HARYANA VIDYUT PRASARAN NIGAM LTD.
TECHNICAL SPECIFICATION FOR
NUMERICAL DISTANCE
PROTECTION RELAYS WITH 61850 PROTOCOL
COMPLIANT.
[SPECIFICATION NO. HPD/S-108/HPM-502/VOL-IV/PROT., SEP, 2016]
CHIEF ENGIENER/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.
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CONTENTS
---------------------------------------------------------------------------------------------------------CLAUSE NO.
TITLE
PAGE NO.
---------------------------------------------------------------------------------------------------------1.0
SCOPE
3
2.0
STANDARDS
3
3.0
SERVICE CONDITION
4
4.0
GENERAL REQUIREMENTS
5
5.0
GENERAL TECHNICAL REQUIREMENTS
6
6.0
TESTS
11
7.0
DOCUMENTATION
11
ANNEXURES
A.
B.
GUARANTEED TECHNICAL PARTICULARS
SCHEDULE OF DEVIATIONS FROM THE SPECIFICATION
---------------------------------------------------------------------------------
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13
15
1.0
1.1
1.2
1.3
1.4
1.5
1.6
2.0
2.1
SCOPE:
This specification covers the design, engineering, manufacture, inspection &
testing at manufacturer's work before dispatch, packing, forwarding and delivery
at discretion of purchaser of Numerical Distance Protection Relays with 61850
protocol compliant for400kV, 220kV, 132kV& 66kV S/Stns. in the state of
Haryana. The input, output & configurable / labeled LEDs (Opto) of relays shall be
configured at the time of inspection.
Unless specifically excluded from the offer, all fittings and accessories, not
specifically stated in this specification but which are necessary for satisfactory
operation of the scheme or to complete the work in a good workmanship shall be
deemed to have been included in the scope of supply of the successful Bidder.
Bidders shall carefully check the Technical details of various equipment as per
site requirement, if so required, while selecting and offering the equipment.
This purchase order shall include supply of all items required to complete the
system not withstanding the fact that any items may have been omitted from the
specification.
CO-ORDINATION :
The Supplier shall be responsible for preparing general wiring diagram
coordinating with existing C&R panel boards equipments.
EXPERIENCE:
The supplier of relays shall be manufacturer of relays.
STANDARDS :
The equipment offered shall conform to latest relevant Indian Standards listed
hereunder or equivalent IEC :-
Sr. No.
1.
Standard
IS: 5
Title
Color for ready mix paints.
2.
IS: 375
3.
IS: 694
Marking & arrangements for switchgear, bus bars, main
connections & auxiliary wiring.
PVC insulated cable for working voltage upto and including
1100 V.
4.
IS: 5561
Electric Power Connectors.
5.
6.
IS: 4483
IS: 2419
7.
8.
9.
IS :3231
IS :8686
IS :2147
Panel Cut-out dimensions for Electrical relays
Dimensions for panel mounted indicating & recording
electrical instruments.
Electrical relays for power system protection.
Static protective relays.
Degree of protection provided by enclosures for low voltage
switchgear & control gear.
2.2
2.3
2.4
The works covered by the specification shall be designed, engineered,
manufactured, built, tested and commissioned in accordance with the Acts, Rules,
Laws and Regulations of India.
The equipment to be furnished under this specification shall conform to latest
issue with all amendments of standard specified above.
In addition to meeting the specific requirement called for in the Technical
Specification, the equipment shall also conform to the general requirement of the
relevant standards and shall form an integral part of Specification.
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2.5
2.6
2.7
2.8
2.9
2.10
The Bidder shall note that standards mentioned in the specification are not
mutually exclusive or complete in themselves, but intended to compliment each
other.
The Contractor shall also note that list of standards presented in this specification
is not complete. Whenever necessary the list of standards shall be considered in
conjunction with specific IS/IEC.
When the specific requirements stipulated in the specification exceed or differ than
those required by the applicable standards, the stipulation of the specification shall
take precedence.
Other internationally accepted standards which ensure equivalent or better
performance than that specified in the standard referred shall also be accepted.
In case governing standards for the equipment is different from IS or IEC, the
salient points of difference shall be clearly brought out alongwith English language
version of standard or relevant extract of the same. The equipment conforming to
standards other than IS/IEC shall be subject to Employer's approval.
The bidder shall clearly indicate in his bid the specific standards in accordance
with which the works will be conformed.
3.0
3.1
SERVICE CONDITIONS :
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 (°C)
50
iii)
Min. ambient air temp (°C)
-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(meters). 1000
ix)
Isoceraunic level (days/Year)
50
x)
Seismic level (horizontal acceleration)
0.3 g
xi)
Average number of dust storm
35
(days per annum)
Note:-i) Moderately hot and humid tropical climate conducive to rust and fungus
growth. The climatic conditions are also prone to wide variations in
ambient conditions.
ii)
3.2
Air conditioning or any special arrangement for making the control
room dust proof shall not be provided in any of the S/Stn.
All control wiring, equipment & accessories shall be protected against fungus
growth, condensation, vermin & other harmful effects due to tropical environments.
3.3
AUX. POWER SUPPLY :
i)
A.C. Supply
: 415/240 Volts, 3-phase, 4-wire, 50 Hz
Voltage variation
: ± 10%
Frequency variation :± 3%
ii)
D C Supply
: 220 Volts, 2 wire available from S/Stn. battery (insulated)
Variation
:±10%.
3.4
220kV, 132kV& 66kV voltages will be three phase having normal frequency of 50
Hz.
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4.0
4.1
GENERAL REQUIREMENTS:
MATERIAL & WORKMANSHIP:
All material used in the construction of the relays shall be of the best quality
obtainable of their respective kind and whole of the work shall be of the highest class,
well finished and of approved design and make.
The draw out mechanism in respect of draw out relays should be smooth and
convenient so as to give adequate service during their use.
4.2
DEPARTURE FROM THE SPECIFICATION:
Should the tenderer wish to depart from the provisions of this specification either on
account of manufacturing practice or for any other reasons, he will draw specific
attention to the proposed points of departure on the prescribed Performa (enclosed at
annexure-B) in his tender and submit such full information, drawings and
specifications as will enable the merit of his proposal to be appreciated.
In the event of contractor drawings, specification and tables etc. disagreeing with this
specification during the execution of the contract, this specification shall be held
binding unless the departures have been fully recorded as required above.
4.3.
TESTING EQUIPMENT AND TESTING FACILITIES ON THE RELAYS:
The tenderer shall recommend suitable testing equipment (alongwith quantity)
required for field testing of relays offered against this specification. The actual quantity
to be ordered shall be determined by the Purchaser.
Also adequate testing facilities should be provided on the relay so as to test them
without the necessity of their removal or making any extra connections. The Bidder
will clearly indicate the testing procedure to be followed in respect of relays offered.
4.4
Guaranteed test sheets as per Annexure-A shall be submitted by the tenderer.
Relevant literature shall be supplied along with the bid for proper appreciation of the
offered equipment.
4.5
SUPERVISORY SERVICES:
The tenderer shall offer supervisory services for testing & commissioning of relays
included in the specification. The tenderer shall quote their rates on diem basis
category-wise with their terms & conditions. The rates quoted should be valid for at
least three years form the date of receipt of equipment by us.
4.6
TRANINING OF PERSONNEL:
The contractor shall arrange the two session of training free of cost for two days each
at two different locations of HVPNL site for 5 nos. technicians & 5 nos. Engineers in
each session. The training shall include operation, testing and commissioning of
relays, covering training in detecting faults in relays, complete explanation of the
schematic wiring and wiring schedule of the relays/scheme together with full
understanding regarding the functional modules of the relays/scheme. The
engineers/technicians shall also be provided with relay/scheme guides/instruction
manuals covering drawings of functional modules of relays/schemes.
5.0
GENERAL REQUIREMENTS OF RELAYS:
The Distance Protection relays shall conform to the requirements of IS:3231/IEC60255/IEC 61000 or other applicable standards. Distance Protection Relays shall be
suitable for flush or semi-flush mounting on the front with connections from the rear.
Distance Protection 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.
Distance Protection relays 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.
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For numerical Distance Protection relays, the scope shall include the
following:
a) 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.
b) The relay shall have suitable communication facility for future connectivity to
SCADA. The relay shall be capable of supporting IEC 61850 protocol (with fibre
optical port) and shall be compatible with existing SAS (may be of other make).
c) Numerical relays should have clock (Real Time Clock) with inbuilt battery back up
having life span of about 10 years.
d) Numerical relays shall have adequate no. of output contacts and LEDs to meet the
specification / Scheme requirement. All numerical relays shall be supplied preconfigured as per specification / scheme requirements / approved drgs.
5.1
GENERAL TECHNICAL
PROTECTION RELAYS:-
REQIREMENTS
OF
NUMERICAL
DISTANCE
5.1.1 PROTECTION SCHEME FOR LINES:
A)
NON-SWITCHED DISTANCE PROTECTION [FOR 220 kV LINES]:
The scheme shall:i)
be numerical & modular in construction. Relay shall have continuous self
monitoring& diagnostic feature.
ii)
have high speed non-switched distance relays for three phase systems to
clear all type of line faults within the set reach of the relay.
iii)
It should cover at least line sections completely with 20% in hand margin.
iv)
measure all type of faults without the need to switch the measuring
elements to the faulty phase or phases. Zone switching to extend the reach
of the measuring elements is not allowed. The reach of each zone shall be
independently & individually adjustable and shall have setting in steps of
1%. Memory circuits with defined characteristics shall be provided in all
three phases to ensure correct operation during close-up 3 phase faults
and other adverse conditions.
v)
have a max. operating time up-to trip impulse to circuit breaker (complete
protection time including applicable carrier & trip relay time) under source to
line impedance ratios (SIR) under all possible combinations of fault with PT
being used on the line (with all filters included) at 50% of zone-1 reach :
for SIR 0.01-4:as 40 ms at nearest end & 60 ms at other end of line.
for SIR 4-15 :as 45 ms at nearest end & 65 ms at other end of line.
(carrier transmission time is taken as 20 ms provided that any reduction in
carrier time shall be directly reflected as reduction in maximum operating
time).
vi)
have stepped time-distance characteristics and shall have at least four
independently variable time graded distance protection zones to cover two
adjacent line sections out of which Zone-1, 2 & 3 should be selectable in
forward direction and Zone-4 should be selectable in reverse direction.
vii)
The relay shall have mho or quadrilateral or other suitably shaped
characteristics for zone-1, 2, 3 & 4. The relay shall have an adjustable
characteristics angle setting range of 30 - 85 degree or shall have
independent resistance(R) & reactance(X) setting.
viii)
ensure that this long coverage is consistent with limitations imposed by
heavy loading and sound phase component of fault current. If the
characteristics of starting relays are such that it cannot pick-up because of
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very low in-feed, under-voltage relays may also be used as supplementary
relays.
ix)
have two independent continuously variable time setting range of 0-3
seconds for zone-2 and 0-5 seconds for zone-3 & 4.
x)
have a maximum resetting time of less than 35milli-seconds.
xi)
have facilities for offset features with adjustable 10-20% of Zone-3 setting.
xii)
have residual compensation variable from 30-150%.
xiii)
operate instantaneously when circuit breaker is closed to zero-volt 3-phase
fault i.e SOTF (Switch On To Fault).
xiv) be suitable for single & three phase tripping.
xv)
have a continuous current rating of two times of rated current. The voltage
circuit shall be capable of operation at 1.2 times rated voltage. The relay
shall also be capable of carrying a high short time current of 80 times rated
current without damage for a period of 1 sec.
xvi) be selective between internal and external faults.
xvii) have adequate contacts to meet the complete scheme requirements & if
required incorporate three separate high speed self reset trip relays for
single phase faults and a fourth high speed trip relay for multi-phase faults.
xviii) have suitable number of potential free contacts. Multiplication relays, if
required, shall be provided for Carrier aided features, Auto reclosing, Event
Logger, Disturbance recorder & Data acquisition system.
xix) include power swing blocking protection which shall
a1)
be of triple pole type
a2)
have suitable setting range to encircle the distance protection described
above.
a3)
have a continuously adjustable time delay on pick up of setting range
0-2seconds.
a4)
block tripping during power swing conditions.
a5)
be of numerical type
xx)
include fuse failure protection which shall
a1)
monitor all the three fuses of PTs/CVTs and associated cable against open
circuit.
a2)
inhibit trip circuits on operation and initiate annunciation.
a3)
remain inoperative for system earth faults.
a4)
be of numerical type.
xxi) be wired for carrier inter-tripping (PUR/POR) & carrier blocking features
selectable at site.
xxii) be suitable for 1 Amp. rated CT secondary, 110V (phase to phase ) VT
supply and 220 VDC supply. Mode of conversation of DC supply from 220
V DC to the voltage level required for their scheme may be mentioned in
detail. Requirement of CTs & VTs for the satisfactory working of the
scheme may also be indicated in the tender.
xxiii) The relay shall be suitable for series compensated line and must have a
current reversal guard feature.
xxiv) The Scheme shall have in-built features of broken conductor detection,
distance to fault locator, disturbance recorder and event logger.
For disturbance recorder and event logger features, it shall have 8 analog
and 32 digital channels (out of which at least 16 shall be external digital
inputs). It shall have its own time generator and the clock of the time
generator shall be such that the drift is limited to +0.5 seconds/day, if
allowed to run without synchronization. Further, it shall have facility to
synchronize its time generator from Time Synchronization Equipment
having output of following types.
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
a)
b)
c)
xxv)
xxvi)
Voltage signal: (0-5V continuously settable, with 50m Sec. minimum pulse
duration)
 Potential free contact (Minimum pulse duration of 50 m Sec.)
 IRIG-B
 RS232C
The recorder shall give alarm in case of absence of synchronizing pulse
within specified time.
The disturbance recorder shall meet the following requirements:
 The frequency response shall be 5 Hz on lower side and 250 Hz or better
on upper side.
 Scan rate shall be 1000 Hz/Channel or better.
 Pre–fault time shall not be less than 100 milliseconds and the post fault
time shall not be less than 2 seconds (adjustable). If another system
disturbance occurs during one post-fault run time, the recorder shall also
be able to record the same. However, the total memory of acquisition unit
shall not be less than 5.0 seconds.
The event logger shall meet the following requirements:
 The time resolution shall be 1 milli second.
 Cope with up to 40 changes in any one 10 milli seconds interval.
 The date and time should be printed to the nearest 1 milli second followed
by a message describing the point which has operated.
 Events occurring whilst a previous event is in process of being printed are to
be stored to await printing. Over 100 such events must be stored.
The distance to fault locator shall meet the following requirements:
 Be On-Line type and suitable for breaker operating time of 2 cycles.
 The display shall be directly in percent of line length or kilometers without
requiring any further calculations.
 Shall have an accuracy of 3% or better for the typical conditions defined for
operating timings measurement of distance relays. The above accuracy
should not be impaired by presence of remote end infeed, predominant D.C.
component in fault current, high fault arc resistance, severe CVT transients.
 Shall have parallel line mutual zero sequence compensation feature.
FEEDER OVER LOAD ALARM PROTECTION:- A single pole over current
relay for the purpose of monitoring the load flow on feeders to sound an
alarm whenever load flow in the line exceeds the setting for a given period
of time to draw the operator's attention. The relay shall have CONTINUOUS
VARIABLE setting range of 50-200% of 1 Amp. and shall be supplemented
by a continuously variable timer of 1 to 10 seconds.
AUTO RECLOSING SCHEME:a) The protective scheme shall incorporate the necessary equipment to impart
auto-reclosing impulse to the circuit breaker when it has tripped either due
to the operation of the line protection scheme in the first zone or the
accelerated operation of it with the help of carrier equipment. No
auto-reclosing impulse shall be transmitted in the event of a fault cleared by
the 2nd, 3rd&4thzone of line protection scheme. Auto-reclosing will also be
blocked in case the circuit breaker is tripped manually.
b) The provision of single & three phase auto-reclosing is to be made on 220
kV feeders.
c) The reclosing scheme shall automatically reset after any successful
reclosure and shall lock out in case the circuit breaker trips immediately
after reclosure. Also the (reclosing) scheme shall not initiate reclosing upon
an unsuccessful attempt to manually close circuit breaker.
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d) There shall be clear target indications for successful & un-successful
operation.
e) The auto-reclosing scheme shall have continuously variable dead time setting
range of 0.1-2secs for single phase reclosing as well as for three phase
reclosing. The scheme shall have continuously variable reclaim time setting
range of 5-300secs.
xxvii)
CHECK SYNCHRONIZING & DEAD LINE CHARGING SCHEME:a) Check synchronizing relay and dead line charging equipment shall be
provided for 220 kV feeder to compare the phase angle & frequency of the
`incoming' and `running' supplies and allow the auto-reclose to take place
only if the said parameters are within the permissible limits. The dead line
charging equipment shall ensure auto-reclosing a circuit breaker on to a
`dead' line leaving the checking of synchronism of two supplies to the other
end of it.
b) Synchronizing check relay shall permit breakers to close after checking the
requirements of synchronizing of incoming and running supply. The phase
angle setting shall not exceed 35 degree and have voltage difference setting
not exceeding 10%. This relay shall have a response time of less than 200
milliseconds when the two system conditions are met within preset limits and
with the timer disconnected. The relay shall have a continuously adjustable
time setting range of 0.5-3secs.
xxviii)
The relay shall be equipped with minimum 10 Nos. configurable LEDs
(Opto) for external signal only.
xxix)
The relay shall have both quadrilateral and mho measuring technique.
Note:-
The Feeder over Load Alarm, Auto reclosing scheme, Check Synchronizing
& Dead Line Charging Scheme shall be in-built with numerical distance
protection relay with the above mentioned specification requirement.
B) NON-SWITCHED DISTANCE PROTECTION SCHEME [FOR 132kV & 66kV LINES]:
The main protection scheme for these lines will be distance scheme working on
definite distance measuring principle both for phase & earth faults. The scheme
shall:i)
be numerical & modular in construction. Relay shall have continuous self
monitoring& diagnostic feature.
ii)
have high speed non-switched distance relays for three phase systems
to clear all type of line faults within the set reach of the relay.
iii)
It should cover at least line sections completely with 20% in hand
margin.
iv)
measure all type of faults without the need to switch the measuring elements
to the faulty phase or phases. Zone switching to extend the reach of the
measuring elements is not allowed. The reach of each zone shall be independently & individually adjustable and shall have setting in steps of 1%.
Memory circuits with defined characteristics shall be provided in all three
phases to ensure correct operation during close-up 3 phase faults and other
adverse conditions.
v)
have a max. operating time up-to trip impulse to circuit breaker (complete
protection time including trip relay time) under source to line impedance ratios
(SIR) :0.01-4 as 50ms under all possible combinations of fault at 50% of
zone-1 reach.
vi)
have stepped time-distance characteristics and shall have at least four
independently variable time graded distance protection zones to cover two
adjacent line sections out of which Zone-1, 2 & 3 should be selectable in
forward direction and Zone-4 should be selectable in reverse direction.
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vii)
viii)
ix)
x)
xi)
xii)
xiii)
xiv)
xv)
xvi)
xvii)
xviii)
a1)
a2)
a3)
a4)
a5)
xix)
a1)
a2)
a3)
a4)
xx)
xxi)
xxii)
The relay shall have mho or quadrilateral or other suitably shaped
characteristics for zone-1,2, 3 & 4. The relay shall have an adjustable
characteristics angle setting range of 30 - 85 degree or shall have
independent resistance(R) & reactance(X) setting.
ensure that this long coverage is consistent with limitations imposed by
heavy loading and sound phase component of fault current. If the
characteristics of starting relays are such that it cannot pick-up because of
very low in-feed, under-voltage relays may also be used as supplementary
relays.
have two independent continuously variable time setting range of 0-3
seconds for zone-2 and 0-5 seconds for zone-3& 4.
have a maximum resetting time of less than 55milli-seconds (including the
resetting time of trip relays).
have facilities for offset features with adjustable 10-20% of Zone-3 setting.
For correct measurement of earth faults necessary equipment for residual
compensation shall be included. It shall have residual compensation
variable from 30-150%.
operate instantaneously when circuit breaker is closed to zero-volt 3 phase
fault.
be suitable for three phase tripping.
have a continuous current rating of two times of rated current. The voltage
circuit shall be capable of operation at 1.2 times rated voltage. The relay
shall also be capable of carrying a high short time current of 80 times rated
current without damage for a period of 1 sec.
have adequate contacts to meet the complete scheme requirements & if
required incorporate separate high speed self reset trip relays.
have suitable number of potential free contacts. Multiplication relays, if
required, shall be provided for Event Logger, Disturbance recorder & Data
acquisition system.
include power swing blocking protection which shall
be of triple pole type
have suitable setting range to encircle the distance protection described
above.
have a continuously adjustable time delay on pick up of setting range
0-2seconds.
block tripping during power swing conditions.
be of numerical type
include fuse failure protection which shall
monitor all the three fuses of PTs/CVTs and associated cable against
open circuit.
inhibit trip circuits on operation and initiate annunciation.
remain inoperative for system earth faults.
be of numerical type.
be suitable for 1 Amp. rated CT secondary, 110V (phase to phase ) VT
supply and 220 VDC supply. Mode of conversion of DC supply from 220V
DC to the voltage level required for their scheme may be mentioned in
detail. Requirement of CTs & VTs for the satisfactory working of the
scheme may also be indicated in the tender.
The Scheme shall have in-built features of broken conductor detection,
distance to fault locator, disturbance recorder and event logger.
The relay shall be equipped with minimum 10 Nos. configurable LEDs
(Opto) for external signal only.
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5.1.2 SOFTWARE:
One licensed copy of software with each type of relay at each S/Stn. of HVPNL
where relays has to be supplied / installed with two licensed copy of software for
each type of relay to Design office of HVPNL shall be supplied.
6.0
6.1
TESTS :
TYPE TESTS :
The equipment offered should be type tested. Type test report of similar
equipment 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 ISS3231(1965)/equivalent IEC from Govt./ Govt. approved test house & shall be
submitted along with bid:
a)
Insulation tests as per IEC 60255-5.
b)
High frequency disturbance test as per IEC 60255-22-1 with its latest
amendments (applicable for Numerical relays)
c)
Fast transient test as per IEC 1000-4, Level-III (not applicable for
electromechanical relays)
d)
Relay characteristics, performance and accuracy test as per IEC 60255.
e)
Tests for thermal and mechanical requirements as per IEC 60255-6
f)
g)
h)
Tests for rated burden as per IEC 60255-6
Contact performance test as per IEC 60255-23 &IEC 60255-13.
Conformance tests as per IEC 61850.
The above tests shall be supplied as per the applicability of the relays alongwith
bid. The remaining type test reports of above relays shall be submitted by the
successful bidder within three months of placement of order. These type test
reports will also be from Govt./ Govt. approved test house & should not be more
than seven years old, reckoned from the date of placement of order. The failure
to do so will be considered as a breach of contract.
6.2
6.2.1
ROUTINE TESTS:
All equipment shall be subject to routine tests according to the relevant standards
and to such other tests as may be required to ensure that all equipment is
satisfactory and in accordance with this specification. The Purchaser reserves the
right to witness all the tests, unless dispensed with in writing by the Purchaser.
6.3
6.3.1
ACCEPTANCE TESTS:
The Supplier shall give sufficient advance intimation (at least 15 days notice for
Indian Supplier and 30 days notice for Foreign Supplier) to the Purchaser to
enable him to depute his representative for witnessing the tests.
7.0
7.1
DOCUMENTATION :
All drawings shall conform to international standards organization (ISO) `A' series
of drawing sheet/Indian Standards Specification IS:11065. All drawings shall be in
ink and suitable for microfilming / digitization / scanning, etc for archive purposes.
If drawings are computerized than all drawings shall be nicely printed. All
dimensions and data shall be in S.I. Units.
7.2
The successful Supplier shall submit one complete master set of
instruction manual/Literature of Relays alongwith four copies of sample
connection diagram for all the Circuits/Items with in a week of placement of
order to the Design Directorate for checking and approval. The Purchaser
shall communicate his comments/approval on the drawings to the Supplier within
two weeks of the date of receipt of above drawings. The Supplier shall, if
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7.3
7.4
7.5
NOTE:-
necessary, modify the drawings and resubmit four copies of the modified
drawings for Purchaser's approval within two weeks from the date of Purchaser's
comments. After receipt of Purchaser's approval, the Supplier shall submit 10
prints of final G.A. and schematic drawings for each Item and ten (10) copies of
instruction manuals for each Item alongwith Four (4) good quality softcopy (CDs)
of the drawings and instruction manuals.
Each set of drawings and each set of instruction manuals shall be bound
separately. The final documents shall be supplied before dispatch of
equipment otherwise the supply shall not be considered complete.
The manufacturing of the equipment shall be strictly in accordance with approved
drawings and no deviation shall be permitted without the written approval of the
Purchaser.
All manufacturing & fabrication work in connection with the
equipment prior to the approval of the drawings shall be at the Supplier's risk.
The Supplier shall furnish specified no. of nicely printed and bound volumes of
the instruction manuals in English language, prior to the dispatch of the
equipment. The instruction manual shall contain step by step instructions for all
operational & maintenance requirements and shall include the following aspects.
i)
Storage for prolonged duration.
ii)
Unpacking.
iii)
Erection.
iv)
Handling at site.
v)
Pre commissioning tests.
vi)
Operating procedures.
vii)
Maintenance procedure.
viii)
Precautions to be taken during operation& maintenance work.
ix)
Catalogue numbers of all the components liable to be replaced.
x)
Internal wiring diagrams of the relays.
One set of all the approved drawings and instruction manual/Literature will
be supplied alongwith each Relay otherwise the supply will not be
considered as complete supply.
Approval of drawings by Purchaser shall not relieve the Supplier of his
responsibility and liability for ensuring correctness & correct interpretation of the
latest revision of applicable standards, rules & codes of practices. The
equipment shall conform in all respects to high standards of engineering, design,
workmanship and latest revisions of relevant standards at the time of ordering.
In case the equipment offered by the Supplier does not meet with the
requirements of technical specification, the offer of the firm shall not be
considered.
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ANNEXURE-A
GUARANTED TECHNICAL PARTICULARS
A)
NUMERICAL DISTANCE PROTECTION RELAY.
1.
2.
3.
Make & Model
Type designation
Whether comply to Principle Technical Para meters as per technical
specifications.
Whether Numerical measurement.
Auxiliary DC Voltage with permissible tolerance.
CT input, specify whether selectable at site.
PT input Permissible over load.
Type and no. of measuring elements.
No. of zones.
Type and no. of starting units.
Minimum operating current for each element.
Max. Reactive reach range
i) First zone element
4.
5.
6.
7.
8.
9.
10.
11.
12.
ii)
iii)
iv)
v)
vi)
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
Second zone element
Third zone element
Fourth (Reverse) zone element
Power Swing
Load Encroachment
Max. Resistive reach range
First zone element
i) Second zone element
ii) Third zone element
iii) Fourth (Reverse) zone element
iv) Power Swing
v) Load Encroachment
Minimum and maximum line length in Km for which the fault can be detected.
Reset ratio for Distance Protection function
Reset ratio for SOTF
Type of power swing blocking (state type and characteristic)
Operating time range
i) First zone
ii) Second zone
iii) Third zone
iv) PS Blocking timer
v) PS De blocking timer
Relay characteristics angle range for
i) Measuring units
ii) Starting units
iii) Power swing blocking relays
Whether suitable for any communication scheme
Have all carrier auxiliary relays been provided (give technical particulars)
No. of Binary Inputs and their ratings.
No. of Binary outputs and their ratings.
Tripping time carrier (maximum and minimum)
Type of auto re-close scheme and time range for
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i) Dead time
ii) Reclaim time
VA burden of each phase relay.
i) Current circuit
ii) Potential circuit
iii) DC circuits
Whether continuous self monitoring and diagnostic feature is available.
Relay characteristics available
Change in characteristics possible
Burden on CT and VT per phase.
i) No. of tripping relays provided
ii) No. of NO/NC contacts of each tripping relays suitable for use in auto
reclose scheme.
All aux. relays for the scheme provided.
All external resistors as required provided.
Carrier ON/OFF provided.
Auto re-closure scheme with check relay as per specification.
Measurements of functions list here.
No. of Disturbance Records and their different time periods.
Manual online testing facility provided through test plug without isolation of any
circuit from panel TB.
Communication /interface Protocols
Time Synchronization
Is the scheme exactly as per specification? If not list out deviations.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
(i)
1.
2.
3.
4.
5.
6.
7.
(ii)
1.
2.
3.
4.
5.
6.
7.
8.
9.
(iii)
CHECK SYNCHRONIZING RELAY (In-built in Distance Protection Relay):
Make.
Type.
Rating ( V, ac )
Aux. Voltage ( V, dc )
Permissible voltage difference (%)
Permissible phase angle difference (degree)
Response time of relay (without timer)( m Sec )
AUTO RECLOSING (In-built in Distance Protection Relay):
Make.
Type.
Multi shot or single shot.
Rating (V, dc)
Suitable for 1 & 3 phase.
Dead time setting range (Sec.)
Reclaim time setting range (sec.)
Four position selector switch provided.
Alarm contacts provided for `Auto-reclosed',
`Reclosure unsuccessful'.
Feeder OVER LOAD ALARM PROTECTION (In-built in Distance Protection Relay).
1.
Make.
2.
Type.
3.
Rated Voltage.
4.
Setting Ranges.
5.
Operating time.
6.
Setting range continuously variable.
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ANNEXURE-B
SCHEDULE OF DEVIATIONS FROM THE SPECIFICATION
In the table the Bidder shall set out all deviations clause by clause from the specification of
the equipment offered. The bid shall be deemed to conform to Purchaser's specification in all
respects unless specifically mentioned in this table.
Sr.No.
------
Clause No.
----------
Detailed Deviations with justification.
--------------------------------------
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