Augmentation of Existing 250KVA Substation and Allied Electrical works at Faculty of Fishery Sciences, Chakgaria , South 24 pgs.

Amount

Supply & Laying of 3 Core 240 sqmm 11 kV Grade (UE) XLPE/UE HT cable through Cable trench in the Substation as per G.S. (from 3 panel HT Gear to 2 nos. Transformer and WBSEDCL HV Gear to 3 panel HV Gear). [Make - Havels / Gloster / RR kable / Polycab]

Jointing of H.T. cable to the HT breaker and Transformer incl. supply of Heat Shrinkable Indoor type jointing kit for 11 kV, 240 sqmm XLPE – 3 core with necessary socket. (Make-Raychem)

SITC 11KV / 415V TRANSFORMER

Supply & Delivery of IP-43, 11kV/415V 500 KVA Dry type transformer as per specification below: (Make: Crompton / BHEL / Volt-Amp (Baroda) / Kirloskar / ABB / Raychem / Schneider/ Energypac) Applicable Standard:- IS 11171-1985 with latest modification (if any) & CBIP Specification Rating:- 500 KVA, 3 phase, 50Hz, Delta / Star Type:- Cast Resin type (CRT), three phase, copper wound, air cooled dry type. Voltage ratio:- 11000V / 415 Volt Links / Tappings:- Off circuit Links, tapping range +5% to -5% in steps of 2.5% Tap position configuration diagram shall be provided. Cooling:- Air Natural (AN) Painting:- As per IS 5 (Painted with synthetic enamel) Vector Group:- Dyn 11 Class of Insulationf:- Class F Temp. rise:- 90° C over ambient of 50°C

The core and coil assembly shall be securely fixed in position so that no shifting or deformation occurs during movement of transformer or under short circuit stresses. Transformer losses shall be guaranteed as per ECBC 2017 as below:- Max loss at 50% loading : 1.6 kW Max loss at 100% loading : 4.75 kW Efficiency (Minimum):- a) At Unity PF (i) 98.82% at full load (ii) 98.98% at 75% load (iii) 99.08% at 50% load Maximum Efficiency:- 99.08% at 48.12% i.e. 480 KVA Transformer losses shall be guaranteed on maximum basis i.e. without any positive tolerance. If the actual losses exceeds guaranteed losses by more than 10%, the transformer will be rejected. The purchaser, at this direction, may send the equipment at CPRI/Govt. laboratories, to check the actual loss, if they so desire. If the measured loss under such testing at those laboratories exceed the guaranteed ones, all the test charges will have to be borne by the supplier.

Impedance:- 4.5% (Allowable tolerance as per IS) % Regulation:- a) At Unity PF (i) with full load : 1.07 (ii) with 75% load : 0.81 (iii) with 50% load : 0.54 b) At 0.8 PF Lagging (i) with full load : 3.77 (ii) with 75% load : 2.83 (iii) with 50% load : 1.88 Testing:- All Routine tests as per relevant IS have to be conducted at manufacturer’s works. The manufacturer should have in-house test facilities and should arrange for type tests i.e. impulse test & temperature rise tests on chargeable basis, if asked for.Terminal arrangement:- HV : cable end box suitable for 3 core 300 sqmm XLPE cable of 11KV grade ;. LV : LV cable end box suitable for 3 run 3x400 sqmm XLPE LT cable of 1.1 KV grade. Enclosure:- Sheet steel with protection, painting should be epoxy / as per latest standard with paint shade 631 of IS-5.Basic Insulation level for HV:- 75 KV pk, class of protection -IP-43

Temperature Scanner:- Transformer will be provided with 3 RTDS for sensing winding temperatures alongwith temperature scanners for display of winding temperature and with Alarm / Trip contacts.

Installation, testing & commissioning of 11kV/415V, 500KVA Distribution Transformer including carriage to the substation building within a lead of 30m by placing in a position and fixing after leveling fitting al components, connecting, checking & set of all instruments, relays according to requirements as instructed by the EIC incl. S&F base channel etc after dismantling the existing Transformer from its existing place and place it at a position within a lead of 30 mtrs as per direction of EIC.

Dismantling the Consumer HT Gear after disconnect from the supply incl. removal of HT Cable (2 Nos.) and place it at a place within a lead of 30 mtrs. and reinstallation of the same after civil work as per direction of EIC.

SUPPLY & LAYING LT CABLES

Supply & delivery at site of 4 Core LT XLPE Insulated & Sheathed Armoured Aluminium Conductor cables for Working Voltage up to 1100 Volts of following sizes [Make - Havels / Gloster / R R kableI / Polycab]

4 Core 400 Sq. mm [3 run from T- O/G to LT Panel 800A ACB I/C + 1 run from new panel to existing panel I/C)

4 Core 150 Sq. mm [2 run from LT Panel old panel)

Laying of one cable above 150 sqmm and upto 300 sqmm through existing covered masonry trench incl. taking out RC covers, setting them in order, mending good the damages filling the trench with fine dry sand incl. supplying sand

Laying of one cable of 400 sq. mm through existing covered masonry trench incl. taking out RC covers, setting them in order, mending good the damages filling the trench with fine dry sand incl. supplying sand

Supplying and fixing compression type gland complete with brass gland, brass ring & rubber ring for dust & moisture-proof entry of XLPE/PVC armoured cables as below :

( i ) 4 Core 400sqmm

( ii ) 4 Core 150 sqmm

Finishing the end of following XLPE/PVC armoured cables by crimping method incl. supplying and fixing solderless socket (Dowels make), tapes, anticorrosive paste & jointing materials

( i ) 4 Core 400sqmm

( ii ) 4 Core 150 sqmm

SUPPLY & LAYING CONTROL CABLES

Supply & drawing 1.1kV grade 4 core 2.5 sqmm stranded armoured insulated copper control cable from transformer's WTI relay to ACB/ VCB WT relay for control supply.

Supply & drawing 1.1kV grade 2 core 2.5 sqmm stranded armoured insulated copper control cable from power DB to HV Panel, Transformer's marshalling box.

SITC OF 415V LT PANEL

SITC of floor mounted Indoor type extensible cubical LT Panel, Design by OEM and fabricated / manufactured by Authorised System House / Franchisee / Licensed partner / CPRI approved panel builder confirming to IEC-61439 part 1 & 2, Fully Design verified Assembly having compartmentalized design form 3b, of IP-42 indoor type, fabricated out of 14 SWG (2.0 mm) nominal thickness CRCA sheet steel for framework and covers, and 3.0 mm nominal thickness for gland plates, including cleaning and finishing complete with 7 tank process, with short time withstand capacity (Icw) of 26.3kA for 1 sec for vertical and horrizontal busbar, front and back openable, hinged, single shuttered, single door, with locking arrangement, good quality dust, damp and vermin proof rubber gaskets, solid connections from main busbars to switchgears with required size of Copper busbars, connections and interconnections and control wiring using 2.5 sqmm of RYB colour coded FRLS PVC Insulated Copper conductor single core cables and copper cable lugs incl.dismantling the APFC & LT Panel and reinstallation of the same within a lead of 30 mtrs as per direction of EIC.

BUSBAR

Extensible bus bar chamber 3 phase, 4 wire, 440 volts, 50 Hz consisting of high conductivity Cu bus bars of capacity 1000 Amps for incoming / outgoing feeder with PVC coloured sleeves with DMC / SMC busbar supports & their specing of 25mm b/w Ph to ph and 19mm b/w ph to N and Ph to E etc. Bus Bar shall have polyster glass support -1 Set

Motorized Air Circuit Breaker, Horizontal Electrical Draw Out type, 4 pole, 800 Amps, 415 volts, 50 kA, electrically & manually operated with mechanical & electrical interlock, Inbuit Anti-pumping Feature, automatic safety shutters, mechanical ON / OFF and service / test / isolated position indicators and frame earthing contact, with microprocessor release for over-Load Protection having range 40% to 100%, earth fault (range 0.2 to 0.6 In); Neutral protection (range 0.5 to 2In in steps of 0.05 In) and short circuit protection (range 0.6 to 12 In), electrical spring charge mechanism, 6 nos. NO + 6 nos. NC contacts, conforming to IEC 60947 part 2, 1 no. shunt trip coil 220 Volts AC, with cable end box of suitable size. [Bus Coupler without Protection] Accessories shall be front top mouted and shall be visible to operator through windows -1Sets Make: Schneider / L&T / Siemens / ABB.

a) 4 Pole MCB - 3 no.

b) 800/5A, 15VA, Class -1.0 Epoxy Cast CT- 9 nos.

c) LED type indicating lamp for ACB ON/OFF, CB Trip - 9 nos.

d) LED type RYB Phase indication lamps-- 3 nos.

e) Cubicle Panel illumination lamp with door switch - 1 set

f) Push Button for Emergency Trip- 1 no.

i) Digital Multi Function Meter- 1 no.

k) Push Button for ON/OFF- 2 no.

OUTGOING

(i) 415V, 400A, FP, 50kA MCCB with microprosser based LSIG protection with Spreader Terminals and Rotary Handle - 1 sets. (for existing LT panel I/C) Make: Schneider / L&T / Siemens / ABB.

(i) 415V, 250A, FP, 50kA MCCB with microprosser based LSIG protection with Spreader Terminals and Rotary Handle - 2 sets. Make: Schneider / L&T / Siemens / ABB.

(ii) 415V, 160A, FP, 50kA MCCB with microprosser based LSIG protection with Spreader Terminals and Rotary Handle - 2 sets. Make: Schneider / L&T / Siemens / ABB.

Sub Station Safety Equipment & Miscellaneous items

Providing & fixing danger plates made of mild steel at least 2mm thick & vitreous enameled white on both sides & with inscription in signal red colour on front side as required.

a) High Voltage - size 250 mm × 200 mm

b) Medium Voltage - size 200 mm × 150 mm

Supply and fixing of foam fire extinguishers, Portable type 9 lit capacity hanged on wall with bracket complete as required.

Supply and fixing safety instruction chart in word duly framed with 5mm thick glass as required (approx. Front area 1.20 sq.mt.)

Providing of 9.5 litre capacity GI bucket painted in post office red colour with prior coat of red-oxide paint and written with white paint 'FIRE' and mounted on MS angle iron frame with bracket and suitable base of appropriate size & capacity I/C filling sand etc.

Providing First Aid Box as approved by St. John Ambulance Brigade / Indian Red Cross conforming to IS 2217-1963.

Supply and fixing shock treat chart duly mounted on a wooden frame with 5mm thick glass as reqd. (approximate front area 1.20 sq.metre).

Providing of rubber mat 2 mtrs Length × 1 m. wide and 12mm thick to withstand 12 kV dielectric strength as per IS 5424-1969.

Providing of rubber mat 2 mtrs Length × 1 m. wide and 6mm thick to with stand 3.3 kV dielectric strength as per IS: 5424-1969.

SITC - EARTHING

Earthing with 80 mm dia GI pipe (TATA-Medium)x 3.0 Mts. long and 1 No. 65 mm x 8 mm galvanized (Hot Dip) steel strip (4 Mts. long), 20 mm dia x 125 mm long galvanized bolt, double nuts, double washers including finishing both ends by making holes etc. and S & F 80 mm dia GI pipe (ISI-Medium) protection (3 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level to an average depth of 3.65 Mts. , 2nos. for 1 nos. Tr Neutral, 2 nos. for 1 nos. Tr Body & 2 nos. for LT panel]

Supplying & fixing earth busbar of galvanized (Hot Dip) MS flat 65 mm × 8 mm on wall with heat shrinkable PVC sleeves having clearance of 6 mm from wall including providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required.

Supplying & fixing earth busbar of galvanized (Hot Dip) MS flat 50 mm × 6 mm on wall with heat shrinkable PVC sleeves having clearance of 6 mm from wall including providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required.

Connecting the equipments body to earth busbar including S & F 25 mm × 6 mm galvanised (Hot Dip) MS flat on wall/floor with heat shrinkable PVC sleeves with GI saddles as required and connection to equipments incl. drilling holes, with bolts, nuts, washers etc.

Jointing for Horizontal & vertical run of GI strip through welded joint of (25 x 6) mm or (50 x 6) mm GI Strip to Lap joints/ 'T' joints, etc. and painting the joints with 2 (two) coats of bituminous paint.

Note: 1) All the above rates should be quoted inclusive of all taxes, duties and all ancilery charges with cost of maintenance, servicing, supply & replacement of spares for 3(Three) years from the date of commissioning.

CHAKRABORTY ENTERPRISE (BID ID -6780374)

M/S. N.C. HORE (BID ID -6783890)