase – Y CT reverse – Restoration
61
5.
6.
Phase – B CT reverse – Occurrence
Phase – B CT reverse – Restoration
7.
8.
Phase – R CT Open - Occurrence
Phase – R CT Open - Restoration
9.
10.
Phase – Y CT Open - Occurrence
Phase – Y CT Open - Restoration
11.
12.
Phase – B CT Open - Occurrence
Phase – B CT Open - Restoration
13.
14.
Current Unbalance - Occurrence
Current Unbalance - Restoration
15.
16.
CT Bypass – Occurrence
CT Bypass – Restoration
Over Current in any Phase –
Occurrence
Over
Current in any Phase –
Restoration
Table – A6.3] – Indian Event Reference Table – Power Related
17.
18.
EVENT ID Descriptions
1
Power failure – Occurrence
2
Power failure – Restoration
Table – A6.4] – Indian Event Reference Table – Transaction Related
EVENT ID
1
2
3
4
5
6
7
8
9
Descriptions
TOU Programming
Tamper resetting
Manual MD reset
Demand integration period change
Display change
RTC Programming / Change
Firmware upgrade
Modification of internal ct/pt ratio (even by manufacturer’s
proprietary software)
Communication driven MD Reset
Table – A6.5] – Indian Event Reference Table – Others
EVENT ID
1
2
Descriptions
Influence of permanent magnet or AC/ DC electromagnet Occurrence
Influence of permanent magnet or AC/ DC electromagnet Restoration
62
3
4
Neutral Disturbance - HF & DC - Occurrence
Neutral Disturbance - HF & DC - Restoration
5
6
Very Low PF - Occurrence
Very Low PF - Restoration
Table – A6.6] – Indian Event Reference Table – Non-rollover Events
EVENT ID Descriptions
1
Meter Cover Opening –
Occurrence
Table – A6.7] – Indian Event Reference Table – Control events
EVENT ID Descriptions
1
Meter
disconnected
2
Meter
connected
Table- A6.8] – Capture parameters for event as applicable
(Event Log Profile)
Sno
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Parameter
Date and Time of event
Event Code
Current - IR
Current - IY
Current – IB
Voltage - VRN (3 Ф / 4W)
Voltage – VYN (3 Ф / 4W)
Voltage – VBN (3 Ф /
4W)
Voltage
- VRY (3 Ф / 3W)
Voltage – VYB (3 Ф / 3W)
Power Factor – R phase
Power Factor – Y phase
Power Factor – B phase
Cumulative Energy – kWh
A
0
0
1
1
1
1
1
1
1
1
1
1
1
1
B
0
0
0
0
0
0
0
0
0
0
0
0
0
0
C
1
96
31
51
71
32
52
72
32
52
33
53
73
1
D
0
11
7
7
7
7
7
7
7
7
7
7
7
8
E
0
0
0
0
0
0
0
0
0
0
0
0
0
0
F
255
255
255
255
255
255
255
255
255
255
255
255
255
255
IC
8 (Clock)
1 (Data)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
3 (Register)
NOTE for Tables – A6.1, A6.2, A6.3, A6.4, A6.5, A6.6, A6.7 and A6.8,
1. These are the event conditions generally recorded in consumer meters, utilities
may select any the above event conditions based on their practice. The need and
applicability of these events for other type of meters shall be considered by
Utility.
2. Either Occurrence or Restoration is considered an event.
3. For each of the events a certain list of parameters will be captured.
4. The list capture parameters are given in Table-A6.8. The utility shall select the
required parameters from the table A6.8 as per their practice.
63
5. For each of the event captured “Cumulative tamper count” value will be
incremented except for events from Tables A6.3, A6.4 and A6.7
6. Capture parameters mentioned in Table A6.8 are captured when event
occurrence and restoration is logged.
7. For events “Power On-OFF” and “Cover Open” no parameters shall be captured.
8. The attributes of each of the IC (Interface Class) is to be identified while finalizing
the Companion Standard.
9. For 3 Ф / 4W the reference point is NEUTRAL
10. For 3 Ф / 3W the reference point is Y-Phase
11. Support for Selective access shall be as defined in Section 11.2
64