REPAIR MAINTENANCE TO EXTERNAL ELECTRIFICATION SYSTEM ,OH HT LINES ,UG CABLES, APFC PANELS, TRANSFORMERS AND ALLIED WORKS AT CAW AND AF OFFICERS RESIDENTIAL ACCN UNDER GE(AF) HAKIMPET.

Amount

Dismantling damaged PCC poles / steel tubular poles/struts of any size complete and supply & erect steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-31 (9.00 metres long) including painting of poles with two coats of aluminium paint over a coat of red oxide primer on all exposed surfaces and black bituminous paint on embedded portion complete all as specified and directed. Note: PCCfor foundation and excavation shall be measured and paid seperately under relavent items of BOQ

M&L for PCC 1:4:8, type D-2, using 40mm graded stone aggregate as in foundation for erection of poles / stay assembly complete including breaking and removing the old concrete all as specified and as directed.

M&L for PCC 1:3:6, type C-1 using 20mm graded stone aggregate as in coping to pole etc., including breaking and removing the old concrete necessary form work complete all as specified and as directed.

Dismantling old, rusted cross arms of MS channel or angle sections etc. and M&L for cross arms, bracings, supports, clamps and back plates fabricated from structural steel section including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts in any shape or size including painting of one primer coat, one under coat and one finishing coat complete all as specified and as directed.

Dismantling unsv insulators and M&L for pin type, porcelain, vitreous, white, brown or green insulators including one galvanised mild steel spindle, two galvanized iron washers and one galvanized iron nut, 150mm height, 150mm dia for 11000 volts grade complete all as specified and as directed.

Dismantling unsv insulators and M&L disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball & socket type, two-in-series, white, brown or green with tension clamps for conductors working pressure 11000 volts, grade for single disc assembly complete all as specified and as directed.

Dismantling old unsv ACSR conductor and M&L for ACSR conductor in OH lines of HT/ LT/ street light conductor (Squirrel / Weasel) including binding with aluminium wire, in between every span complete all as specified and directed.

M&L for preparation of old painted surfaces of HT 11 KV four pole structure and painting with two coats of 1st quality aluminium paint over a coat of red oxide primer on all steel surfaces such as poles, channels, angles and clamps of any description complete all as specified and directed.

All as per item No. 8 here-in-before but of two pole structure.

Labour only for removing existing aggregate from switch yard and stacking aside , and spreading / loose filling with aggregate stacked, levelled in layers not exceeding 15cm thick, around transformer and two pole / four pole structure complete all as specified and as directed.

surface excavation not exc 30cm deep and avg 15cm deep and getting out in hard/dense soil and treating soil with approved chemical against growth of vegitation complete all as specified and directed.

M&L for loose filling with aggregate of gauge 40 to 80 mm of broken stone or boulders, deposited, spread and levelled in layers not exceeding 15cm thick, watered and rammed to a true surface of transformer and two pole / four pole structure complete all as specified and as directed.

M&L for preparation of old painted surfaces of HT 11 KV, 11.00 metres long pole and painting with two coats of aluminium paint over a coat of red oxide primer above 1.5M height from ground level and on all steel surfaces such as channels, angles, clamps, nuts, bolts and washers and zebra marking using reflective tape, two layers each of black & Yellow colour upto 1.5 metres height from ground level, numbering the poles with letters of height not less than 4cm, complete all as specified and as directed.

All as per item No. 13 here-in-before but of LT poles of 8 / 9 metres long poles.

Taking down unsv lightning arrestors and Supply and fix new lightning arrestors, 10kA, expulsion type complete with all fittings, transmission class, max. discharge capacity 65 kA suitable for 11000V grade supply, complete all as specified and as directed.

Taking down unsv gang operated switch and Supply and fix switch air break, gang operated, triple pole, mechanically operated, vertical type, mounted on insulators and steel frame, with operating mechanism worked from ground level for current rating upto 200 Amps suitable for 11000 volts grade complete all as specified and as directed.

Servicing of gang operated switch on Two/ four pole structure at elevated height and replacing unserviceable components like knife, connecting copper strip, nut, bolts & washers of GI/brass as and providing suitable lubrication to component of switch air break, gang operated, triple pole, vertical or horizontal type mechanically operated for current rating upto 200 Amps suitable for 11000V grade complete all as specified and as directed.

Taking down expulsion fuse unit and supply and fix 11000V grade, expulsion type fuses, single pole, mounted on insulators and steel frame of current rating 50Amps complete all as specified and as directed.

Taking down the failed cable from its position, supply, prepare and connect cable jointing kit for 11KV (Earthed) grade cable, for outdoor end 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. Make:3M/ Reychem/ Dension.

All as per Item No 19 here in before but of size 120 Sqmm to 185 Sqmm (Two for MRS)

Taking down the failed cable from its position, supply, prepare and connect cable jointing kit for 11KV (Earthed) grade cable for Indoor end 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. Make:3M/Reychem/ Dension.

All as per Item No 21 here in before but of size 120 Sqmm to 185 Sqmm

Taking down the failed cable from the excavated trench, material and labour for straight through cable jointing kit for 11KV (Earthed) grade cable, cold shrink type complete with accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 Sqmm to 95 Sqmm all as specified and as directed. Make:3M/ Reychem /Dension.

All as per Item No 23 here in before but of size 120 Sqmm to 185 Sqmm

Taking down u/s HT UG cable and Supply, laying, connecting and testing of XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts grade(earthed) of cross sectional area 95 Sqmm 3 core complete all as specified and as directed. Make: Nicco / Gloster / Havells.

All as per Item no 25 here in before but of size 3 core 150 Sqmm

Excavation in trenches not exceeding 1.5 m in wide and not exceeding 1.5m in depth for laying of cables / stay assembly / pipe lines and getting out in the following types of soil complete all as specified and as directed.

Soft / loose soil

Hard / dense soil

Soft/ disintegrated rock

Hard rock

All as per item No.27 here-in-before but depth exc. 1.5m and not exceeding 3m in hard / dense soil.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cms complete all as specified and as directed.

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

Supply and spreading clean, fine, dry river sand in trenches for cushioning of under ground cable / inside transformer yard complete all as specified and directed by Engineer-in-Charge. Note: Only punned thickness shall be measured for payment purpose.

Supply and laying un-reinforced pre-cast concrete cable covers, Class HV, type 1, flat, of size 300 x 180 x 40 mm for cable protection complete all as specified and as directed.

Supply and lay common burnt clay building bricks sub class 'B' of designation 75 laid in trenches as protection to cables complete all as specified and as directed.

M & L for Road cutting / hard standing for taking up or laying of LT UG cable upto a depth of 15 cm, after laying of cable, well ramming to the excavated soil and repair the exvcavated portion of road as existing or by providing suitable mixture of PCC all as specified and as directed.

Taking down unsv GI tubing and M&L for new galvanized steel tubing, medium grade, with all fittings for protection of cable complete all as specified and as directed of the following sizes :-

100mm bore.

80mm bore

50mm bore

40 mm bore

M&L for repair of transformer by carefully Isolating and dismantling the HT / LT and earth connections, draining out the oil from transformer to the required level and storing in cleaned containers, opening the top cover and conservator tank from transformer, for rectifying the defects and dismantling and replacing burnt out LT/ HT bushes and fixing back the same using new oil seal, gaskets, GI nuts, bolts & washers of suitable size, making all HT / LT connections as per the original, re-filling the transformer oil to the required level and testing on completion for capacity upto 400 KVA complete all as specified and directed. NOTE: (i) LT/ HT bush, transformer oil for topping up will be measured and paid separately as supply only under relevant items.

Disconnecting the HT / LT connections, taking out the transformer from its plinth at any situation with the help of suitable crane and transporting the transformer to workshop for carrying out necessary repairs and bringing back and re-install in its original place, of capacity upto 400 KVA complete all as specified and directed.

Disconnecting the Electric cable connections, taking out the voltage stabilizer/Alternator from its position at any situation with the help of suitable pully / crane and transporting the voltage stabilizer / Alternator to workshop for carrying out necessary repairs and bringing back and re-install in its original place, of capacity upto 160 kVA complete all as specified and directed.

Taking out complete core from transformers / Voltage stabilizer / Alternator of capacity upto 400 KVA, cutting and removing burnt out winding and re-winding the same with super enamelled copper conductor of existing gauge using proper insulating materials, applying varnish, drying in heating chamber, re-assembling the transformer as per the original and testing on completion complete all as specified and directed. Note:- Shifting of transformers/ Voltage stablizer from installed position to Civil workshop and back will be measured and paid seperately under relevant items.

Filteration of transformer oil at site of 11KV / 433V, indoor / outdoor transformer / Voltage stabilisers of any capacity installed at various locations, with mobile type filtration plant to acheive minimum di-electric strength of 40 KV for 1 minute at 4mm gap, as per relevant I.S. and Topping up of transformer oil into the body / conservator tank of transformer upto required level, including testing and recording the values of di-electric strength of oil before and after filtration at site with transformer oil testing machine complete all as specified and directed. NOTE: Transformer oil will be measured and paid seperately as ''supply only'' items of schedule.

Supply only transformer oil for topping up in transformers. Make:Poweroil /Transol GET/ Servo.

Supply only HT bush of capacity upto 250 KVA.

Supply only HT bush of capacity above 250 KVA and upto 400 KVA.

Supply only LT bush of capacity upto 250 KVA.

Supply only LT bush of capacity above 250 KVA and upto 400 KVA.

Supply only HT bush with copper rod of capacity upto 250 KVA.

Supply only HT bush with copper rod of capacity above 250 KVA and upto 400 KVA.

Supply only LT bush with copper rod of capacity upto 250 KVA.

Supply only LT bush with copper rod of capacity above 250 KVA and upto 400 KVA.

M&L for preparation of old painted surfaces of 11 KV / 433 V outdoor type distribution transformer, painting with spray gun through out externally with two coats of synthetic enamel paint of best quality of approved colour and writing machine number in white colour on black background complete all as specified and directed for the following capacities of transformers:-

Transformer of capacity upto 100 KVA.

Transformer of capacity above 100 KVA and upto 250 KVA.

Transformer of capacity above 250 KVA and upto 400 KVA.

Disconnecting the HT/LT connections of a defective transformer of any capacity and shifting the trolley mounted mobile type transformer of capacity 200 KVA to the required location with tractor or crane if required and making all necessary HT and LT connections, testing and return back to the original location after completion of transformer repairs and reconnection.

Taking down unsv breather and Supply & fix silica gel breather, suitable for transformer including sufficient quantity of silica gel complete all as specified and directed for the following capacities of transformer:-

Transformer of capacity upto 100 KVA.

Transformer of capacity above 100 KVA and upto 250 KVA.

Transformer of capacity above 250 KVA and upto 400 KVA.

M&L for trimming of tree branches around HT / LT overhead lines, upto 3m on both sides of over head lines and depositing where directed at a distance not less than 50m complete all as specified and directed. Note:- The item will be measured in span length. The approx. span length is 30M to 40M.

Dismantling stay assembly complete with connected accessories such as stay strand, insulator, stay rod etc. including demolishing concrete and M&L for new stay assembly complete with accessories as shown in Electrical Plate No.1 of SSR Part-I (2009) with 16mm dia stay rod inclusive of Stay strand of size 7/3.15 mm, loop type insulator vitreous porcelain, white, brown or green with overall dimensions 65 x 90mm, clearance of hole 16mm, stay clamps, excavation and PCC 1:3:6 type C-2 with 40 mm aggregate complete all as specified and directed.

Taking down unsv Pin type insulator and supply and fix new Pin type, porcelain, vitreous, white, brown or green insulators including one galvanised mild steel spindle, two galvanized iron washers and one galvanized iron nut, 100 mm height, 65mm dia for 1100 volts grade complete all as specified and as directed.

Taking down unsv shackle type insulator and supply and fix new shackle type, porcelain, vitreous, white, brown or green insulator including galvanised mild steel straps, washers, insulator bolts and nuts, of size 100 mm height, 115mm dia for 1100 volts grade complete all as specified and as directed.

Taking down the damaged / punctured cable from the excavated trench for cutting and removing the damaged portion of the cable, jointing the serviceable part of the cable of the following cross-sectional area complete all as specified and as directed. (Note: Excavation, jointing and relaying shall be measured separately under relevant items)

2core x 10Sqmm to 4core x 16sqmm

3.5core x 25Sqmm to 3.5core x 50sqmm

3.5core x 70sqmm to 3.5core x 150Sqmm

Relaying the repaired and serviceable part of the cable in the same trench or new trench as per site conditions, of the following cross-sectional area complete all as specified and as directed. (Note: Excavation, jointing and relaying shall be measured separately under relevant items)

2core x 6Sqmm to 4core x 16sqmm

3.5core x 25Sqmm to 3.5core x 50sqmm

3.5core x 70sqmm to 3.5core x 150Sqmm

Supply and laying of XLPE insulated, armoured, heavy duty electric cables with aluminium conductor, 1100 volts grade, of following cross-sectional area complete all as specified and as directed. Make: Nicco / Gloster / Havells / CCI.

10 Sqmm, 2 Core

10 Sqmm, 4 Core

16 Sqmm, 4 Core

25 Sqmm, 3.5 Core

35 Sqmm, 3.5 Core

50 Sqmm, 3.5 Core

70 Sqmm, 3.5 Core

95 Sqmm, 3.5 Core

120 Sqmm, 3.5 Core

150 Sqmm, 3.5 Core

Taking down aluminium lugs / ferrules of any description and S&F new aluminium cable lugs/ ferrules including cutting and removing the damaged/burnt portion of cable, complete all as specified and as directed of the following sizes:-

Upto 25 Sqmm

Above 25 Sqmm and upto 70 Sqmm

Above 95 Sqmm and upto 150 Sqmm

Above 185 Sqmm and upto 300 Sqmm

Taking down old UNSV change over switch from panel and S&F new onload change over switch 100 Amps, panel mounting type without enclosure, with extended handle, TPN, 415 volts, 50 Hz, AC, including necessary modifications in panel, of existing type / model complete all as specified and as directed. Make: L&T / Siemens / Havells / CG.

Taking down old UNSV change over switch and S&F new onload change over switch 100 Amps with sheet metal enclosure, TPN, 415 volts, 50 Hz, AC complete all as specified and as directed. Make: L&T / Siemens / Havells / CG.

Taking down MCCBs of any description from the panel board and S&F new MCCBs, 3 pole, 415 volts, to suit in the panel as existing type and model, including modification to the panel as required, of capacity from 25 to 100 Amps, breaking capacity 25 KA, complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Taking down MCCBs of any description from the panel board and S&F new MCCBs, 3 pole, 415 volts, to suit in the panel as existing type and model, including modification to the panel as required, of capacity 125 Amps, breaking capacity 25 KA, complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Taking down MCCBs of any description from the panel board and S&F new thermal adjustable MCCBs, 3 pole, 415 volts, as existing type and model, including modification to the panel as required, of capacity 160 Amps, breaking capacity 36 KA complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Taking down MCCBs of any description from the panel board and S&F new thermal adjustable MCCBs, 3 pole, 415 volts, to suit in the panel as existing type and model, including modification to the panel as required, of capacity 200 Amps with breaking capacity 36 KA complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Taking down MCCBs of any description from the panel board and S&F new thermal adjustable MCCBs, 3 pole, 415 volts, to suit in the panel as existing type and model, including modification to the panel as required, of capacity 250 Amps, breaking capacity 36 KA complete all as specified and as directed. Make: Siemens/L&T/Schneider/GE Controls.

Taking down MCCBs of any description form the panel board and S&F new MCCBs, 3 pole, 415 volts, of existing type and model suitable for panel mounting of capacity 315 Amps, breaking capacity 36 KA complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Taking down MCCBs of any description form the panel board and S&F new MCCBs, 3 pole, 415 volts, of existing type and model suitable for panel mounting of capacity 400 Amps, breaking capacity 36 KA complete all as specified and as directed. Make: Siemens / L&T / Schneider / GE Controls.

Tightening the sagged chain link fencing in the transformer yard, tightening standard rail/ FI clamps with new nuts and bolts of any size / binding wire as required, preparation of old steel surfaces of chain link fencing/mesh including fencing post, using wire brush complete, painting with two coats of best quality aluminium paint complete all as specified and as directed.

Repair & maintenance to existing earth chamber by breaking dilapidated earth pit, removing the debris and foreign material from pit chamber, construction of new earth pit chamber as specified in plate No.3 of SSR Pt-I and RCC cover slab of approx.size 35cm x 35cm x 5cm, reinforced with 8mm dia RTS steel bars inclusive of pouring of salt solution not less than 5 Kgs salt for one earth pit chamber, through the existing GI watering pipe and on sorroundings of earth pit by making suitable holes, to obtain required earth resistance value complete all as specified and as directed

M&L for earthing complete with galvanized steel earth plate electrode of size 600mm x 600mm x 6mm thick, buried directly in ground vertically to a depth not less than 2.25 Mtr below ground with top edge of the earth plate not less than 1.5 mtr below normal ground level, Earth plate shall be connected with double bolts, nuts, check nuts & washers, to & including 32x6 mm galvanized iron strip as earth lead, extended upto 7.5 m 'or' upto test terminal point, drawn through 40mm dia med. gr. GI pipe for protection of galvanized iron strip in the ground, further connecting with suitable size of earth strip to LT Panel, Transformer, DBs etc., including excavation, earth work, magnesium sulphate-50 Kg and charcoal in alternate layers on all sides sorrounding the earth plate, bentonite-25 Kg clay mixed with water and loomy soil sorrounding the plate on all sides, all as specified, PCC chamber, RCC cover slab, watering pipe 20mm dia bore med. grade, wire net, funnel etc. & testing on completion all as specified in plate No.3 of SSR Pt-I, including breaking and removing the old unsv earth materials complete all as specified and as directed. NOTE: a) GI Pipe for protection of earthing strip and earth strip beyond 7.5m shall be measured and paid seperately under relevant items.

Taking down unsv earthing lead and M&L for earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit / pipe or fixed to wall or any other indicated situation for loop earthing etc. as required of following sizes complete all as specified and as directed.

32 x 6 mm galvanised iron strip

25 x 4 mm galvanised iron strip

4 mm dia galvanised iron wire

25 x 3 mm copper strip

Scraping the old painted / rusted surfaces with emery paper / wire brush, applying one coat of red oxide primer, two coats of synthetic enamel paint of approved color on steel surfaces of any description, over 10cm in width or girth, not otherwise described.

Cutting and removing the damaged portion of the LT cable, supply, prepare and connect cable jointing kit for 1.1KV grade cable for cold shrink type straight through joint complete with jointing material and accessories suitable for XLPE, armoured aluminium conductor cable of size 4x16 Sqmm complete all as specified and as directed. Make:3M/Reychem/Dension. Note: Earth work will measured and paid seperately under relevant items.

All as per item No.78 here-in-before but for cable of size 3.5/4 x 25mm² to 3.5x50mm².

All as per item No.78 here-in-before but for cable of size 3.5 x 70mm² to 3.5x185mm².

Supply, mix and pouring the Magnesium sulphate either through the existing watering pipe or by making holes sorrounding the earth pit, at the rate of 5Kgs per pit, for charging the earth pit, for improving the ER values including measuring and recording the values.

Taking down unserviceable components of servo controlled voltage stabilizer of capacity upto 50/75 kVA and replacing the following components complete all as specified and as directed by Engineer-in-charge. Make: Power one or equivalent in Veener7/ Servomax

Control card

Variac for 50/75 kVA

Buck and boost transformer for 50 KVA

Mavee Syndicate

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OM SAI POWER SYSTEMS

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