REPAIR TO TRANSFORMER INCLDEHYDRATION AND ALLIED WORKS AT PANGODE MILITARY STATION TRIVANDRUM

Amount

Supply and topping up of new insulating transformer oil(ISI mark) and filling after dehydration of transformer oil having di-electric strength not less than 60 KV.

Dehydration, filtration and topping up of transformer oil to achieve dielectric strength not less than 40 KV complete all as specified for the following transformers including testing of transformer oil after filtration. (a) Transformer 400 KVA-01 No (b) Transformer 315 KVA-01 No (c) Transformer 250KVA-01 (d) Transformer 200 KVA-05 Nos (e) Transformer 125 KVA-01 No (f) Transformer 100 KVA-03 Nos

Removing grass , bushes and creepers growing at transformer yard,LT panel board ,two pole structures and four pole structures and,keep the yard area and sorrounding neat and clean complete all as specified and as directed.

S&F in repair MCCB 3 pole 100Amps rating breaking capacity 25 KA 415 volt in the existing feeder pillar box including any addition /alteration to the panel to accomodate the new MCCB making connections with 25x3 mm copper strip as required from main bus bars making necessary welding work, metal work for fixing base plate etc and connections all as specified. Make: Indo Asian Cat Part No.830052 or equvilent in havells / legrand

All as per item No 4 here in before but 125 Amps rupturing capacity 25 kAMake: Indo Asian Cat Part No.830053 or equvilent

All as per item No 4 here in before but 160 Amps rupturing capacity 36 kA. Make: Indo Asian Cat Part No.830115 or equvilent

All as per item No 4 here in before but 250 Amps rupturing capacity 36 kA.Make: Indo Asian Cat Part No.830117 or equvilent

All as per item No 4 here in before but 400 Amps rupturing capacity 36 kA .Make: Indo Asian Cat Part No.830176 or equvilent

Disconnecting HT/LT connections of the pole mounted/plinth mounted out door type/indoor type transformer, opening up the top cover to carryout repairs at site, including draining out oil from the transformer in suitable container and to carryout the transformer for repair such as replacement of gasket, HT/LT side brass studs bushing ,cork sheet, breather, temperature gauge ,gate valve,silica gel and refilling the oil all as specified and as directed. Note: The materials required for repair/replacement has been cattered as sopply only here in after.

Supply only new cork sheet gasket 5 mm thick superior quality on top cover plate of the transformer capacity 100 KVA to 315 KVA.

Supply only LT bush assembly brass complete with double check nuts, washers and oil seal all accessories without bushing insulators for transformer capacity 100 to 125 KVA.

Supply only LT bush assembly brass complete with all accessories with out bushings insulators for transformer capacity 200 to 315 KVA

Supply only HT bush assembly brass complete with double check nuts, washers and oil seal all accessories without bushing insulators for transformer capacity 100 KVA to 125 KVA.

Supply only HT bush assembly brass complete with double check nuts, washers and oil seal all accessories without bushing insulators for transformer capacity 200 KVA to 315 KVA.

Removing moistured silica gel complete and supply new silica gel including cleaning of breather assy complete all as specified

Supply and spread loose filling with stone aggregates of gauge 63 mm inside the fencing of two pole structure/four pole structure transformer yard with a layer thickness of 150mm complete all as specified.

M&L in repair lightening arrestor expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp suitable for 11000 Volts including brackets, clamps, nuts, washers and connecting to earth wire 4mm dia GI wire complete all as specified.

Supply and fixing in repair switch air break, gang operated, triple pole, mechanically operated, mounted on insulator and steel frame, with operating mechanism worked from ground level, having current rating upto 200 Amps for working pressure 11000 Volts with drop out type fuses (three numbers of 40 Amp capacity) incl applying grease for male /female contact and replacement of burnt termination grips all as specified and as directed by the Engineer-in-Charge.

M & L for repair gang operated switch air break of any type / capacity , servicing to the loading arrangement , applying grease to all joints for smooth operation including replacement of burnt male / female contact,tapping arrangements if any complete all as specified and as directed by the Engineer-in-Charge.

M&L in replacement for earthing galvanised steel earth plate electrode 600X600X6.00mm thick burried directly in ground (earth plate not less than 2.25 mtr deep below normal ground level with top edge of the plate less than 1.5 mtr below normal ground level) connected to GI strip 25x4mm by means of bolts, nuts, check nuts, and washers, of galvanised iron or steel including GI pipe light grade 40 mm bore for protection of earth lead,GI funnel and wire mesh etc complete all as shown in Electrical plate no 5 of SSR 2009(part- I)including necessary excavation earth work, form work.earth pit of size 450X450X300 mm of PCC M-15 (Nominal mix)using stone aggregate earth pit cover of PCC and 20 mm bore light grade GI pipe for watering and charcoal dust,common salt, and connected to test point 7.5 mtr from earth pit including testing complete all as specified and as directed.

Supply and fix in repair showing incoming/outgoing 11 KV feeder plates of size 30cm x 20 cm made out of 1.6mm thick mild steel sheet, vitreous enameled paint with letters written in local language and English including figures and fixed with FI MS clamp duly painted size 25x3mm, with bolts, nuts and washers

Disconnecting the HT electric supply from PCC two pole structures and M&L for applying two coat of aluminium paint including preparation of steel surface of all cross arms/channels angle iron bracing. Preparation of surface of HT poles by removing flaking particles for smoothness and M&L for applying two coat of acrylic exteriors emulsion water proofing paint on PCC poles.

All as per item No 22 here in before but PCC four pole structure

Disconnecting the HT electric supply from steel tubular two pole structure and M&L for applying two coat of aluminium paint over a coat of red oxide including preparation of steel surface of all cross arm/ channels angle iron bracings and steel tubular poles.

All as per ser item 24 here in before but steel tubular 4 pole structure

M&L for preparation of existing plastered surface and applying two coat of Acrylic exteriors emulsion water proofing paint on concrete poles and platform of transformer.

Painting plinth/pole mounted transformer, Scrapping/cleaning of outer surfaces of transformer and spray painting with two coats of best quality super enamel synthetic paint over one coat of red oxide primer complete including writing of SM/MES No upto 400 KVA capacity transformer of any make/shape/size all as specified and as directed by Engr In Charge.

M&L in replacement of Synthetic insulation mat for electrical purposes of size 2mx1mx19mm thick

M&L in replacement of Synthetic insulation mat for electrical purposes of size 2mx1mx12mm thick

Supply and fix in repair of Danger notice plate 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with FI MS clamps 25x3mm with, bolts and nuts of approved size, for HT, 20 X 15 cm size.

M & L for preparation and scrubbing out rust surface of indoor/outdoor type LT panel board applying two coats of synthetic enameled paint over a coat of red oxide primer spray painting complete all as specified directed .

S&F in repair LT panel for Madras Officer's Mess sub station & EME MT sub station, installing, testing and commissioning, factory made and tested (incl CPRI type test certified), LT feeder pillar box (KIOSK), outdoor type, platform mounted, suitable for 415 volts 3 phase 4 wire, 50 HZ AC supply system with powder costed finish , front opening type .The panel shall be dust,weather and vermin proof, IP 65 class protection and made of CRCA MS sheet 3.0 mm thick for outer shell and 2 mm thick for inner shell having TPN Aluminium bus bars of rating 400 A supported on SMC insulators , bottom base channel of MS section not less than 100 mmx 50 mm x 5 mm thick , entire panel shall have a common aluminium earth bar of size 25 mm x 5 mm at the rear with 2 nos earth stud, solid connections from main bus bar to switch gears with required size of copper bus bars and control wiring with min 1.5 sqmm PVC insulated copper conductor cable .The panel shall be mounted on suitable PCC foundation.

S&F in repair LT panel for Cariappa Auditorium sub station, installing, testing and commissioning, factory made and tested (incl CPRI type test certified), LT feeder pillar box (KIOSK), outdoor type, platform mounted, suitable for 415 volts 3 phase 4 wire, 50 HZ AC supply system with powder costed finish , front opening type .The panel shall be dust,weather and vermin proof, IP 65 class protection and made of CRCA MS sheet 3.0 mm thick for outer shell and 2 mm thick for inner shell having TPN Aluminium bus bars of rating 400 A supported on SMC insulators , bottom base channel of MS section not less than 100 mmx 50 mm x 5 mm thick , entire panel shall have a common aluminium earth bar of size 25 mm x 5 mm at the rear with 2 nos earth stud, solid connections from main bus bar to switch gears with required size of copper bus bars and control wiring with min 1.5 sqmm PVC insulated copper conductor cable .The panel shall be mounted on suitable PCC foundation.

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