REPAIR/MAINT OF HT/LT SWITCH GEARS, HT/LT CABLEE, TRANSFORMERS, 4 POLE STRUCTURES AND CONNECTED ALLIED WORKS AT JAFFARPORE, KANCHRAPARA, BARASAT AND LOS DUM DUM UNDER GE (AF) BARRACKPORE

Amount

Taking out old unserviceable HT Air Break Switch Gang Operated any size and type from 4 pole/3pole/2pole structure complete all as specified and directed.

Taking out old unserviceable HT Lightning arresters any size and type from 4 pole/3pole/2pole structure complete all as specified and directed.

Taking out old unserviceable conventional type GI earthing and earth plates from LA, 4pole/3pole/2pole staructures complete all as specified and directed.

Supply and fixed in replacement for MS Channel/ Angle/Cross arms 'C' type, dimension and thickness as per existing fitted at site including making hole for clamping arrangements, drilling holes in any dia at any length, welding fabrication,, bending including all kind of nuts/bolts/washers and MS clamps of 5 mm thick and not less than 5 cm width suitable for mounting/fixing MS 'C' Channels on 4 pole/3 pole/2 pole or HT/LT poles including painting of complete structure including existing one by applying two coats of alumium paint over a coat of metalic primer after preparing the pole surfaces complete all as specified and as directed.

M&L for 100mm thick PCC (1:3:6), type C2 (using 40mm graded crushed stone aggregate) as in sub floors, sub bases, floors and pavings etc, including demolition of old existing PCC floor complete all as specified and as directed.

M&L for open the top cover of transformer of capacity 100 KVA to 315 KVA, after disconnecting HT/LT connection, drain out of transformer oil and preserve it in container, replacement of all gasket for prevention of leaking, replacement of broken HT/LT bushes as per existing size, refixing including all connection and testing on load complete all as specified and as directed. (Note : Cost of HT/LT bushes shall be measured and paid separately under appropriate items).

S&F in repair HT brass spindle factory made M12 type complete with gasket set as per existing model of transformer complete all as specified and as directed.

S&F in repair LT brass spindle factory made M12 type complete with gasket set as per existing model of transformer complete all as specified and as directed.

De-hydration of transformer oil after drain out of old existing oil completely from the transformer and collecting in a container, heating up of transformer oil with suitable method, testing of di-electric strength by using necessary instrument and proving the di-electric strength not less than 40MV in 2.5 gap complete all as specified and as directed.

Supply and topping up of new transformer oil of existing type having di-electric strength not less than 60MV complete all as directed.

Supply and fix in replacement Silica gel alongwith breather assembly of existing size of transformer capacity 100KVA to 315KVA including minor repair works in breather assembly, if required, complete all as specified and as directed.

M&L for rewinding of transformer of capacity 200KVA after dismantling of transformer, HT/LT winding and draining out of existing transformer oil complete with suitable gauge of super enamelled copper solid conductor wound in the shape of helical/disc/cylindrical/crossover or as per existing to generate maximum MMF and insulation of winding wrapped with kraft paper/press board, cotton insulating taps and insulating materials shall be of Class A type to withstand 105 degree celicius temperature, re-assembling of transfomer, testing of copper loss, iron loss, core loss, insulation test of all HT/LT windings, topping up of transformer, testing of di-electric strength of transformer oil and achieving upto 40MV to 60MV, repairing of tank body, denting/painting of full body afer preparation and 2 coats zinc chromite primer + 2 coats anti corrosive synthetic enamel paint over the body by using spary gun and compressor complete all as specified and as directed by ENgineer-in-Charge. [Note: (i) Quoted rate inclusive of all kind of transportation charge, hydra/lifting vehicle, suitable technician/labour etc from site to workshop and back to site complete. (ii) All the materials such as Copper winding wire, insulating papers, core plates, assembling accessories etc are included in quoted rate. (iii) Drain out and filling up of oil includes topping up of addl oil upto conservator level and de-humidification complete included in quoted rate. complete all as specified and as directed.]

S&F ceramic bushing of HT side of transformer 100KVA to 315KVA complete all as specified and as directed.

S&F ceramic bushing of LT side of transformer 100KVA to 315KVA complete all as specified and as directed.

S&F rubber cork sheet gasket complete kit for transformer top cover of capacity 100KVA to 315KVA of existing size, shape and thickness complete all as specified and as directed.

S&F in repair cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed.

S&F in repair cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed.

S&F in repair cable jointing kit for 11 KV (Earthed) grade cable for straight through cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed. (Note: Contractor has to arrange cable fault locating machine, vehicle and manpower and the cost of the same shall deemed to be included in the unit rate.)

S&F in repair Rubber mat HT 11KV grade of 1 mtr x 2 mtr x 19 mm complete all as specified and as directed. (Note: Unit quored rate shall deemed to be include for cleaning of surfaces with suitable cleaning agent etc.)

Supply and install in replacement of HT 11 KV outdoor gang operated air-break switch suitable for horizontal or vertical mounting with drop out fuse having 12 insulators of rating upto 200 Amps complete all as specified and directed.

S&F in repair Lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo Amp 11000 Volt complete all as specified and as directed.

M&L for Servicing / Greasing of HT Switch air break ( GOD) 11 KV TP with replacement of Corroded nut Bolts, ACSR Jumpers, making alignment of operating Mechanism for Proper ON / OFF operation of GOD and male contact including greasing complete all as specified and as directed.

M&L for preparation of HT Steel Tubular Two pole structure including cross arms, MS channels, clamps after scrapping thoroughly the existing rust / dirt / dust and corroded paint from the old steel surfaces and applying two coats aluminum paint over a coat of red oxide primer, complete all as specified and as directed.

M&L for preparation of HT Steel Tubular Four pole structure including cross arms, MS channels, clamps after scrapping thoroughly the existing rust / dirt / dust and corroded paint from the old steel surfaces and applying two coats aluminum paint over a coat of red oxide primer, complete all as specified and as directed.

M&L for disconnecting and taking out existing HT 11 KV VCBs of any make from housing and cleaning, rubbing and overhauling the mechanical parts and Servicing of 11KV indoor VCB, checking of quality of vacuum interrupter, insulation resistances, static contact resistance, Testing ( IR value, Ratio test, Polarity test) and connection verification of 11 KV Current transformer( Set of three) by PRIMARY CURRENT INJECTION KIT ,and Testing and calibration of relay( set of two Over current and one earth fault) by SECONDARY CURRENT INJECTION KIT including all other functional tests of the VCB, C&R panel and CTs, PTs complete all as specified and as directed. [Note: (i) No vehicle will be provided by the department for any kind of conveyance to any location. (ii) Contractor has to arrange suitable technician after getting shutdown permission from this office, atleast one week through proper channel.]

M&L for ACSR conductor, proper jointing with suitable clamps and termination with the help of suitable lugs in GODs, Drop Out units, insulators and cable end terminations etc of weasel with permissible sag as per IS rules etc including taking down old unserviceable ACSR conductor of any type and size complete all as specified and as directed.

S&F in repair Disc type insulator, porcelain, vitreous 145mm high and 255 mm dia ball and socket type, white, brown or green single disc assembly for tension with tension clamps for couductor, working pressure 11000 Volt, complete all as specified and as directed.

M&L in repair Pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut150mm height, 150mm dia for 11000 volts grade, complete all as specified and as directed.

Excavation in trenches in soft/loose soil not exceeding 1.5 m wide and not exceeding 1.5 m in depth, n.exc 10 sqm on plan, for foundation or for laying of cable/ pipe lines etc. and getting out complete all as specified and as directed .

Returning, filling in, including spreading, leveling, watering and well ramming in layers n.exc 25cm as in soft loose soil complete all as specified and as directed.

Removing excavated soil to a distance n.exc 50m and depositing where directed at a level not exc 1.5 m above the starting point complete all as specified and as directed.

Supply, filling in trenches, spreading, leveling sand cushioning 8 cm below cable and 15 cm above the cable punned down to 18 cm for under ground cable complete all as specified and as directed. (NOTE : For the purpose of Payment, Punned thickness of Sand Cushioning only shall be measured and paid for).

S&F burnt clay bricks, sub class B, old size, in trenches on cable as cable protection across the length of the cable (width wise) complete all as specified and as directed.

Supply, laying & testing and connecting cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade, of size 95 sq mm 3 core, (earth grade) ISI marked with valid CML No, including taking down old unserviceable cable of any description complete all as specified and directed.

Supply, laying & testing and connecting cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 1100 volts grade, of size 95 sq mm 3.5 core, (earth grade) ISI marked with valid CML No, including taking down old unserviceable cable of any description complete all as specified and directed.

Supply, laying & testing and connecting cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 1100 volts grade, of size 70 sq mm 3.5 core, (earth grade) ISI marked with valid CML No, including taking down old unserviceable cable of any description complete all as specified and directed.

Supply, laying & testing and connecting cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 1100 volts grade, of size 50 sq mm 3.5 core, (earth grade) ISI marked with valid CML No, including taking down old unserviceable cable of any description complete all as specified and directed.

Supply, laying & testing and connecting cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 1100 volts grade, of size 35 sq mm 3.5 core, (earth grade) ISI marked with valid CML No, including taking down old unserviceable cable of any description complete all as specified and directed.

Supply, connecting and testing of copper tripping coil 24V DC or 110V DC or as per existung voltage for 11 KV VCB including dismantling of old unserviceable one complete all as specified and as directed.

S&F in repair breaker charging motor including Gear assembly 110 volt AC to 25Volt AC or as per existing voltage range of 11 KV VCB panel, complete all as specified and as directed.

S & F in repair three phase Voltmeter square type Digital of size 96mm x 96mm of capacity 0 to 15 KV PT Ratio 11KV/110 Volt for panel complete all as specified and as directed.

Supply, installation, testing and commissioning of Micro processor based relay IDMT type (02 O/C + 01 EF) for 11 KV VCB panel, rating 5 Amps, Auxiliary supply 20-110 Volt DC complete all as specified and as directed. Note: (i) Testing of all kind of faults with minimum and maximum fault level shall be carried at site. (ii) Contractor has to arrange primary and secondary current injecting device alongwith expertised technician at his own cost.

S&F power pack of AC input 230V and output DC 24V - 110 Volt complete with weather proof enclosure, connecting cables, fixing accessories, inbuilt battery for 4 hr backup to operate relay and VCB charging mechanism complete all as specified and as directed.

S&F in replacement HT 11KV VCB resin & Copper bound Bus bar Spout 3 phase, Industrial grade complete assembly, as per existing model / size, complete all as specified and as directed.

S & F 11 KV panel indicating lamp fitting LED type suitable for 110 volt/230volt AC with base complete all as specified and as directed.

S&F 11KV high voltage shower assembly 24Volt, 2mm thick 50Hz for VCB panel complete all as specified and as directed.

S&F VCB Bus bar support insulator 11KV grade red colour with complete assembly, complete all as specified and as directed.

S&F in replacement MCCB 4 pole, 415 Volts, 63 Amps with breaking capacity 25 KA (Adjustable Thermal Magnetic Release Setting) complete all as specified and as directed.

S&F in replacement MCCB 4 pole, 415 Volts, 100 Amps with breaking capacity 25 KA (Adjustable Thermal Magnetic Release Setting) complete all as specified and as directed.

S&F in replacement MCCB 4 pole, 415 Volts, 160 Amps with breaking capacity 25 KA (Adjustable Thermal Magnetic Release Setting) complete all as specified and as directed.

S&F in replacement MCCB 4 pole, 415 Volts, 200 Amps with breaking capacity 36 KA (Adjustable Thermal Magnetic Release Setting) complete all as specified and as directed.

S&F in replacement MCCB 4 pole, 415 Volts, 400 Amps with breaking capacity 36 KA (Adjustable Thermal Magnetic Release Setting) complete all as specified and as directed.

Cutting of bituminous road/hard standing for crossing of pipe line, for cable protection, etc. complete all as specified and as directed.

M&L for PCC (1:3:6) type C-2 (using 40 mm graded stone aggregate) as in foundations, filling and mass concrete complete all as specified and as directed.

S&F in repair GI tubing of size 50 mm bore, light grade, with all fittings for protection of cables, to cross under road, hard standing, pavements etc and making good the disturb surfaces complete all as specified and directed.

M&L for preparation of old painted steel and iron surfaces of LT panel board, feeder pillar box and AMF panel board/PFC panel etc over 10cm width or girth and applying two coats of anti corrosive synthetic enamel paint over two coats of metallic zinc chrome primer complete all as specified and as directed.

M&L for Earthing complete with GI earth plate electrode of size 600x600x6 mm thick buried directly in ground with earth pit not less than 2.25 meter deep below ground level with top edge of plate not less than 1.5 meter below normal ground level connected to GI earth strip of size 32 x 6 mm earth lead by means of nuts, bolts, check nuts, washers of galvanized iron as steel, protected by galvanized iron pipe 40mm bore (Medium grade) all as directed including cement concrete (1:3:6) type C-1 earth pit with precast RCC (1:1.5:3) type A-1 cover slab of size 45 x 45 x 5cm thick reinforced with 8mm dia TMT bars @ 15 cm c/c both ways with 10mm dia mild steel round bar of 30 cm long, bent to shape as lifting handle, funnel, wire mesh, 20 mm bore galvanized iron pipe (medium grade) for watering, charcoal or coke and salt in alternate layers with necessary earth work in soft/loose soil complete all as shown in electrical plate No 3 of SSR Part I including testing on completion and including taking down old earthing complete all as specified and as directed. (Note: GI earth strip upto 7.5m is deemed included in the item).

M&L for complete disconnecting APFC panel from all incoming/outgong connection of any capacity, checking the serviceability of all components i.e existing capacitors, contactors, MCB's, indicator lights-03Nos, replacement of burnt out PVC insulated copper wire-40RM, copper thimble - 08 Nos, MCB's SPN C Series (6-25Amp) - 02 Nos and re-connect the same after thoroughly clean including testing complete all as specified and as directed. (Note:- Power factor controller shall be measured and paid separately).

Supply and fixing tamper proof intelligent power factor controller with digital multi function meter display of capacity 8 Step 440 volt, 3 phase 50 Hz. complete all as specified and as directed.

M&L for cleaning of HT/LT Electric supply installation by spraying of weeds herbicide for kill unwanted vegetation around near and around electrical power house installation, around all LT panel boards and feeder pillar boxes, cutting grass, removing unwanted bushes, removing debris etc and making good of undulated ground by filling fresh soil and levelling the area to existing ground level, removing unwanted debris from the premises at a distance above 50m from site complete all as specified and as directed. [Note: (i) Locations - (a) Jafferpore, approx area - 2800 SQM. (b) Kancharapara AF Camp, approx area - 3600 SQM (c) LOS Dum Dum AF Camp, approx area - 1600 SQM (ii) In case of damage to any existing assets such as UG cables, Pipelines or any type of things, contractor has to make good as per the existing.]

S&F in repair HDPE pipe of 150mm dia, PN 10, heavy grade, fixed on 2 pole/4 pole structure for cable protection etc. complete all as specified and as directed.

Note: Schedule of cedit amount of Rs 104761.00 shall be deducted from the total quoted amount of BOQ.

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