A
PART - I
CL. NO.
RFI SPECIFICATION
1.0
1.1
OBJECTIVE :
The objective of this Specification is to guide the vendor in submitting a
quotation which will fulfill all the technical / commercial requirements of the
Purchaser.
This Specification will also act as conditions of supply for all such technical /
other aspects about which the vendor remains silent in his quotation.
1.2
2.0
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.6.1
3.6.2
4.0
4.1
4.2
4.3
4.4
INTENDED PURPOSE OF THE EQUIPMENT
33 KV Ring Main HT/LT Switch Gear for ensuring a stable and uninterrupted
power supply system.
IMPORTANT GUIDELINES FOR VENDORS :
THE BIDDER SHALL HAVE VALID TYPE TEST CERTIFICATES FROM
CPRI, CONDUCTED WITHIN LAST 5 YEARS, FOR SHORT CIRCUIT,
ENCLOSURE DEGREE OF PROTECTION AND ANY OTHER TEST
REQUIRED AS PER IS: 8623.
INCOMPLETE BID i.e, WITHOUT PROPER TECHNICAL DETAILS OR
WITHOUT PRICE BID, WILL BE REJECTED OUTRIGHT.
THE PRICE BID & THE TECHNICAL BID SHOULD BE SUBMITTED IN
SEPARATE SEALED COVERS AND SHOULD BE IDENTICAL EXCEPT
THAT THE PRICE SHALL BE LEFT BLANK IN TECHNICAL BID.
COST MUST BE INDICATED BY TENDERER AGAINST EACH OF THE
ITEMS SCOPE OF SUPPLY" AS PER ENCLOSED ANNEXURE-II IN PRICE
BID (NOT IN TECH. BID).
TENDERER MUST FURNISH COMPLIANCE STATEMENT AGAINST EACH
OF THE CLAUSE OF TECHNICAL SPECIFICATION AND GENERAL
SPECIFICATION.
TENDERER MUST SUBMIT THE FOLLOWING DOCUMENTS WITH THE
TECH. BID.
List of users of similar equipment manufactured & supplied during last 10
years with Postal address, Fax No, Telephone No, & name of contact person
of the users.
Performance certificates issued by a few reputed users of similar
EQUIPMENT.
SCOPE OF CONTRACT :
Design, manufacture & supply of the equipment as specified.
The equipment should be complete in all respect for intended purpose with
desired / specified level of performance.
To ensure completeness of supply, vendor should include in the scope of
supply, all auxiliary items which are necessary for satisfactory running of
equipment, though not included in this specification
Quality and strength of material used in manufacturing the equipment should
be as per applicable code of practice and regulation. Vendor must confirm this
aspect in the offer.
4.5
4.6
4.7
5.0
5.1
5.2
6.0
7.0
8.0
9.0
9.1
9.1.1
9.1.2
9.2
10.0
10.1
10.2
11.0
For comparison purpose of cost bid, tenderer will give total cost of all the
items which makes offer complete as per Tender Enquiry ( tendered
specification). However, spares for 2 yrs normal maintanence should be kept
out of total cost and will not be co
In case tenderer is quoting any optional item which is not essential, then it
should be kept out of total cost.
While indicating total cost, the tenderer will take all the conditions into
consideration, which has to fulfill erection & commissioning, including training,
deputation of engineers etc. nothing should be left vague.
INSPECTION AT FIRMS PREMISES:
Vendor should provide all test & guarantee certificates for bought out & own
manufactured items prior to pre-despatch inspection.
Pre-despatch inspection will be carried out by RFI representative for all the
items including standard & optional items.
Supervision of Erection at site
Erection at site will be done by the supplier's engineers as mentioned at
"Terms
&
Conditions"
in Part-II.
Commissioning of the machine at site
Commissioning & testing of the equipment to its desired capacity and
complete satisfaction of the perchaser will be done by the supplier's enginner
as mentioned at "Terms & Conditions"
Training :
Training to purchaser's personnel in operation, programming & maintenance
of the equipment as mentioned at "Terms & Conditions" in Part-II.
OPTIONAL ITEMS.
SPARES FOR 2 YEARS NORMAL RUNNING MAINTENANCE :
The list of spares should indicate unit price, weight & quantity recommended
for purchase against each item separately.
The list should be prepared for safer working and trouble free running of the
equipment for 2 years.
Other Cost / Charges of elements & services, if any (specify detail) which are
not covered in the technical specification but are essentially required for the
efficient operation & guarantee of the specified output of the machine as per
TE specification.
DESIGN PARAMETERS :
Design parameters should ensure durability, accuracy, smooth working &
easy maintenance of the equipment.
The design should incorporate adequate factors of safety as per applicable
codes
of practice
and regulations.
:
BOUGHT
OUT ITEMS
Bought out items should be provided from reputed manufacturers only.
Vendor should mention Part No. / nomenclature of the item along-with Postal
Address, Fax No. & Telephone No. of manufacturer / supplier in the offer.
12.0
SERVICE BACK UP :
Full service backup including repairing / reconditioning of supplied equipment
should be available for at least 10 years from date of commissioning.
B
PART - II
RFI SPECN.
TECHNICAL SPECIFICATION FOR PROCUREMENT OF
ELECTRICAL SUBSTATION POWER EQUIPMENTS
SL. NO.
1
2
3
4
5
6
Item Description & Unit Quantity.
33KV, 630A, 30KA to 50KA for 1 Sec, Copper Busbar Indoor HT switch board
comprising of 1 No. Incomer, 1No. Tie Feeder, and 3 Nos. Outgoing VCB
including Neumerical Relay with O/C, E/F, S/C, REF, different protection
alongwith U/V and supervision relay. Al
2000KVA, 33/0.433KV ONAN 3 phase 50Hz. Dyn-11 copper wound energy
efficient power transformer with Off load Tap changer and other accessories
as specified. : 3 Nos.
415V, 30KA to 50KA Indoor typetype Copper Busbar LT switcboard
comprising 3 Nos. incomer ACB EDO, 3200A capacity, 2 Nos. Bus coupler
ACB EDO of 3200A capacity and outgoing ACB EDO of total 36 Nos. 1000A
capacity each including numerical base instanteneous
415V, 3phase, 50Hz. 2x375 KVR capacity with Intelligent Power Factor
Correction (IPFC) panel including all accessories as specified. : 3 Nos.
110V DC 60AH, lead acid (maintenance free) battery bank with epoxy coated
metal stand with all accessories as specified. : 2 Sets.
110V DC 15A continuously rated floate cum Boost Charger for above battery
load with all accessories as specified. : 2 Sets.
7
33KV(E) grade 3 core, AL, 150mm2, XLPE power cable laying under ground
and connection complete from FTI Sub-Station to proposed Sub-Station and
8
1.1KV grade 3.5 core 400mm , XLPE power cables for connection between
proposed sub station to different production and related section using over
head cable tray/under ground as per site condition all as specified. : 14000
33KV grade cable termination kits for straight & end termination. : As
resurired.
1.1KV grade cable termination kits for straight & end termination. : As
required.
Sub-Station earthing and lighting protection equipment as required. : As
required.
Dismantling of existing LT power cable as per requirement. : As required.
9
10
11
12
2
TECHNICAL SPECIFICATION FOR PROCUREMENT OF ELECTRICAL SUB
STATION POWER EQUIPMENTS AT RFI
LIST OF APPROVED VENDERS
SL. NO.
1
ITEM DESCRIPTION & MAKE
33KV Indoor VCB with panel : SIEMEN’S/BHEL/ABB/SCHNEIDER.
2
3
4
5
6
7
8
9
SL. NO.
(a)
(b)
(c)
(d)
Power
distribution
Transformer
:
SIEMEN’S/BHEL/ABB/KIRLOSKAR/SCHNEIDER
415V Indoor ACB with panel : SIEMEN’S/L&T/GE/ABB
Numerical Protective Relay : SIEMEN’S/BHEL/ABB/SCHNEIDER
HT and LT power cable : HAVELL’S/NICCO/PLAZA/CRYSTAL
LT control cable (copper) : FINOLEX/HAVELL’S/NICCO/TORRENT
Battery and Battery charger : EXIDE/PANASONIC/SABNIFE/CALDYNE
Cable termination kit : RAYCHEM/DENSON/ M SEAL
Capacitor with panel : SIEMENS’S/L&T
SPECIFICATION OF 5 PANEL 33 KV VACUUM SWITCH BOARD
DESCRIPTION
One incoming panel with separate (detach from incoming VCB panel) draw
out type PT chamber
One Tie panel to inter linking with existing 33 KV sub-station
Three Outgoing panel for Transformers
Sheet steel enclosed dust and vermin proof, compartmentalized, free standing
floor mounted cubicle panel with trolley mounted withdrawal type vacuum
circuit breaker air insulated PVC sleeved copper bus-bar as per rating of
feeder with continuous copper ea
SPECIFICATION FOR 33 KV VACCUM CIRCUIT BREAKER
1
2
3
4
5
6
7
(a)
(b)
8
9
Draw out type manual/motor operated spring charged stored energy operating
mechanism. Spring charging motor 230 V, AC single phase 50 HZ. Closing
and shunt trip coils operated at 110 V, DC, local/remote control, detachable
M.S. plate at the bottom for cab
Voltage grade : 36 KV
Rated current : 630 Amps
Making current : 63 KA
Braking current : 30KA to 50 KA
Short time current : 30KA to 50 KA for 1 sec
Insulation level : 70/170 KV
CT ------ Three nos. single phase resin cast CTs of dual core and of ratio
200/150/5 A for each Incoming & 100/50/5 A for Outgoing
Core I – 15 VA, class – 1 accuracy for metering,
Core II – 15 VA, class – 5P10 accuracy for protection
PT ----- Three nos. single phase resin cast draw out type PTs of 100 VA
burden, PT ratio 33 KV/√3 to 110 V/√3, class I accuracy with HT/LT protection
fuses.
Auxiliary contacts ------ 4 NO + 4NC spare auxiliary contacts, wired and
available exclusively for external use.
10
Metering panel
(a)
For Incoming panel ----------- i) digital KWH meter, ii) digital frequency meter,
iii) digital P.F meter, iv) digital Volt meter, v) digital Ammeter,
For Tie feeder panel & outgoing panel ------ i) digital KWH meter, ii) digital
Volt meter, iii) digital Ammeter, iv) separate alarm circuit for Transformer
safety devices.
(b)
11
12
13
14
Low voltage compartment ----- Can be of manufacturer's own design but
should be as per the latest trend and standards in this regard in the industry.
But it should have sufficient space for mounting of relays and instruments and
should have enough clear s
Wiring: All wiring shall be done by adopting best workmanship practices
prevalent in the industry and using colour scheme as per IS/IEC with following
minimum cross
section---– i)The
Control,
Interlocks
-- 1.5
Climatic
conditions
switch
board and
will Indication
be installed
in sq.
an mm
indoor
substation with IEC 694.
Paint finish ----- All steel parts are to be protected against corrosion by
applying a coating of zinc phosphate. The final color shall be RAL 7044.
Large surface areas such as doors and end panels shall have their visible
surfaces coated with a scratch p
15
Protection category
(a)
(b)
(c)
16
High voltage compartments : IP4X or better.
Drive mechanism compartment : IP 3X
LV compartment : IP 3X
The vacuum circuit breaker shall form a completely independent inter
changeable module.
SL. NO.
1
2
3
4
5
6
7
(a)
(b)
8
9
10
11
(a)
(b)
12
13
14
15
16
(a)
(b)
SPECIFICATION FOR TRANSFORMER
DESCRIPTION
Type : 3 phases, 50 Hz, Oil immersed, naturally cooled, Core type, Double
Wound.
Standard : IS: 2026
Service : Indoor
KVA rating : 2000 KVA
No load voltage ratio in KVA : 33/0.433
Winding material : Copper
Connection
HV winding : Delta
LV winding : Star
Vector group : DYn11
Tapping on HV side : -7.5% to +7.5% @2.5%
Type of tap changer : Off circuit
Temp. Rise in degree C
Oil (measured by Thermometer) : 50
Winding (measured by resistance method) : 55
No load loss : Less than IS specification shall be preferable.
Full load loss at 75 degree C : Less than IS specification shall be
preferable.
Impedance : 6% (IS Tolerance)
Cooling : ONAN
Termination
HV : Air insulated termination box.
LV : Air insulated termination box.
(c)
17
18
19
(I)
(ii)
(iii)
(iv)
(v)
20
SL. NO.
1
2
3
4
5
6
7
8
9
NEUTRAL : Available LV side.
Neutral CT on LV side : 1000/500/5A with Burden 10VA and cl. 5p10.
Paint : Enamel; shade 631 of IS:5
ACCESSORIES
Oil temp. Indicator with A/T contacts.
Winding temp. Indicator with A/T contacts.
Double float Buchholz relay.
Marshalling box
Magnetic oil level gauge with low level alarm contact.
STANDARD FITTINGS
Monogram plate : Cover lifting lugs
Conservator with sump & drain plug : Jacking lugs
Oil filling hole with flange & bolted cover : Top filter valve
Prismatic oil level gauge : Drain cum filter valve
Dehydrating silica gel breather with oil seal : Earthing boss
Thermometer pocket : Storage & Inspection plate
Air release plug : Skid type under base
Inspection cover : Bi-directional flanged rollers
Lifting lugs : Explosion vent with single diaphragm
SPECIFICATION FOR 415 V SWITCH BOARDS
DESCRIPTION
Switchboard shall be constructed with bolted structures. Welded or riveted
structure should not be used for construction of the switchboard.
ACB feeders shall be housed in single front draw out design. The ACB
feeders shall be mounted in two tier design. The ACB feeders and other
feeders front side should be flushed in such a manner that the front line of the
switchboard comes in one line.
The panels shall have non-segregated phase Copper Bus-bars of current
density 1.6 amps/ sq.mm suitably provided with black heat shrunk PVC
sleeves. Bus-bars shall be mounted on supports molded out of glass
reinforced thermosetting plastic. The switchboard
All feeders shall be suitable for cable entry from the bottom.
The switchboard shall be painted with shade no. 631 of IS :5 with epoxy
based powder coating paint having thickness 40-60 micron. The sheet steel
shall be treated with 9 tank process.
Horizontal earth bar will be 9.5X50 sq.mm. aluminum. In cable alley a vertical
earth bus of suitable size shall be provided with proper holes, for connecting
the 4th core of the cables.
Control bus bar of size 12X3 mm copper shall run throughout the length of the
switch board. Single strand wires shall not be used.
All indicating lamps shall be of LED type.
Control wiring shall be done with FRLS 2.5 sq. mm. flexible copper wires with
proper ferruling and numbering.
10
11
SL. NO.
1
2
3
4
5
6
7
8
9
10
ACBs with inbuilt release shall not be considered. Bidders are requested to
submit their proposal considering microprocessor based Numerical Relay as
per the specification given.
The bidder shall have valid type test certificates from CPRI, conducted within
last 5 years, for short circuit, enclosure degree of protection and any other test
required as per IS: 8623.
SPECIFICATION FOR 415 V AIR CIRCUIT BREAKER
DESCRIPTION
ACB will be of motorized spring charging mechanism and shall be provided
Nominal system voltage : 415 volts
No. of phase : 3
System earthing : Effectively earthed system.
Type of circuit breaker : ACB (MWS)
Rated short ckt. current : 30KA to 50 KA
Rated short time current withstand capacity : 30KA to 50 KA for 1 sec
IS specification : Conforming to IEC 947/ IS13947 (part 2) 1993
Auxiliary contacts : 4NO + 4NC spare auxiliary contacts, wired and
available exclusively for external use.
The control panel of ACB along with its operating device shall project through
cutout in the door. The door cutout shall be provided with suitable gasket for
IP 54 protection.
The ACB shall be manually & electrically operated. Stored energy mechanism
shall be provided in all cases to ensure independent closing of the breaker.
SPECIFICATION OF 3 CORE 33 KV(E) 150 SQ. MM. HT CABLE
Compact circular stranded Aluminium conductor cable, XLPE insulated (dry
cure with nitrogen gas) provided with insulation screening of semi conducting
tape and copper tape over individual cores, water sellable tape and glass tape
over extruded PVC inner s
SPECIFICATION OF 3.5 CORE 1.1 KV GRADE 400 SQ. MM. LT CABLE
SL. NO.
1
2
3
XLPE insulated PVC outer sheathed cable with Aluminium conductor, PVC
inner sheath along with steel armoring, conforming to IS 7098 part- I with
amendment 1.
SPECIFICATION OF 130V, D.C. SEALED MAINTENANCE FREE BATTERY
BANK
DESCRIPTION
130 volts valve regulated Lead Acid sealed maintenance free Battery in
charged condition, complete with necessary inter connection, hardware and
rack.
The Battery container shall be of high quality polymer, Ampere Hour capacity
of the Battery is
60 AH.
The Battery shall be suitable for being boost charged to fully charged
condition from fully discharged condition within 10 hrs.
4
(a)
(b)
5
1
2
3
4
5
SL. NO.
1
2
3
4
5
6
7
8
(a)
(b)
(c)
(d)
(e)
9
10
11
12
The Battery assembly shall have a charger which shall be sized for one of the
following duty conditions whichever is higher
Off line boost charging of the Battery assembly.
On line float charging of the Battery assembly while feeding the complete DC
load.
The charger shall have 3 phases, full wave controlled Rectifier Bridge with
their protective voltage control and current control in float and boost mode
shall be done by Automatic Voltage Regulator.
OPERATION
Normal operation will require that Battery assembly will be float charged while
feeding the DC load.
In case of AC main failure, the Battery shall continue supply to the load.
The selection of boost/float charging mode shall be done manually and will be
selected by push buttons. When the charging mode is selected, the Battery
charger shall initially charge the Battery under constant current mode followed
by constant voltage mod
In the event of failure of charger feeding to the load and when Battery is boost
charged, continuity in DC supply shall be maintained from the Battery to the
load through 80% tap of the Battery.
The charger shall have facility for manual mode of operation.
SPECIFICATION FOR LT 2X375 KVR INTELLIGENT POWER FACTOR
CORRECTION PANEL FOR EACH TRANSFORMER
DESCRIPTION
Each panel consist of the followings :Capacitors type : MPP-H/MD-XL/FF conforming to IS 2834/1986, IEC 831-1
&2
Incoming should comprise one 1000A ACB for each 375KVAR capacitor bank
: 1000 amps ACB as per specification given above.
Outgoing should be as per requisite design : All contacors should be
provided as per capacity of condenser bank.
Contractor for each 50 KVR capacitor : 125 amps contractor conforming to
IS 13947 part 4/ sec-1 with ON/OFF push button.
Rated voltage : 440 V
No. phases : 3
Frequency : 50 Hz
Enclosure
Material : Sheet Steel
Enclosure frame : 9- fold profiled
Rear panel : 1.5 mm
Doors : 2.0 mm
Paint : Dip coated primed and powder coated in texture RAL 7032
Application : Indoor
Degree of protection : IP42
Ambient temp. category : 55 degree max
Losses : 2 W/KVAr
13
14
15
Mounting position : Free standing floor mounting
Safety features : Short circuit protection
Bus bars : Current density 1.6 A/sq. mm for copper and 1.0 A/sq.mm for Al
16
17
(a)
(b)
(c)
S.C. withstand : 30KA to 50 KA
Standard features
Digital power factor meter.
Digital Ammeter to measure 3 phases sequentially
Digital Voltmeter to measure 3 phases sequentially
SPECIFICATION FOR HT CABLE LAYING
Cable has to be laid directly underground and the cable laying practice must
conform to IS 1255 in all respects.
The depth of cable laying in general will be as follows
33 KV grade cable 1.2 meters minimum
1.1 KV grade cable 1.1 meter minimum
Necessary bedding below lowest layer of cable and precast concrete cable
covers for protection of top layer of the cable must be provided along the full
length of the cable. Cable routs are to be indicated with appropriate indicators
as per standard prac
The cable must pass through GI pipe of dia 150 mm for each cable with 40%
space margin, when passing across the roads or under railway line. The
length of pipe would be as per requirement.
The cable entry and exit through GI pipes will be through bell mouth or
padding of lead.
The cables can be laid in multilayer. However the width of trench of trench
must suitable so that in no case the spacing between cables can de-rate the
current rating to less than 0.9.
Cable trench must have a clearance of minimum 0.4 meter from a gas or
water main and also from communication cable. Induction influence on
sensitive control cable on account of nearly power cable should also be
checked.
All necessary tests after and before cable laying and joining gave to be done
by the bidder and the change to be included in the quotation.
Following tests are considered essential
Testing after laying - i) continuity of all the cores should be checked ii)
insulation resistance of core to earth with 500 volts megger for LT cables and
2.5/5 KV megger for HT cables. iii) insulation resistance between conductors
as above iv) checking t
Testing after jointing – insulation resistance of core to earth and between
cores with 500 volts megger for LT cables and HIPOT (high voltage test for
HT cables for 15 minutes.
Earth resistance testing - resistance of the earth pits and earthing system
should be checked. It should be less than 1 ohms.
SAFETY DURING OPERATION AND MAINTENANCE
Operator safety during operation and maintenance must be guaranteed
1
2
(I)
(ii)
3
4
5
6
7
8
9
(a)
(b)
(c)
1
2
(a)
3
4
5
6
(a)
7
(a)
(b)
1
(a)
(b)
(c)
(d)
(e)
(f)
2
2.1
(a)
(b)
(c)
(d)
3
(a)
(b)
(c)
(d)
Safety during operation
The operator must be protected against direct contact with any live parts by
complying with the requirements.
As protection against accidental contact, the requirements of IEC 64 must be
complied with.
Operation of the switch board must be possible with all front doors closed.
This includes
a) Supervision b) Switching c) That mechanical switch position indicators are
visible d) Mechanical operation e) Testing that the power has been
disconnected f) Cable testing
As protection against the effects of internal faults, a test certificate showing
compliance with IEC 298 appendix AA for at least 30KA to 50 KA (1s) must be
submitted with the offer
Each cubicle must have clearly defined mechanical operating mechanisms
which permit and indicate the following operations:
Circuit breaker ON/OFF (closed/tripped)
The front of the cubicle must be separated into two vertical sections –
Top section: Operation and mechanical indicators
bottom section : Low voltage compartment
TERMS & CONDITION
Documentation
The following shall be provided by the supplier
Foundation and Building requirements
Front view
Single line diagram
Schematic diagrams and terminal lists
Interlock drawing and auxiliary voltage distribution diagram
Operation and maintenance manuals
On site Installation
The local erection & commission includes the following
Installation and leveling of the base frame
Erection and leveling of the switchboard
Connection the switchboard earth to an existing earth mat
All electrical equipments shall be Tested at site by CESC or its authorized
vender.
Special Condition
The complete job as per scope of work and service as stated above shall be
executed by the bidder on Turn key basis.
Equipment provided must have proven track record of not less than 3 years.
Necessary proof in the form of reference list should be provided along with
the offer.
Equipment design should conform to latest international standards/regulations
in terms of manufacturing.
All jobs not included in the scope of work but considered necessary for
completeness and efficiency shall be executed by the bidder and the charge if
any to be included in the quotation.
4
C
1
2
3
4
5
Training
Supplier shall impart training to atleast 10 RFI personnel free of cost in the
field of operation and maintenance of the project/equipment before handing
over.
TECHNO-COMMERCIAL TERMS.
Delivery: As per clause No. 16.3 of "Annexure - C".
EMD: As per clause No. 6.1 of Annexure - A
Validity: As per clause No. 1.2 of Annexure - A
Warranty: As per clause No. 16.8.2 of General condition of contract (Annexure C)
Payment Terms: As per clause No. 16.6.1 of General condition of contract
(Annexure - C)
6
Risk purchase and L.D. clause: As per clause Nos. 16.1.1 & 16.4 of General condition of
contract (Annexure - C)
7
Security Deposit: A s per clause No. 16.2 of General condition of contract
(Annexure - C)
8
ARBITRATION CLAUSE - FOR Suppliers: As per clause No. 16.9 of General condition of
contract (Annexure - C)
9
10
11
12
13
14
15
Packing & Forwarding Charge(FOR RFI):
Excise Duty & Cess:
CST / VAT without form "C or D":
Freight & Insurance Charges:
Training Charges:
Errection & Commissioning Charges:
Service Tax: