REPAIR/REPLACEMENT OF 11 KV SUB STATIONS, VCBs/RMU, TRANSFORMERS AND ALLIED WORKS AT COAST GUARD STATION AT KAVARATTI, ANDROTH AND MINICOY ISLANDS UNDER GE (NAVY) LAKSHADWEEP

Repairs and servicing of HT 11 KV VCB/RMU of current rating upto 630Amps capacity type by drawing out breaker assembly from panel and carry out the following work :- (i) Cleaning/ decarbonising of all fixed and moving contacts, levers, springs using suitable cleaning agent and tightening of screws, nuts, bolts, spring etc, (ii) Adjust the trolley in and out mechanism. (iii) Lubricating/greasing of all operating mechanism and moving parts, switching & tripping mechanism, automatic shuttering system, necessary brazing, turning, polishing of main and auxiliary contact, demoisturing of insulators, etc to be done (iv) Checking all end terminals, tighting the nut bolt and washers, replace the unserviceable nut, bolt & washers, draw-in the breaker, put in position, engage the VCB/RMU with the supply system and testing for smooth functioning complete all as specified and directed by Engineer in charge. Note 1 :- Cost of unserviceable spare parts such as EFR, Aux relays, Vaccum interrupters, Fixed/Moving contacts, Battery backup etc. will be measured and paid under respective items. Note 2 :- Primary/Secondary injection Test Kit and Insulation testing equipment shall be arranged by the contractor and rate deemed to be included the unit rate.

Supply and Fix in replacement Earth fault relay suitable for HT 11 KV VCB/RMU including taking down old unserviceable one complete all as specified and directed by Engineer in charge.

Supply and Fix in replacement Auxilary relays suitable for HT 11 KV VCB/RMU including taking down old unserviceable one complete all as specified and directed by Engineer in charge.

Supply and Fix in replacement of vacuum interrupters 11KV with all fittings suitable for 11 KV HT VCB/RMU and testing complete all as specified and directed by Engineer in charge.

Supply and Fix in replacement of current transformer 20/5 A suitable for 11 KV VCB/RMU and testing complete all as specified and directed by Engineer in charge.

Supply and Fix in replacement of Potential Transformer with primary voltage 11KV and secondary voltage 110/220 V for 11 KV VCB/RMU and testing complete all as specified and directed by Engineer in charge.

Supply and Replacement of unserviceable Battery 12 Volts 150 AH including taking down unservisable battery complete all as specified and directed by Engineer in charge.

Disconnection and removing old unserviceable Power Pack unit, supply, installation & commissioning of Power Pack Input 230 V AC, Output 12 V DC suitable for 11 KV HT VCB/RMU Panel complete all as specified and directed by Engineer in charge.

Topping up / complete renewal of transformer oil having breakdown strength not less than 60 KV/Min for oil cooled Transformers complete all as specified and directed by Engineer in charge.

Supply and replace the silica gel for transformer of any capacity complete all as specified and directed by Engineer in charge.

Supply and Fix new Transformer Tap changer made of Brass/Copper material for regulating LT volage suitable for existing Transformer of any capacity including disconnection and removing unserviceable transformer tap changer complete all as specified and directed by Engineer in charge.

Disconnection and taking down the Transformer of any capacity from the existing position and transporting to work shop and opening the outer cover, draining out the oil and lifting the core along with winding, finding the faulty /burnout primary and secondary winding and rewinding with fine enameled insulated copper winding of same size/guage, turns keeping in hot air oven till the moisture evoporates, reassembling the transformer parts such as core, winding, outer cover, refilling back the Transformer oil complete and transporting back to its original position and reconnecting the LT/HT cable connections complete all as specified and directed by Engineer in charge.

Material and labour for cable jointing kit for 11KV grade cable for outdoor termination heat shrinkable type end termination 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 directed by Engineer in charge.

Material and labour for cable jointing kit for 11KV grade cable for outdoor termination heat shrinkable type end termination joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed by Engineer in charge.

Material and labour for cable jointing kit for 11KV grade cable for indoor termination heat shrinkable type end termination 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 directed by Engineer in charge.

Material and labour for cable jointing kit for 11KV grade cable for indoor termination heat shrinkable type end termination joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed by Engineer in harge.

Material and labour for cable jointing kit for 11 KV grade cable for straight through heat shrinkable 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 directed by Engineer in charge.

Material and labour for cable jointing kit for 11 KV grade cable for straight through heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed by Engineer in charge.

Material and labour for replacement of XLPE insulated, screen, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 3 core, 11000 volts, grade of the size 95 Sqmm complete all as specified and directed by Engineer in charge.

Material and labour for replacement of XLPE insulated, screen, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 3 core, 11000 volts, grade of the size 185 Sqmm complete all as specified and directed by Engineer in charge.

Excavation in trenches not exceeding 1.5 meter wide and not exceeding 1.5 meter depth for taking out/laying of cable and getting out in soft/loose soil complete all as specified and directed by the Engineer-in-charge.

Returning filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick in any type of soil complete all as specified and directed

Removing excavated material (Soil) to a distance n exc. 50 m and depositing where directed at a level n exc. 1.5 m above starting point complete all as specified and directed.

Material and labour for sand cushioning with sand in two layer, first layer of 80mm thick before laying of cable and second layer of 150mm thick after laying of cable in trenches/ducts for cable including consolidation of each layer complete all as specified and directed. Note:- Punned thickness only shall be measured for the purpose of payment.

Supply and laying unreinforced precast concrete cable cover class HV, Type I, flat, size 300x180x40 mm for HT cable all sizes complete all as specified and directed.

Supply and fix in repair of transformer LT side bushing/insulator with neoprene washer with terminal studs and bolt, nuts, etc complete all as specified and directed by Engineer in charge.

Supply and fix in repair of transformer HT side bushing/insulator with neoprene washer with terminal studs and bolt, nuts, etc complete all as specified and directed by Engineer in charge.

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