REPAIR/COMPREHENSIVE MAINT OF 33/11 KV MAIN RECEIVING SUB STATION AND CONNECTED WORKS AND REPAIR/MAINT OF TRANSFORMER AND OTHER CONNECTED WORKS IN TECH AREA AT AF STN HASIMARA.

Amount

Note 1:- (Applicable for all parts/items) : The biidders/contractors are advised to read tender documents & all corrigendum/amendments and general condition of contracts before entry/quoting the rates. Note 2:- Attention to bidder is hereby invited to upload revised BOQ if published during their bid submission. Uploading of incorrect/ pre-revised BOQ shall be treated as non bonafide and rejected. Fixed credit has been given in technical documents which shall be taken into account during acceptance of bid/tender.

M&L Complete comprehensive maintenance and servicing of Battery bank installed at 33 KV Main Receiving station 110 Volt including checking functionality of PCB, Automatic float (40 amps) & boost (18 amps) battery charging unit suitable for 110 volt 150 AH lead acid battery, all electronic parts, battery terminal, outgoing connection of VCB, RMU, OLTC Panel, auto operation of Isolator etc complete all as specified and directed. Note:- (i) Replacement of small piece of wire of sq area up to 1.5 sqmm (Control Ckt cable) of Max length 5 Mtrs asper colour code , replacement of unseviceble indicator lamps , control circuit fuses, SP/SPN Mcb's are included in quated rate. (ii) Major compenents as requird shall be measured and paid seperately.

S&F in replacement PCB and Intergrated Circuits ( IC), air cooled transformer same rating for battery charger panel as per sample / As per the latest specification of OEM required for ensure the functonal relaibility of Battery bank charging panel complete all as specified and directed.

Servicing repairing and overhauling of 33 KV isolator including cleaning of complete moving & fixed contacts and apply petroleum jelly on contacts, oiling greasing of operating mechanism auto / mannual function, tightening connections replacement of unserviceable parts, reassembling the isolator after repair and testing complete all as specified and directed.

M&L for aluminium conductor steel rein-forced (ACSR) DOG as over head, conductor for connectiong 33 KV equipment/33 KV distribution system with necessary connection with PG clamp and Jumpers of suitable size complete all as specified and directed.

S&F 33 KV Disc insulator 3 in series with tension clamp for connductor complete all as specified and directed.

S&F of 33kV Line Post Insulator Polymeric size 170mm X 376mm, Tensile strength : 10 kN, Creepage distance 900 mm, Dry Low Frequency Flashover Voltage : 90KV, Wet Low Frequency Flashover Voltage : 50 KV complete all as specified and directed.

M&L for lightening arrestor non - linear reistor type line discharge class-3, nominal discharge current 10 KA and high current with stand 100 KA asssembly suitable for 33 KV including all clamps, nuts and bolts, washers & connection to earth with 32 x 6 mm GI strip its connection with lightning arrestor from earthing pit and as well as with 33 KV line including supply and installation of jumper connection as required (for outgoing) (one per phase) complete all as specified and directed. Make:- OBLUM/GE ALPRO/Jaipuria Brothers

S&F of breaker charging motor 220 Volt AC suitable for 33 KV VCB Panel including control wiring complete all as specified and directed.

S&F of space/ strip heater including control wiring with fiber glass protected wire and connected to thermostate complete all as specified and directed.

Supply, fixing and testing 33 KV HT ceramic bushing of transformer 5 MVA (33/11 KV) capacity including taking down old bushing complete all as specified and directed.

Supply, fixing and testing 33 KV HT bushing rod of brass both ends threaded including nut, check nut and washer of transformer 5 MVA (33/11 KV) including taking down old bushing rod complete all as specified and directed.

S&F in replacement TNC Switch , three position suitable for 33 KV VCB complete all as specified and directed.

S&F in replacement Trip coil 110V DC with control wiring complete all as specified and directed.

S&F in replacement release coil 110V DC with control wiring complete all as specified and directed.

S&F in replacement Indicating lamp 110V DC complete all as specified and directed.

M&L for Aluminum pipe bus for 33 KV size 1.5" as per dimension laid down in IS : 2673 complete all as specified and directed.

M&L for 33 KV stack type (22 KV grade) 2 unit / stack basis normal duty insulator suitabale for 33 KV Distribution system complete all as specified and directed.

Supply and replacement of cable 1.5 sqmm 16 core armoured, heavy duty control cable complete with fixing arrangment in duct complete all as specified and directed.

S&F HT 33 KV out door type gang operated air-break switch suitable for vertical mounting fixed type , including operating mechanisem worked from ground level complete with 9 insulators and with earth switch upto 200 Amps complete all as specified and directed.

Supply, laying & testing cable XLPE insulated screened PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 33000 volts grade, of size single core 95 sq mm complete all as specified and directed.

S&F cable jointing kit for 33 KV grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 1 core XLPE armoured Al conductor cable of size 50 sq mm to 120 sq mm complete all as specified and directed.

S&F cable jointing kit for 33 KV grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for single core XLPE armoured Al conductor cable of size 50 sq mm to 120 sq mm complete all as specified and directed.

Dehydration and filteration of transformer oil from power transformer 5 MA , 33/11 KV Transformer installed at Main Receiving station and 11 KV/433 volt distribution trasformer upto 750 KVA at Technical/MD Accn area after taking down the relevent Shit down with Prior Information to achieve di-electric strength not less than 40 KV on 2.5 mm over gap for a period of one minute and testing of acidity of oil and dielectric strength (before and after dehydration / filtration) complete all as specified and directed.

Supply and filling up transformer oil (Grade ‘B’) for topping up in existing transformer and Oil Circuit Breaker, installed at various Sub Station , having Di-electric strength not less than 40 KV on 4mm over gap for a period of one minute complete all as specified and directed. Make:- GULF/INDIAN/OIL/HP

M&L for Repair / servicing of transformer in situ of any make, any type, any capacity 630 KVA to 750 KVA (step up or down) 11 KV / 0.433 Volt installed at various location in Tech area comprising with the following works :- a) Taking out transformer oil upto required level and keeping in empty container with safe custody for re-use after Dehydration. b) Opening of top cover of transformer and keeping aside and re-fixing the same after tightening of all LT and HT terminal joints (both inside and out side of transformer) including S&F of all gasket of bushing (6 mm thick rubberized cork sheet) to make leak proof. c) Checking of tap changing switch connections and tightening and soldering properly for smooth functioning. d) Cleaning of LT and HT Bushing, Replacement of burnt out bushing stud made out of brass, washer, nut, porcelain bushing of existing size, terminals, oil indication glass of conservator, top gasket and drain valve etc as directed by the Engineer-in-Charge. e) Cleaning of oil tank of transformer, conservator, core, vent pipes, cooling pipe / fins by desludging, decarbonizing and finally washing with transformer oil and drying complete. f) Filling up the transformer with existing taken out transformer oil carefully.

g) Dehydration and filteration of transformer oil from Transformer (s) to achieve di-electric strength not less than 40 KV on 2.5mm over gap for a period of one minute and testing of acidity of oil and dielectric strength (before and after dehydration / filtration) complete all as specified and as directed by the Engineer-in-Charge. h) Top up new transformer oil upto desired level. Note:- i) Replacement of unserviceable bushing (HT/LT) and terminals shall be measured and paid separately under respective item, under respective items. ii) New transformer oil shall be measured separately under respective items. iii) Any minor parts such as gasket, nuts, bolts, washers etc that are required to be replaced for satisfactory repair shall be provided by the contractor and rate for the same shall be deemed to be included with the unit rate. iv) Cost for dehydration and filteration of transformer oil shall be shall be deemed to be included with the unit rate.

All as per Item no 25.00 avove but for capacity 315 KVA to 500 KVA capacity complete all as specified and directed.

All as per Item no 25.00 avove but for capacity 100 to 250 KVA capacity complete all as specified and directed.

Supply only following items to incorporate against different items of Sch ‘A’ (Fixing charges are deemed to be included with connected Sch ‘A’ items where the parts are required to replace :-

Supply only HT porcelain bush set 11 KV for out door transformer of any size as per site requirement of capacity ranging from 25 KVA to 200 KVA complete all as specified and directed.

All as per item No. 28.01 above but capacity ranging from 250 KVA to 500 KVA complete all as specified and directed.

All as per item No. 28.01 above but capacity ranging 630 to 750 KVA complete all as specified and directed.

Supply only LT termination porcelain bush of outdoor / indoor transformer of capacity ranging from 25 KVA to 200 KVA as per site requirement complete all as specified and directed.

All as per item No 28.04 above but capacity ranging from 250 KVA to 500 KVA complete all as specified and directed.

All as per item No. 28.04 above but capacity ranging 630 to 750 KVA complete all as specified and directed.

Supply only HT 11 KV terminals stud with nuts, washers made out of brass of suitable size as per site requirement for transformer ranging from 25 KVA to 200 KVA complete all as specified and directed.

All as per item No 28.07 above but capacity ranging form 250 KVA 500 KVA complete all as specified and directed.

All as per item No 28.07 above but capacity ranging form 630 KVA 750 KVA complete all as specified and directed.

Supply only LT terminals stud made out of brass with nut and washer, suitable for transformer of capacity ranging from 25 KVA to 200 KVA complete all as specified and directed.

All as per item No. 28.10 above but capacity ranging from 250 KVA to 500 KVA complete all as specified and directed.

All as per item No. 28.10 above but capacity ranging from 630 KVA to 750 KVA complete all as specified and directed.

S&F breather assembly for transformer of capacity 25 KVA to 200 KVA including taking down unserviceable one complete all as specified and directed.

S&F breather assembly for transformer of capacity 250 KVA to 500 KVA including taking down unserviceable one complete all as specified and directed.

Supply and filling silica gel in breather assembly of 50 KVA to 500 KVA capacity transformer complete all as specified and directed.

S&F in repair gate valve made of brass (heavy duty) both end threaded with wheel of size 20 mm complete all as specified and directed.

S&F in repair gate valve made of brass (heavy duty) both end threaded with wheel of size 25 mm complete all as specified and directed.

S&F cable jointing kit for 11 KV(Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armored AI conductor cable of size 50 Sq mm to 95 sqmm complete all as specified and directed.

S&F cable jointing kit for 11 KV(Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armored AI conductor cable of size 120 sq mm complete all as specified and directed.

S&F cable jointing kit for 11 KV(Earthed) grade cable for outdoor termination heat shrink type joint joint complete with jointing material and accessories suitable for 3 core XLPE armored AI conductor cable of size 50 Sq mm to 95 sqmm complete all as specified and directed.

S&F cable jointing kit for 11 KV(Earthed) grade cable for outdoor termination heat shrink type joint type joint complete with jointing material and accessories suitable for 3 core XLPE armored AI conductor cable of size 120 sqmm to 185 Sqmm complete all as specified and directed.

S&F cable jointing kit for 11 KV(Earthed) grade cable for outdoor straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armored AI conductor cable of size 50 Sq mm to 95 sqmm complete all as specified and directed.

M&L XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 11000 volts grade, cross- sectional area 95 sqmm 3 core complete all as specified and directed. (Cable shall be layed in existing Cable duct /Trench)

Excavation in trenches not exceeding 1.5 metre wide and not exc 1.5 metre in depth for foundation of pole / stay, or cable trenches and getting out in soft/loose soil complete all as specified and directed.

Returning filling in incl spreading, leveling watering and well ramming in layers not exceeding 25 cm in soft loose soil complete all as specified and directed.

Removing excavated materials to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 metre above the starting point complete all as specified and directed.

Supply and laying double walled corrugated (DWC) HDPE duct pipe of 80mm dia. conforming to IS, approved colour complete with fittings for cable protection complete all as specified and directed.

Material & Labour galvanized iron tubing 100 mm bore (light grade) with all fittings for protection of cables, laid in trenches complete all as specified and directed. (Note : Excavation and earth work will be measured and paid separately ) (Make : TATA / JINDAL / PRAKASH)

S&L quarry ' M ' sand for cushioning for cable protection in trenches 8 cm before laying cable and 15 cm deep over the cable complete all as specified and directed. ( Note: Punned thickness shall be taken for measurement)

M&L Lifting the existing precast cement concrete cable cover/Serviceble bricks bricks obtained during excavation of existing cable and laying the same covers, in trenches for cable protection complete all as specified and directed.

Supply and laying reinforced precast concrete cable cover,class HV, Type 1, flat, size 300mmx l80mm x 40mm complete all as specified and directed.

M/S SARKAR ELECTRIC

SHRI D P AGARWAL