DEHYDRATION OF TRANSFORMER OIL VCB SERVICING CALIBERATION OF RELAY CONNECTED WORKS AT INA EZHIMALA

Amount

M&L for filteration and dehydration of transformer oil using filteration plant and testing the die-electric strength of transformer oil and achieving the result of 60 kV and submitting the test report, providing neccessary stand by DG set required for the power supply of the machine where supply canot be provided will be the responsibility of the contractor complete all as specified and as directed.

Supply and topping up of transformer oil conforming to IS 335 in transformers and oil circuit breaker complete all as specified and as directed. Note:- Test certificate from the manufacturer should be produced.

M&L for spreading and levelling 40 mm graded aggregate in layers not exceeding 15 cm thick including ramming in yard complete all as specified and as directed.

S&F silica gel breather complete set upto 1600 kVA transformer complete all as specified and as directed.

M&L for replacement of silica gel of transformer breather complete all as specified and as directed.

M&L for removal and replacement of burnt out defective HT copper coil of transformer of any capacity with new by rewinding with suitable gauge of super enamelled copper wire of high quality matching with the existing impendence and insulated complete all as specified and directed by Engr-in-Charge.

M&L for removal and replacement of burnt out defective LT copper coil of transformer of any capacity with new by rewinding with suitable gauge of super enamelled copper wire of high quality matching with the existing impendence and insulated complete all as specified and directed by Engr-in-Charge.

M&L for draining out of oil up to the bottom level of transformer and opening of HV and LV bushings of transformer capacity 11kv/433volt capacity upto 250kVA step down transformer of any make for replacing the all mounting gaskets of the transformer body and conservator to arrest the oil leakage and replacement of gasket HT/LT terminal bushing gasket/bushing and rectifying oil leakage and making all connections complete all as specified and as directed. Note:- HT/LT bushes, oil and brass rod will be measured and paid separately.

All as per item no.8 above but of capacity 315kVA to 750 kVa complete all as specified and as directed.

All as per item no.8 above but of capacity 1000kVA to 1600 kVa complete all as specified and as directed.

Supply and fixing 11 kV HT terminal procelain bushing suitable for upto 250 kVA transformer (including suitable brass stud as per site requirement) including taking down the existing unit complete all as specified and as directed.

All as per item no.11 above but of capacity 315kVA to 750 kVa complete all as specified and as directed.

All as per item no.11 above but of capacity 1000kVA to 1600 kVa complete all as specified and as directed.

Supply and fixing 11 kV/433 volt LT terminal porcelain bushing suitable for upto 250 kVA transformer including suitable brass stud as per site requirement including taking down the existing unit complete all as specified and directed by Engr-in-charge.

All as per item no.14 above but of capacity 315kVA to 750 kVa complete all as specified and as directed.

All as per item no.14 above but of capacity 1000kVA to 1600 kVa complete all as specified and as directed.

Supply and fix in replacement of 11 kV /433 Volt transformer diaphragm of capacity 1000kVA to 1600 kVA as per site requirement complete all as specified and as directed.

Supply and fix in replacement of 11 kV /433 Volt transformer expulsion fuse unit complete all as specified and as directed.

Supply and fix in replacement of oil temp guage for 11 kV 433 Volt transformer up to 1600kVA as per site requirement complete all as specified and as directed.

Material and labour for earthing complete using copper plate 60 x 60 cm x 3.15 mm thick electrode buried directly in ground(earth pit not less than 2.25 mtr below normal ground level) with top edge of the plate not less than 1.5 mtrs below normal GL, connected to and including copper earth lead Strip of size 20 x 3 mm upto 7.5 m distance and connected by means of bolts,nuts,checknuts and washers of galvanized iron or steel all as shown in electrical plate No.3 in SSR connected to earthing test point all as specified complete with excavation, earth work in any strata, charcoal, salt , pcc chamber,20mm thick RCC cover (grade M 15) complete having suitable handle (10mm MS Rod) , 20 mm dia medium grade GI pipe for watering with GI funnel & wire mesh and 40mm bore GI pipe light grade for protection of earth lead conductor with testing and connecting up complete all as specified and directed by Engr-in-charge.

Material and labour for fixing in repair aluminium strip 25 x 3.15mm with saddles and fixing screws etc. for earthing strip of transformer and LT panel complete all as specified and as directed by Engr in charge.

Material and labour for handling, loading, unloading and transportation of unserviceable burnt out transformer of any capacity from the site to the nearest workshop and loading back from workshop, transportation to the site with transformer after repairs, unloading and installation at site complete all as specified and as directed.

M&L for applying two coats of synthetic enamel paint by spray paint after preparation of the entire body of transformer by removing rust deposited completely, transformer capacity upto 250 KVA and marking SM/MES No installed in substations complete all as specified and as directed.

All as per item no.23 above but of capacity 315kVA to 750 kVa complete all as specified and as directed.

All as per item no.23 above but of capacity 1000kVA to 1600 kVa complete all as specified and as directed.

Supply and jointing cable end termination joint, heat shrinkable type, suitable for 3 core 95 Sqmm, HT 11 KV (Earthed) XLPE, insulated cable, indoor type with all connected accessories and jointing materials complete all as specified and directed by Engr-in-charge.

All as per item no 26 above but of size 300 sqmm complete all as specified and as directed.

Supply and jointing straight through cable jointing kit HT 11 KV (Earthed) grade, straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete all as specified and as directed.

All as per item no 28 above but of size 300 sqmm complete all as specified and as directed.

Supply and fix in replacement of lightning arrestor expulsion type complete with all fittings and transmission class discharge capacity 65 kilo amps suitable for 11000 V grade (Each set of three) complete all as specified and as directed.

Material and labour for servicing/cleaning/testing of HT 11kV VCB of capacity upto 630Amp of any make and type , by taking proper shutdown & isolating the HT electric supply & taking out the trolley including servicing of all minor/ major parts of the VCB by cleaning isolating contact moving parts, removing dust particles, rust from the busbar spout gear mechanism, repair to motor spring charge mechanism, including cleaning/greasing/aligning of wheels and rails of trolley/busbar, tightening of all nuts bolts of entire trolley component and replacing minor spares such as tripping coil/closing coil/worn out rack in rack out gears etc. complete all as specified and directed by Engr-in-charge.

Material and labour for general servicing to HT 11kV Fuse failure relay/Aux Relay complete all as specified and directed by Engr-in-charge.

Material and labour for servicing/testing/calibration of HT 11kv relays ensuring of breaker tripping through relay by simulation CDG CDD complete all as specified and directed by Engr in charge. Note:- a)Test certificates has to be produced after testing/calibration. b) Cost of the T&P required for primary injection & secondary injection test etc is deemed to be included in the quoted rate.

Supply and fix in replacement of indicator lamp LED type for CB on Red/Green / Amber/White/Blue 110V DC required as per site requirement complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of spout for 11KV VCB and bus bar side as on site carrying part complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of HT bus supporting insulator for HT 11 KV VCB 630/400 Amps as per site requirement including taking down the existing one complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of HT 11 KV VCB supporting insulator as per site requirement including taking down the existing one complete all as specified and directed by Engineer-in-Charge

M&L for preparation of surface of VCB panel for making painting by scrapping out old painted surface and applying one coat of red oxide primer and one coat of epoxy paint inside the HT panel complete all as specified and directed by Engineer-in-Charge.

Supply and fix in repair/replacement of electronic hooter 110 V DC in the HT 11kV panel by making necessary modification complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of digital ammeter 0 to 400 Amps of existing size flush type complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of digital frequency meter of existing size flush type as per site requirement complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of digital power factor meter of existing size flush type as per site requirement complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of digital volt meter 0 to 12000 Volts range of existing size flush type complete all as specified and as directed.

Supply and fix in replacement of panel heater(space heater) 80W complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of vaccum bottle suitable for HT 11Kv VCB as per site requirement suitable for 11 KV 630/400 Amp VCB complete all as specified and directed by Engineer-in-Charge.

M&L for repair/replacement of PT 11 KV suitable to VCB 11 KV 600/400 Amps mounting on top draw out type metering and protection ratio 11KV /110 volt/ /110/3 VA class LV1: 200/ 1.0,LV2:100/3P as per site requirement complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of current transformer epoxy type upto ratio:- 400/200/100/5-5A suitable for 11 KV VCB 630/400 Amps capacity requirement. Burden Of CT shall be core 1:15 VA/1.0, core 2 : 15 VA5P10 complete all as specified and directed by Engineer-in-Charge.

M&L for fixing in replacement of rubber beading for HT panel complete by using proper binding materials all as specified and directed by Engineer-in-Charge.

M&L for providing louver of size of 15 cm x 10 cm or equivalent size as per site requirement in HT panel by making necessary modifications in the existing panel complete all as specified and directed by Engineer-in-Charge.

Material and labour for cleaning of the HT 11 kV bus bar surfaces by removing the oxide formation around the busbar and insulating the entire surface of busbar using HT 11kv heat shrinkable sleeve complete all as specified and as directed by Engr-in-charge.

Supply and fixing in replacement of aluminium strip suitable for 11KV HT bus bar, VCB as per site requirement complete all as specified and directed by Engr in charge.

Supply and fix in repair/replacement of control wiring for HT 11kV panel for complete relays and other connected items matching with existing gauge and colour code as per site requirement complete all as specified and directed by Engr-in-charge.

M&L for repair/replacement of tap change mechanism suitable for 1000 KVA transformer 11kV/433V by taking HT shutdown and disconnecting HT supply and LT supply and opening the top plate of transformer, checking all bushes (HT and LT sides) and changing tap change mechanism and testing calibration and commissioning complete all as specified and directed by Engineer in charge.

Supply and fix in replacement of VCB 32 Pin plug set (male and female) required as on ground for HT 11kv panel VCB complete all as specified and directed by Engineer-in-Charge.

Supply and fix handle set suitable HT 11kV VCB for rack in rack out mechanism and for spring charging, suitable for existing VCB of any make and type complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement with calibration of digital Non directional Over current and Earth fault Protection Relay by making necessary modifications in the existing HT 11kV panel as per site requirement complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement with calibration of digital Directional Over current and Earth fault Protection Relay by making necessary modifications in the existing HT 11kV panel as per site requirement complete all as specified and directed by Engineer-in-Charge.

Supply and fix single pole non directional tripping relay type VAJ H13(VAJH13) VCB complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of HT 11kv VCB finger contact to connect between VCB and spout complete all as specified and as directed by Engr-in-charge.

Material and labour for servicing using authorised service person for HT VCB/LBS in 11kv SF6 insulated outdoor type RMU of any make, by cleaning, applying grease and changing minor worn out spares such as nuts, bolts, gears etc and making smooth opeartion complete all as specified and directed by Engr-in-charge.

Supply and fix in replacement of exhaust fan plastic body AC single phase 230/240 volt of size 200mm sweep fixing on HT VCB panel by making necessary modifications in the existing panel and making connections from the nearest source using 3core 1.5 sqmm copper conductor complete all as specified and directed by Engr-in-charge.

Saket Enterprises

PHEJAYS AGENCIES

Benchmark Engineers and Contractors

UNIVERSAL ENGINEERING

Sreekrupa Enterprises