REPAIR, MAINTENANCE OF TRANSFORMER, HT VCB, PMU, HT PANEL, HT UG CABLE AND OTHER CONNECTED WORKS FOR DIFFERENT SUB STATIONS AT AF STN MADH ISLAND UNDER GE AF THANE

Amount

Excavation in trenches n. exc. 1.5 M in width and 1.5 M in deep for laying of pipes/ cables and getting out in Soft / loose soil complete all as specified and directed

Excavation in trenches n. exc. 1.5 M in width and 1.5 M in deep for laying of pipes/ cables and getting out in hard /dense soil complete all as specified and directed

Returning, filling in, including spreading, leveling, watering and well ramming in layers n. exc. 25 cmcomplete all as specified and directed

Removing excavated material n. exc. 50 M away, depositing as directed at level n. exc. 1.5 M above starting point complete all as specified and directed .

Supply and spreading in trenches clear dry sand for cable protection and punning down gently 10 cm below the cable and 15 cm above the cable all as specified and directed. Note :- Punning thickness only measured.

Supply and laying un reinforced precast concrete cable cover class HV, type -1, flat of size 300mm X 180mm X 40mm laid in trenches complete all as specified and directed.

Supply, Laying, connecting & testing of 95 Sqmm 11 KV Earthed HT UG XLPE Insulated cable with aluminum conductor multistranded grade in treches including lugs and cable glands of appropriate size including taking down of old unserviceable HT Cables complete all as specified and as directed

Supply and lay in trenches / along the wall / floor pipes GI light grade of size 100 mm with and including all fittings and accessories complete all as specified and and directed for cable protection complete all as specified and directed

S & F In repairs outdoor Heat shrinkable end termination kit for 11 KV (Earthed) grade cable complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 Sqmm to 95 Sqmm, including cutting and taking out of unserviceable cable end termination jointing kit complete all as specified and directed

S & F In repairs indoor Heat shrink end termination kit for 11 KV (Earthed) grade cable complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 Sqmm to 95 Sqmm, including cutting and taking out of unserviceable cable end termination jointing kit complete all as specified and directed

M & L for testing of 63KVA 11/.433 KV step down transformer for insulation resistence , Magnetic test and ratio test and trasformer oil for Acidity test and submit the test certifcate after testing complete all as specified and directed

M & L for testing of 100KVA 11/.433 KV step down transformer for insulation resistence , Magnetic test and ratio test and trasformer oil for Acidity test and submit the test certifcate after testing complete all as specified and directed

M & L for testing of 160KVA 11/.433 KV step down transformer for insulation resistence , Magnetic test and ratio test and trasformer oil for Acidity test and submit the test certifcate after testing complete all as specified and directed

M & L for testing of 300KVA 11/.433 KV step down transformer for insulation resistence , Magnetic test and ratio test and trasformer oil for Acidity test and submit the test certifcate after testing complete all as specified and directed

Equipment labour for filtration of transformer oil as in topping up by filtartion plant to remove moistrure and carbon contentents to achive dielectric strength of oil up to 50KV in 4mm gap and producing test result on recordes before and after filtartion and including Disconnecting the HT and LT cables and cleaning the bus bar surfaces and reconnecting the cables by providing copper washers, bolts, nuts etc all as dirctected Note - Oil required for topping up while for filtaration will issued under respective item of Sch A .

Supply only transformer oil to be incorporated in item No 15 above IS -335 and all as directed

M&L for prepration of old painted surface of transformer 11KV/415 Volt 50 KVA to 160 KVA , including removing of any oil spillage, and applying two coat of anti corrosive paint of shade as per existing all as directed

M&L for prepration of old painted surface of transformer 11KV/415 Volt 300 KVA , including removing of any oil spillage, and applying two coat of anti corrosive paint of shade as per existing all as directed

M & L For taking out unserviceable LV bushings and replacing LV Bushings with copper/brass stud complete with rubber gasket, brass bolts, brass nuts all for 11KV/0.433 KV transformer of rating upto 300 KVA complete all as specified and directed

M & L For taking out unserviceable HV 11 KV bushings and replacing HV 11 KV Bushings with copper/brass stud complete with rubber gasket, brass bolts, brass nuts all for 11KV/0.433 KV transformer of rating upto 50 KVA to 300 KVA complete all as specified and directed

Supply & Fix in Replacement Silica Gel Breather with silica gel for 11 KV Transformer of Rating from 50 KVA to 500 KVA complete all as specified and directed

Supply and fix in replacement of Brass gate Valve size 40mm including switch off electric supply of incoming and out going of the trnsformer drain out all oil complete oil from main tank stored to suitable container taking out non-functional gate valve from existing drain out system with suitable size end cap including refilling of transformer oil up to mark lavel of transformer capacity 50 to 300 KVA complete all as specified and directed .

Supply ans fix in replacement of LT insulator 1100 volts grade suitable for transformer 50 to 300 KVA 11/0.433 KV complete all as directed

Supply ans fix in replacement of HT insulator 11000 volts grade suitable for transformer 50 to 300 KVA 11/0.433 KV complete all as directed

Supply and fixing earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn into conduit/pipe or fixed to poles or any indicated situation for loop earthing etc Galvanised Iron strip 32mmx6mm and includidng taking out unserviceable GI strip of any sizes complete all as specified and directed

M&L for MS chequered plates of not less than 6 mm thick of sizes as per site requirement incl cutting , welding of strip on the edges for proper fixing and provn of handles for lifting & fixing arrangement as shown & directed.incl taking out the old & unserviceble chequered plates.including one coat of primer & 2 coats of synthetic enamelled paint of approved colour all as directed.

Servicing and maintenance of HT 11KV Switch SF 6 panels decorbonising of all contact points including greasing of the moving parts,cleaning of the moving/Stationary contact with CTs, Removing of moisture by means of hot air blower,general servicing of the switchgear,renewal of gaskets,nuts/bolts etc complete including testing of the switch gear after repairs and including relays calibration and tsting of all relays with setting with connected load complete all as directed Note :- 1. Each switch gear/Load break switch/breaker shall be counted as a separate unit for the purpose of measurement. 2.Servicing shall be carried out after every Six month period all as directed e . 3. Proper take care shall be taken to isolate the supply and it shall be ensured that repairs are carried out on No LIVE switch gears. 4. During this period any megger values with test certificate should submitted.5.Checking of all electrical connection for its proper tightness. 6.if in case any brakedown the service engineer attened the brake down immiediately and make the HT Switch Gear serviciable with in 8 working hours.

Supply and fix in repairs HT Barrel fuses 11 KV grade of following ratings current carrying capacity complete all as directed

Sagar Electricals (BID ID -3273429)