SCOPE OF WORK
This specification covers the technical requirements of Design, Manufacture, Test at Works and Supply of 11 kv VCB Panel for incomer and outgoing with bus couplers, Distribution, Change Over Panel with PLC and SCADA and PC station.
STANDARDS
The equipment covered by this specification shall, unless otherwise stated, be designed, constructed and tested in accordance with the requirements of the latest revision of Indian standards.
CONSTRUCTION
The control Panel shall be metal enclosed, compartmentalised, modular type, and construction suitable for Indoor installation.
The control Panel shall be dust and vermin proof and the enclosure shall provide a degree of protection of not less than IP 45 as per IS 2147. Control Panel shall be fabricated out of adequate thickness mild steel structural sections. The frames shall be enclosed with steel sheet of not less than 2.0 mm thickness with rubber gaskets at all joints and openings including doors. All bolts, nuts and other fastener shall be cadmium plated only.
The VCB breakers should be of 630 Amps, 25 kA capacity with copper bus bars
The control Panel shall have a series of cubicles of uniform height placed side by side with front access for operation. The maximum operating height of the devices on the panel shall not exceed 2500mm and minimum operating height shall not be less than 400 mm. Control Panel shall be supplied along with base channel fabricated out of 3 mm thick steel sheet, painted black.
PAINTING
Care shall be taken in workmanship and selection of materials to prevent the occurrence of any form of damage or corrosion.
All items shall be cleaned and deburred after fabrication and welding is complete. External surfaces shall be filled and rubbed down as necessary to obtain a perfectly flat smooth surface, free from blemishes and imperfections and the whole shall be painted with under coats followed by two coats of Epoxy paint. The exterior colour shall be indicated later by the purchaser and the interior of the enclosure shall be painted matt black. The busbars shall be painted matt black.
The painting process shall be using a seven tank phosphating system with primer coating within 4 hours of phosphating and two coats Epoxy Powder Coating.
The painting process shall be pre approved by the Consultant / Owner.
The paint shall not rust especially in corners and holes for 10 years.
Painting shall be subject to inspection before assembly.
DRAWINGS
After award of the order, the manufacturer shall submit the following documents for approval.
General arrangement showing the plan, elevation, different views, detailed typical cross section of busduct, details of expansion joint, termination arrangement at both ends, busbar arrangements, erection details with necessary supports.
Test certificates.
Complete technical particulars of the components of busduct.
Commissioning and maintenance instruction for the busduct.
Design calculations.
Bidder shall furnish a cross section of the busducts showing the following along with the Bid.
a. Size of Enclosure
b. Size of Busbars
c. Type of Bus support and spacing.
SPACE HEATERS
Anti-condensation space heaters, with thermostat suitable for 230 V, 1 Ph supply along with a switch / fuse shall be provided in each panel.
CONTROL SWITCHES
A general purpose control switch shall be provided for selection of "Auto" & "Manual". The switch shall be provided with engraving plate in the front with "Auto", Manual" & "Off" inscription. This switch shall be normally of the fixed-control bar type heavy duty unit.
MEASURING INSTRUMENTS
Ammeters and Voltmeters shall be of digital type. They shall be industrial grade and shall have means of zero adjustment from the front without dismantling them. They shall be capable of carrying the normal full load current (via CTs) and shall not be damaged by effects of rated fault current. The instruments shall have an accuracy class of 1.0 as per IS - 1248.
CONTROL WIRING
Panel shall be supplied with all internal wiring comprising of PVC insulated 1.1 KV grade, multistranded flexible copper conductor of 2.5 Sq.mm cross section.
Wiring associated with a particular phase shall be the colour of that phase viz. Red / Yellow, or Blue, wiring associated with earthing shall be with green colour insulation and for neutral it shall be with black colour insulation.
Wiring shall be neatly laid and run on insulated cleats of limited compression type insulated straps.
All cables shall have crimped terminations and shall be Identified by means of glossy plastic ferrules at both ends, showing the wire number as indicated in the schematic diagrams. The ferrules shall be indelibly marked.
Wiring to items mounted on hinged doors or wiring that is subject to movement, shall run in helical binding. The binding shall be securely anchored at both ends and sufficient slack provided to prevent any strain being imposed on wiring.
EARTHING
All the metal parts of all equipment supplied with in the panel (including doors and gland plates) other than those forming part of all electric circuit, shall be connected by means of two independent earth conductors to continuous copper earth bar of size 25 x 3 mm running along the full length of the panel.
The panel shall be provided with two brass earthing stud terminals, with suitable nuts, washers etc. for connection to ground bus.
TERMINAL BLOCK
Terminal blocks shall preferably be grouped according to circuit functions and each terminal block group shall have atleast 10% spare terminals. Terminal blocks for control circuit shall be of 650V grade with contact ratings not less than 10A and stud/clamp type.
Not more than two wires shall be connected to any terminal block.
LABELS
Labels shall be provided to describe the duty of or otherwise identify every Instrument, or other item of equipment mounted internally and externally. Switch positions shall be fully identified. Wording shall be clear, concise and unambiguous.
Each label shall be permanently secured to the panel surface below the item to which it refers.
The labels shall be engraved plastic (4 mm THICK) with white letters in black background.
In addition to component labels, each cubicle door shall bear a large identification labels and the panel shall include large, prominent overall identification label.
PAINTING:
Care shall be taken in workmanship and selection of materials to prevent the occurrence of any form of damage or corrosion due to damp or highly humid conditions.
The panel shall be prepared, primed, filled and painted to the highest standards.
All items shall be cleaned and deburred after fabrication and welding is complete. External surfaces shall be filled and rubbed down as necessary to obtain a perfectly flat smooth surface free from blemishes and imperfections and the whole shall be Powder Coated with Epoxy paint and the shade shall be indicated later.
The panels shall be fabricated at such work shops where the following facilities are available.
a) Sand blasting
b) Pretreatment (Seven tank process)
c) Spray booth
d) Heating oven for all sizes of panels.
e) Heat shrinking of PVC sleeves.
TESTS
The panel shall be completely assembled, wired, adjusted and tested for operation under simulated conditions to ensure accuracy of wiring, correctness of control scheme and proper functioning of all equipment.
Type Tests
The Bidder shall furnish the (2) sets of type test certificates for all the tests, conducted on similar panel.
1. Short time current test.
2. Temperature rise test
3. One minute power frequency voltage withstand test.
Routine Tests (To be witnessed by Client’s / Owner)
1. Mechanical operation test
2. Dielectric tests
3. Functional/Wiring test
Drawings and Documents
The following drawings and documents shall be furnished.
a. General Arrangement drawing of the panel showing.
i. Overall Dimensions
ii Terminal locations
iii. Total weight
iv Foundation details
v. Sectional view
vi. Bill of materials
b. Single line diagram and wiring diagram.
c. Technical details for VCBs, Switchgear, lamps, meters etc.
d. Manufacturing schedule and test schedule.
e. Calculation for sizing of busbars.
d. Quality Plan
e. O & M manual
The bidder shall furnish a tentative drawing showing the overall dimensions of the panel, along with the bid.
TOOLS AND TACKLES
All tools, normal as well as special tools if any, required for the repairs or maintenance of panel shall be recommended and supplied along with the panel without extra cost.
SPARES
Commissioning Spares
The quoted price shall be inclusive of all necessary commissioning spares.
Maintenance Spares
Contractor shall recommend and quote for maintenance spares.
SPECIFICATION FOR 11 KVA DISTRIBUTION AND CHANGEOVER PANEL
EACH 1010KVA INCOMING DG PANEL CONSISTING THE FOLLOWING:-
01. 96 Sq. mm. MDM Meter -01No.- SCHNEIDER
02. 96 Sq. mm. KWH Meter With Sealing Facility -01No.- SCHNEIDER
03. 96 Sq. mm. Frequency Meter -01No.- SCHNEIDER
04. 96 sq mm Combined DC Voltmeter 0 - 50V And
DC Ammeter 0-20A for Battery Charging Circuit. -01Nos.- RISHOB
05. 20A/24DC SMPS Type Battery Charger with -01NO.- NHP
built in protection
06. Earth Leakage Relay with CBCT -01No.- SECO
07 LED Type Indicating Lamps -01SET.- L&T
08. Push Buttons for Start, Stop, EM/Stop ACK, Reset -01SET.- L&T
09. Selector Switch for Engine Control,
Auto / Manual / Battery-Charger Mode Selection -01SET.- SALZER
10 1600A 50KA TP EDO ACB with built in Over Load,
Short Circuit protection for DG Incoming -01No.- SCHNEIDER/L&T/ABB
11 250A TP Air-Break Power Contactor DG -01No.- SCHNEIDER/L&T/ABB
for Neutral
12 AMF, Auto Synchronizing & Auto-Load Sharing Relay
With built in complete engine, generator and mains -01No.- WOODWARD
Protection and controller into one unit
a) AMF Start/Stop
b) Synchronization and Load Management Automatic
base load
c) Automatic Start/Stop Sequencing
d) Over/Under Voltage, over/under Frequency, overload
/Reverse Power, over current, load imbalance
Protection with can bus communication
13. 1600A TPN Aluminum Bus Bar -01Lot.- JINDHAL.
14. Auxiliary Contactor And Timer for Auto Signal –01Lot.- L&T/EAPL
15. Master Trip Relay –01No.- C&S
16. Reverse Power Relay –01No.- C&S
17. Restricted Earth Fault Relay –01No.- C&S
18. Current Transformer 1600/5A C-1 15VA -01Set.- KALPA
for Metering
19. Current Transformer 1600/5A C-1 15VA -01Set.- KALPA
for Relay
20. 24V DC Micro PLC & SCADA System -01Set.- HORNER
PLC Control System:
As soon as the mains supply goes off, the DG set
Should Auto Start and take the full load prescribed
Within 15 seconds including LDSS
Monitoring and data logging the all DG parameters,
MMI-graphical display of DG Set status, A, KW, RPM,
TEMP & all alarms etc.,
21. Rating Plate, Danger Sticker Earth Bolt Etc., -01Set.- BSGPL
COMMONOUTGOING
01. 1600A 50KA 4Pole EDO ACB with built in Over Load,
Short Circuit Protection -03Nos.- ABB
02. 3200A TPN Aluminum Bus Bar -01Lot.- JINDHAL.
03 Design, Manufacturing, Supply, And Commissioning -01No.- MANTECH
Synchronizing Panel
Panels will be made out of 14/16 SWG CRCA Sheet
Steel with Powder Coated and Foam Type Neoprene gasket.
Siemens Gray rail:7032 Indoor Type Floor Mounting Panel
with IP 44 Protection
SPECIFICATION FOR 3x1010KVA/11KV DG HT VCB PANEL (3 I/C & 1O/G)
INCOMING SIDE:-
01. 11 KV 350MVA 800A 26.3KA 230V AC Spring charging
Motor TP VCB With 30 V DC Closing Coil -03Nos.- SIEMENS/MEGAWIN
And 30V DC Trip coil
02. 96 Sq. mm. multi data meter EM 6400 -03Nos.- SCHNEIDER
03. 110V AC LED Type Indicating Lamps for VCB ON, OFF -03SETS.- L&T
TRIP, & R Y B Phases
04 Local Romote & CB Control Selector Switchs -03SETS.- SALZER
05. 6A SP Control MCB -03SETS.- L&T
06. Terminal Block For Interfacing With Control, -03SETS.- ELMAX
Auxiliary, Relay And Syn Panel
07. 800A ETP grade TP Copper Bus Bar -03Lot.- JINDHAL.
08. Current Transformer 100/5A CL - 1, 15VA -03Sets.- KALPA/SILKANS/
for Metering and Class -5p10 for protection PRAGATHI
09. PT 11KV√3(U1,V1,W1)/110V√ 3(U2, V2, W2) -03Sets.- KALPA/SILKANS/
CL- 0.5, 3P 100 VA PRAGATHI
10. Trip circuit supervision relay -03Nos.- SIEMENS/C&S
11. Master trip relay -03Nos.- SIEMENS/C&S
12. Power Pack with built in battery back at 10 Mints -03No.- ALAN
110V AC / 30 V DC
OUTGOING SIDE:-
01. 11 KV 350MVA 800A 26.3KA 230V AC Spring charging
Motor TP VCB With 30 V DC Closing Coil -01No.- SIEMENS/MEGAWIN
And 30V DC Trip coil
02. 96 Sq mm Digital Voltmeter 110V AC -01No- SCHNEIDER
03. 96 Sq mm Digital Ammeter -01No.- SCHNEIDER
04. 110V AC LED Type Indicating Lamps for VCB ON, OFF -01SET.- L&T
TRIP, & R Y B Phases
05 Local Romote & CB Control Selector Switchs -01SET.- SALZER
06. 6A SP Control MCB -01SET.- L&T
07. Terminal Block For Interfacing With Control, -01SET.- ELMAX
Auxiliary, Relay And Syn Panel
08. Current Transformer 200/5A CL - 1, 15VA -01Set.- KALPA/SILKANS/
for Class -5p10 for protection PRAGATHI
09. 800A ETP grade TP Copper Bus Bar -01Lot.- JINDHAL.
10. Trip circuit supervision relay -01No.- SIEMENS/C&S
11. Over Current & Earth Fault Relay -01No.- SIEMENS/C&S
12. Master trip relay -01No.- SIEMENS/C&S
SPECIFICATION FOR AUTO CHANGEOVER PANEL (2 I/C & 7O/G)
INCOMING SIDE:-
01. 11 KV 350MVA 800A 26.3KA 230V AC Spring charging
Motor TP VCB With 30 V DC Closing Coil -02Nos.- SIEMENS/MEGAWIN
And 30V DC Trip coil(DG & EB)
02. 96 Sq. mm. multi data meter EM 6400 -02Nos.- SCHNEIDER
03. 110V AC LED Type Indicating Lamps for VCB ON, OFF -02SETS.- L&T
TRIP, & R Y B Phases
04 Local Romote & CB Control Selector Switchs -02SETS.- SALZER
05. 6A SP Control MCB -02SETS.- L&T
06. Terminal Block For Interfacing With Control, -02SETS.- ELMAX
Auxiliary, Relay And Syn Panel
07. 800A ETP grade TP Copper Bus Bar -02Lot.- JINDHAL.
08. Current Transformer 200/5A CL - 1, 15VA -02Sets.- KALPA/SILKANS/
for Metering and Class -5p10 for protection PRAGATHI
09. PT 11KV√3(U1,V1,W1)/110V√ 3(U2, V2, W2) -02Sets.- KALPA/SILKANS/
CL- 0.5, 3P 100 VA PRAGATHI
10. Trip circuit supervision relay -02Nos.- SIEMENS/C&S
11. Master trip relay -02Nos.- SIEMENS/C&S
12. Power Pack with built in battery back at 10 Mints -02No.- ALAN
110V AC / 30 V DC
OUTGOING SIDE:-
01. 11 KV 350MVA 800A 26.3KA 230V AC Spring charging
Motor TP VCB With 30 V DC Closing Coil -07Nos.- SIEMENS/MEGAWIN
And 30V DC Trip coil