REPAIR AND MAINT OF TRANSFORMERS, GODS, VCBS AND OTHER CONNECTED ALLIED WORKS AT SUNJUWAN UNDER GE JAMMU

Amount

Testing, Checking and tripping of Vacuum circuit breaker through IDMT over current and earth fault microprocessor based relay intented in service by primary current injection in CT and setting time of relay at required overload and earth to ensure proper function of relays trip coil, control circuit etc during fault condition, complete all as specified and directed.

Maintenance and complete servicing of HT VCBs including re-assembling of operating machanism parts, well cleaning with petrol CRC 226, replacing unserviceable parts and accessories like spring, gasket, coils, nuts, bolts and washers etc oiling and greasing of moving parts, re-assembling, fine setting of mechanism, well cleaning and de-carbonizing of arc control pot, fixed and moving contact including checking, testing, tripping check of HT VCBs making perfect operation in manual and electric mode including maintenance and well cleaning the complete panel board bus bars, de-carbonizing all joints, bus bar, CTs metal parts, replacing unserviceable parts and components etc, complete all as specified and directed. Note : Spares parts for VCB to be measured and paid seperately under resspective items of this schedule.

Supply only spring charging motor of Make as per existing brand, complete all as specified and directed.

Supply only closing coil 30 Volts DC as per eixisting Make and size, complete all as specified and directed.

Supply only tripping coil 30 Volts DC as per eixisting Make and size, complete all as specified and directed.

Supply only vacuum interupter for existing VCB as per eixisting Make and size, complete all as specified and directed.

Supply only control wiring kit for metering, motor charging, indicator lamps and relays etc, complete all as specified and directed.

Supply only Motor charged mechanism assembly with close/trip coil & charging handle of existing size and capacity, complete all as specified and directed.

Supply only Epoxy resin supporting Insulators of height 140 mm and 65 mm dia, complete all as specified and directed.

Supply only Bushing spout (VCB 11 KV) for HT breaker with copper bus bar, complete all as specified and directed.

Supply only VCB Panel space Heaters, complete all as specified and directed.

Calibration of digital/IDMT protective relays of 33 KV panel testing of 33 KV control and relay panel includes testing of main protection (differential relay). Backup protection (O/C and E/F) relay for all features like differential current, REF, inverse O/C, Inverse E/F, high set O/C, high set E/F and their time of operation etc along with pickup and dropoff volts for all auxillary relays like master trip, trip circuit supervision transformer aux relays (Alarm trip function) and preparing inspection data sheet of existing 33 KV control panel re-programming input data into relays ( OCHS,EFHS,OCLS, EFLS, CTR, TDS etc) complete testing by injecting current in CT primary and measure secondary current at 33 KV control and relay panel for metering protection relay plug settings intended in service through current injection in CT primary and ratio including complete polarity test, complete all as specified and directed. Contd to Srl Item No 3.01

Note: (i) All testing shall be carried out in presence of Engr-in-Charge and test certificate shall be provided and nothing extra shall be paid for testing by the department and cost of the same shall be included in rate quoted by the contractor.

Supply and fixing in replacement of Ampere meter analog type of size 50x50 mm, range from 0-100 for 33 KV control panel, complete all as directed by Engr-in-Charge.

Supply and fixing in replacement of Volt meter meter analog type of size 50x50 mm, range from 0-40KV, for 33 KV control panel, complete all as specified and directed.

Supply and fixing in replacement of Power factor meter analog type of size 50x50 mm, range from 0-1 for 33 KV control panle, complete all as specified and directed.

Supply and fixing in replacement of numerical over current/earth fault protection relay Ashida ADR 131A,Model No AM110-01-01, complete all as specified and directed.

Supply and fixing in replacement of Alram Annuciator for 33 KV relay panel comprising of O/C protection operator E/F protection operator Tripping relay operator,Tripping circuit-1 fault,Tripping circuit -2 fault and O/C &E/F relay fault, complete all as specified and directed.

Supply and fixing in replacement of Electronic hooter for 33/11 KV relay panel, complete all as specified and directed.

Auxilary relay rating 30V DC for 33 KV relay panel, complete all as specified and directed.

Master trip relay ER type B-24 rating 30V DC for 33 KV relay panel, complete all as specified and directed.

Opening top cover from transformer of capacity 40 KVA to 500 KVA at site for replacement of old unserviceable spares/components and reassembling and testing, complete all as specified and as directed Note : Spares parts to be measured and paid seperately under resspective items of this schedule.

Supply and fixing in replacement of HT brass / gun metal bush connecting rod of suitable length and dia with necessary nuts, washers and bushing packing to prevent oil leaking from the bushes and HT insulators including making necessary connections for transformer capacity from 40 KVA to 400 KVA, complete all as specified and directed.

Supply and fixing in replacement LT brass / gun metal bush connecting rod of suitable length and dia with necessary nuts, washers and bushes and LT insulators packing (Gasket) to prevent oil leaking from the bushes including making necessary connections for transformer capacity from 40 KVA to 400 KVA, complete all as specified and directed.

Supply only top cover gasket set as per existing size and shape complete for 40 to 400 KVA capacity transformers, complete all as specified and directed.

Supply only breather for transformer up to 500 KVA capacity complete with initial filling of silica gel, complete all as specified and directed.

Preparation of old painted steel or iron surfaces of transformer of any capacity by scrapping with steel wire brush/scrapper emery paper, etc. and applying two coats of synthetic enamel smoke grey paint over a coat of red oxide primer (painting shall be done by spray machine) including writing of SM No, MES No etc. at prominent place/location of transformer with black synthetic enamel thick paint in white back ground complete all as specified and directed Note: Necessary shut down of power supply should be taken from the Engr-in-Charge by the contractor before proceeding the work, also electric supply should be restored as early as possible after completion of the work.

Transformer capacity 40 KVA to 100 KVA

Transformer capacity 125 KVA to 200 KVA

Transformer capacity 250 KVA to 500 KVA

Supply, filling and toping up new transformer oil for filling/toping up oil of transformer up to desired level, complete all as specified and as directed. Note: Dielectric strength of oil should not be less than 50 KV complete all as specified and directed.

Dehydration and filtration of existing transformer oil of transformer at different location in site with filtration machine and heating system to get Di-electric strength of oil 45KV minimum without disturbing the power supply system, complete all as specified and as directed.

Disconnecting the 1.5 MVA power Transformer, 33/11 KV from electric and earth connection, taking down carefully from four pole structure / platform, by any means of mechanically operated pulley/ mechanical crane, transportation to MES store Yard / workshop and factory for repair/maint and with and including opening the top cover of transformer, draining out oil in clean barrels, dismantling of cover and taking out the defectiv/burnt out HT/LT coils, cleaning the tank and getting out the dust particles and replacing old defective coils with new coils, refitting the top cover and other accessories such as providing sundry items and reassembling after repairs to the entire satisfaction of the Engr-in-Charge and making the transformer absolutely leak proof, pouring oil in the transformerre including heat treatment, connecting of all the electrical connections and other accessories and transporting back of transformer to existing places to MES store yard or other existing substaions after repair & hoisting / lifting and placing in position and securing properly on pole mounted/plinth ......contd to item No-20.01

mounted making all electrical connections testing of transformer on load atleast 12 hrs after repair, complete all as directed by Engineer-in-Charge. Note :- (i) If any damage to transformer/OH line/cables occur during handling, transportation or during hoisting / lifting, the same will be rectified by the contractor without any extra cost to the department. (ii) Transportation to workshop and back to site /and required T&P like crane etc are to be arranged by contractor and rate for which is deemed to be included in the item. (iii) If retrieved transformer oil's di-electric strength is very less, then it will be replaced with new one .as directed by Engineer Incharge and same will be measured and paid under relevent item. (iv) If any items like winding of HT coil, reconditioning of LT coil, spares like breather, silica jel to be replaced for smooth functioning of transformer shall be measured in relevent items. (v) Any minor item like nut, bolt, glass Sleeves/ ebonite sleeves insulating material tapes are included in this item rate.

Rewinding of HT coils Transformer 1.5 MVA 33/11 KV with super enamelled double paper wound copper winding wire of existing size and No of turns alongwith insulating material like leathrorised paper insulation cotton tape, wooden block packing, varnishing etc, demoisturing by heating and drying etc including primaray testing, ratio testing, no load testing, core bolt insulation tesing, complete all as specified and directed. Note: Rewinding and testing of transformer to be carried out through approved firm.

Rewinding of LT coils Transformer 1.5 MVA 33/11 KV with super enamelled double paper wound copper winding wire of existing size and No of turns alongwith insulating material like leathorised paper insulation cotton tape, wooden block packing, varnishing etc, de-moisturing by heating and drying etc including primary testing, ratio testing, no load testing core bolt insulation tesing, complete all as specified and directed by Engr-in-Charge. Note: Rewinding and testing of transformer to be carried out through approved firm.

Material and labour in replacement of 33 KV Bush Rods as per exisiting size, complete all as specified and directed.

Material and labour in replacement of 11 KV Bush Rods as per exisiting size, complete all as specified and directed.

Disconnection of HT/LT connection, earthing lead and taking down carefully defective Transformer of capacity of 50 to 500 KVA, 11 KV/440Volt from 2/4 pole structure/Platform including transportation to factory workshop and draining out existing transformer oil, opening the top cover of the transformer, by removing nut, bolts, washer etc and lifting the core and winding by using tripoid and chain pulley after removing LT/HT spindle with bushing and cleaning the yoke and winding/core and spindle bushing the same winding/core and spindle bushing and replace the worn out nut, bolts, washer gaskets etc with provision of cork sheets of 6mm thick (best quality) and filling the transformer oil which was removed earlier, through stream line filter after dehydration and back to site after necessary repair and lifting of Transformer to its original position including necessary testing, complete all as specified and directed.

Rewinding of HT coil of transformer any capacity using proper size DPC copper wire and HT insulation material suitable for working voltage 11 KV, complete all as specified and directed.

Rewinding of LT coil of transformer any capacity using proper size DPC copper wire and HT insulating material suitable for working voltage 11 KV, complete all as specified and directed.

Material and labour in replacement Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed including two coats of aluminium paint over a coat of red oxide zinc chrome primer including preparation of surfaces complete all as specified and directed.

Material and labour in replacement aluminium conductor, steel reinforced (ACSR) of any size as approved on HT/LT Poles including straining, binding to insulators with copper binding wire with connectors, etc, providing PVC sleeves for jumpers as in OH conductors complete all as specified and as directed.

Stretching and tightening of serviceable ACSR conductor for overhead lines of any size on LT poles including provisioning of necessary copper binding wire, connectors, PVC sleeves for jumpers etc complete all as specified and as directed.

Material and labour in replacement Galvanised steel continuous earth wire 4mm dia complete including removing unserviceable materials from site(s), complete all as specified and directed.

Material and labour in replacement Cradles, hexagonal/rectangular, fabricated with galvanised steel wire 4mm dia, complete all as specified and directed.

Material and labour in replacement fixing and connection of lightening arresters non linear resistor type complete with all fittings, transmission class, discharge capacity 10 Kilo Amp of rating 11 KV complete all as specified and as directed.

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

Disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown or green, Single disc assembly for tension with tension clamps for conductors, working pressure 11000 volts grade, complete all as specified and directed.

Supply and laying and testing cable XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured electric power cable (heavy duty) with stranded aluminium conductor,11000 volts grade of size 3 core 95 sq mm, complete all as specified and directed.

Cable jointing kit for 11 KV grade cable for out door termination cold shrink type joint completewith jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm, complete all as specified and directed.

Supply and install in replacement, Switch air break gang operated out door type HT 11 KV triple poles 200 Amps air break fittings type with fixed contacts of phosphorus bronze and moving contacts of copper with mechanically operating from ground level vertical mounted complete with HT insulator on mild steel frame operating rod made out of 25mm bore GI pipe medium grade with 12 insulators with test certificates with locking arrangement and nuts,bolts,washers etc of required size with 03 Nos drop out expulsion type fuse of capacity 200 Amps to suit the load at site including two coats of aluminium paint over a coat of red oxide primer over MS work and making connection, complete all as specified and directed.

Cable jointing kit for 11000 Volts grade (E) cable indoor termination heat shrinkable type joint complete with jointing material suitable for 3 core XLPE armoured aluminium joint conductor cable of size 120 to 185 Sqmm and jointing materails for making joints and testing, complete all as specified and directed.

Cable jointing kit for 11000 Volts grade (E) cable outdoor termination heat shrinkable type joint complete with jointing material suitable for 3 core XLPE armoured aluminium joint conductor cable of size 120 to 185 Sqmm and jointing materails for making joints and testing, complete all as specified and directed.

Copper Earthing complete with copper earth plate electrode 600x600x3.5mm thick buried directly in ground earth pit not less than 3.5mtr deep below normal ground level with top edge of the plate not less than 2.6 mtr below ground level connected to copper strip of size 32x6 mm by mean of nut/bolt and washer of tinned brass,protected by galvanized iron pipe 40 mm 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 42x42x10 cm 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,including charcoal or coke and salt in alternate layers and filling earth pit with fresh vegetable soil below copper plate and above upto ground level as required and necessary earth work in hard/dense soil, complete all as specified and directed. Contd to Srl item No 41.01

Note :- (i) The cost of earth resistivity test deemed to be included in quoted rate. (ii) Earth resisitance value shall be less than 1.0 Ohm.

Copper strip of size 32x6 mm incl necessary nut and bolts, complete all as specified and directed

ASHOKA ENGINEERS AND BUILDERS

M/S S K Electricals Regd