REPAIR AND MAINTENANCE TO TRANSFORMER, VCB, HT PROTECTION SYSTEM AND HT CABLES AT AF STN UTARLAI

Amount

M&L for disconnecting of 150 KVA to 250 KVA capacity defective transformer (indoor/outdoor type ) 11 KV/433 volts copper/ wound from power mains and dismantling the same from 2/4 pole structure/ platform mounted and transporting the same to authorised workshop and opening the transformer cover, draining out of tranformer oil and keep safely for reuse after filtration, assembling, removing of the burnt parts i.e tape, paper insulating strings etc gently and carefully, washing of the dust, rust and dirt from all parts incluiding taking out HT/LT leg coil core tank and cooling tubes, painting the inner side tank by zinc chromate paint and preparing the same for re-assembling after carrying out required repair and installation on existing 2/4 pole structure/ platform with neccessary fixing arrangment including connecting up electrically, commissioning and testing all as directed and specified. Note : (i) Unit rate quoted by the contractor shall be deemed to include for taking out and reinstalling after repair of transformer with the help of crane, including transportation to workshop and back incluiding handling. (ii) Unserviceable wornout items required replacement shall be measured and paid separately under respective items of BoQ.

All as per Item No. 1.0 here-in-before but of 315 KVA to 400 KVA capacity.

Supply only LT leg coil with insulation for copper wound transformer of any capacity for indoor /out door transformer complete all as specified and directed.

Supply only HT leg coil with insulation for copper wound transformer of any capacity for indoor /out door transformer complete all as specified and directed.

Supply & filling of transformer oil in transformer in situ/ at site for toping up the level of oil having dielectric strength 40-60 KV during filling after initial filtration conforming to IS-335 of make POWER/INSOLE/UNIVERSAL (Transformer oil shall be supplied in sealed container and empty barrel of transformer oil will be contractor property)

M&L for dehydration /filtration of transformer oil existing transformer installed at site with portable plant to improve the dielectric strength 40 to 60 KV during filling after initial filtration including testing of dielectric strength after dehydration at site complete all as specified and directed.

Supply only HT porecelain bushing complete with brass/tinned copper rod with nuts and gasket set complete for 50 KVA to 100 KVA capacity transformer complete all as specified and directed.

All as per Item No. 10.0 here-in-before but for 150 KVA to 250 KVA capacity transformer.

All as per Item No. 10.0 here-in-before but for 315 KVA to 400 KVA capacity transformer.

Supply only LT porecelain bushing complete with brass/tinned copper rod with nuts and gasket set complete for 50 KVA to 100 KVA capacity transformer complete all as specified and directed.

All as per Item No. 14.0 here-in-before but for 150 KVA to 250 KVA capacity transformer.

All as per Item No. 14.0 here-in-before but for 315 KVA to 400 KVA capacity transformer.

Supply only tap changer switch 11 KV complete with rod and gasket for 150 KVA to 250 KVA capacity transformer complete all as specified and directed.

All as per Item No. 14.0 here-in-before but for 315 KVA to 400 KVA capacity transformer.

M&L for opening of transformer cover at site for carrying out repairs such as replacment of bushing rods gasket etc and re-assembling after carrying out required repair in the transformers (Note :- Bushing rods shall be measured and paid separately in respective item of BoQ)

M&L for checking the condition of Silicate and packing the same to bring it to required blueish colour and refilling the new Silicate in to the breather complete all as specified and directed.

M&L for disconnection of defective transformer and shifting of trolly mounted transformer of 315 KVA capacity at required site and connecting to HT 11000 volt in coming from existing two pole structure and LT cable to LT panel and transporting the defective transformer to AGE E/M store yard complete all as specified and directed.

M&L for disconnecting LT conections of defective voltage stabiliser, taking out with the help of crane and transporting voltage stabiliser to factory for repair & back after repairing to site including connecting, LT connection earth connecting leads, testing and commissioning at site all as directed by Engineer-in-Charge for 10 KVA to 30 KVA capacity capacity transformer. Note : (i) Unit rate quoted by the contractor shall be deemed to include for taking out and reinstalling after repair of voltage stabiliser with the help of crane, including transportation to workshop and back incluiding handling. (ii) U/S wornout items required replacement shall be measured and paid separately under respective item of BoQ.

All as per Item No. 14.0 here-in-before but for 50 KVA to 100 KVA capacity transformer.

All as per Item No. 14.0 here-in-before but for 200 KVA to 315 KVA capacity transformer.

S&F in replacement of Micro switch of existing stabilizer of any make and capacity complete all as specified and directed.

S&F in replacement of carbon brushes of existing stabilizer of any make and capacity complete all as specified and directed.

S&F in replacement of control panel switch complete all as specified and directed.

S&F in replacement of indicator lamp suitable for stabilizer complete all as specified and directed.

S&F in replacement of Control card suitable for existing stabilizer of any capacity complete all as specified and directed.

S&F in replacement of CM torque motor for rotating of dimmer as per existing capacity and make for servo voltage stabiliser complete all as specified and directed.

S&F in replacement of Relay of voltage stabilizer as per existing capacity and make complete all as specified and directed.

S&F for servicing, calibration, testing and setting of fault tripping relays as mentioned in maintance and operation manual of 11 KV HT VCBs as per OEM instructions complete all as specified and directed.

M&L for servicing, calibration, testing and setting of fault tripping relays as mentioned in maintance and operation manual of 11 KV HT RMU SF6 breaker 1 incomer 2 outgoing as per OEM instructions complete all as specified and directed.

M&L for servicing, calibration, testing and setting of fault tripping relays as mentioned in maintance and operation manual of 11 KV HT RMU SF6 breaker 1 incomer 3 outgoing as per OEM instructions complete all as specified and directed.

M&L for servicing, calibration, testing and setting of fault tripping relays as mentioned in maintance and operation manual of 11 KV HT RMU SF6 breaker 1 incomer 4 outgoing as per OEM instructions complete all as specified and directed.

M&L for servicing, calibration, testing and setting of fault tripping relays as mentioned in maintance and operation manual of 11 KV HT RMU SF6 breaker 1 incomer 5 outgoing as per OEM instructions complete all as specified and directed.

S&F in replacement of cable end termination, jointing kit, HT 11 KV grade, heat shrinkable, indoor type complete with jointing material suitable for HT XLPE cable 3 core 11 KV grade of size 70 Sqmm to 120 Sqmm x 3 core complete all as specified and directed. Note- Unit rate quoted by the contractor shall be deemed to inclusive of excavation and earth work, T&P and labour etc.

S&F in replacement of cable end termination, jointing kit, HT 11 KV grade, heat shrinkable, outdoor type complete with jointing material suitable for HT XLPE cable 3 core 11 KV grade of size 70 Sqmm to 120 Sqmm 3 core complete all as specified and directed. Note- Unit rate quoted by the contractor shall be deemed to inclusive of excavation and earth work, T&P and labour etc.

S&F in replacement of cable, jointing kit, HT 11 KV grade, heat shrinkable, straight through type complete with jointing material suitable for HT XLPE cable 3 core 11 KV grade including taking out unserviceable joint kit of size 70 Sqmm to 120 Sqmm x 3 core complete all as specified and directed. Note- Unit rate quoted by the contractor shall be deemed to inclusive of excavation and earth work, T&P and labour etc.

Supply, laying, testing, jointing and commissioning in replacement of XLPE insulated cable screened PVC bedded, galvanised steel strip or wire armoured electric powercable heavy duty with aluminium conductor of size 95 sqmm 3 core 11000 Volt grade (11 KV earthed system) laid in trenches/ fixed on pole complete all as specified and directed. Note : Earth work, sand cushioning, cable protection cover, pipe and joint shall be measured and paid separately under respective items of BoQ

Supply and laying in replacement of GI pipe 100 mm dia light grade in treanches for road/ path and fixing alongwith pole/wall for protection of underground cable complete all as specified and directed.

S&F in replacement of HT cable route indicator cast iron of suitable size along with HT cable trench including planting in ground with PCC complete all as specified and directed.

Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits,manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in soft/loose soil.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm. Returning, filling including spreading, leveling watering & well ramming in layers not exc. 25 cm for soft/loose soil.

Removing excavated material n exc. 50m and depositing where directed at a level n exc. 1.5 m above the starting point for soil.

M&L for providing dry tibba sand in trenches as sand cushioning to underground cable including punning down of sand in layer all as speciied. (Note :- 18 cm Punned thickness shall only be measured and paid).

Laying in repairs of old stone patti complete all as specified and directed.

M&L for 40 to 50 mm thick rough dressed Jodhpur type stone slab cover 25 to 30 cm wide and 30 to 40 cm in length laid dry abutting each other or under ground protection complete all as specified and directed.

M&L for boring holes under road, pavement hardstanding by trenchless technology using ultra sound technique & necessary machine complete all as specified and directed.

M&L for locating fault in underground HT cable by using fault detector machine including transportation and by carying out high pressure test complete all as specified and directed.

M&L for earth continuity conductor or main earthing lead fixed to wall/on suitable insulators, on batten or recessed or chases or burried in ground or drawn in conduit /pipe or fixed to pole on any other indicated situation of size 32x6 mm galvanised strip complete all as specified and directed.

Supply and spread stone metal graded aggregate of size 40 mm at transformer yard of all Sub stations including surface dressing complete all as specified and directed. (Note: Contractor will level the uneven surface before spreading aggregate)

Surface Dressing / Cleaning of Surrounding Area of Two Pole / four Pole Structure including removing of tree brances, small trees plants bushes etc complete all as specified and directed.

S&F in replacement of Tripping coil 24/110 Volt DC supply complete as per existing make and type complete all as specified and directed.

M&L for preparation of old existing concrete surfaces and painting of existing PCC pole upto 150 cm height from ground level with two coats of synthetic enamel paint in yellow and black colour code in 30 cm width for LT and HT pole including writing pole number complete all as specified and directed.

M&L for disconnection of HT and earthing connections from existing VCB carefully and taking out the VCB and shifting by using crane and making HT/Earthing connections complete all as specified and directed.

S&F in replacement of Amp meter 3 phase, suitable for VCB complete all as specified and directed.

S&F in replacement of battery backed power pack input 230 volts AC supply and output 110 volt DC supply suitable for HT VCB complete all as specified and directed.

S&F in replacement of Neon indicating lamp suitable for VCB/RMU (Red, Yellow, Blue) panel mounting type complete all as specified and directed.

S&F in replacement of indicator detector suitable for HT 11 KV of make Areva for RMU complete all as specified and directed.

S&F rubber boot for indoor terminal protection of 11 KV cable complete all as specified and directed.

S&F in replacement of MiCOM range of relays offers varying levels of functionality and hardware options to best suit the potection requirements,Voltage 100-230 V AC,48-250 V DC Current 3 or 5 Amp Number Of Poles 3 Frequency 50 Hz Operating Temperature -10 to +80 Deg C Suitable for 11 KV VCB installed at site complete all as specified and directed.

S&F in replacement of Numerical Over Current And Earth Fault Protection Relay,Current 1A/5A Display Flush Frequency 50 Hz IP Rating IP 55 Suitable for 11 KV VCB installed at site complete all as specified and directed.

S&F in replacement of Master trip relays having multiple NO & NC contact for extending tripping command to circuit breaker trip coils, Size 1/4 DIN Type DC Phase Single Material Copper Supply 24VDC Suitable for 11 KV VCB installed at sitecomplete all as specified and directed.

S&F in replacement of 11KV VCB Spring charging Mechanism No. of Poles 3 Rated Current 1600 A Voltage 230 V Frequency 50 Hz complete all as specified and directed.

S&F in replacement of Vacuum Interrupter 12kV Rated Voltage [kV] : 12 Rated Normal Current [A]:1250 Rated Short Circuit Breaking Current[kA] :26.3 Rated Frequency [Hz]:50-60 Rated Insulation Level -Power Fequency Voltage [kV] :28 Rated insulation Level -Impulse Lightning Voltage [kVp] :75 Mechanical Operating Cycles: 30000 CO Make:Crompton Greaves Ltd. or equivalent as per site requirement complete all as specified and directed.

S&F in replacement of One Phase Outdoor Oil Current Transformer Cooling Type Oil cooled Phase One Phase Power Rating -11KV Make: EREVA /ABB /Crompton Greaves/ Siemens/ Sehneider or equivalent as per site requirement complete all as specified and directed by Engineer in charge

S&F in replacement of Rated Secondary Voltage 70 kvp Ring Core Type CT 33KV Dead Tank Current Transformer, Ring Core Type CT, CT Ratio 200-100/5-5A ,Rated Voltage 33KV Material Mild Steel,Rated Power Rated secondary voltage 70KVP complete all as specified and directed.

S&F in replacement of Single 33 KV Outdoor Potential Transformer Phase Single Accuracy Class 0.2,0.5 Primary Voltage 33 KV Secondary Voltage 63.5 Volt Frequency 50 Hz Color Grey complete all as specified and directed.

S&F in replacement of Primary Voltage 11KV Power (VA) 100, Core Type POTENTIAL TRANSFORMER, Phase One Phase, Secondary Voltage 110V/220V, Accuracy Class 10, 3P, 0.5, 0.2, Rated Voltage 12KV, Material 11KV INDOOR TYPE PT, cooling Type Dry Type, CT Ratio 11KV/RT3/110V/RT3, Color 12KV HSV,Coil Structure Toroidal complete all as specified and directed.

S&F in replacement of CT Ratio- Different ratio Rated Voltage 11kV, Rated Power (VA) 15VA 20VA 30VA 40VA 50VA, Phase Single Phase, Power (VA) 15VA 30VA, Input Voltage 11KV 22kV 33kV, Output Voltage 1A 5A, Accuracy Class 0.2, 20, 10, 0.5, Core Type Indoor type ct, Wound CT, Rated Burden 15VA 30KV 40KV 50KV 100KV,Material INDOOR complete all as specified and directed.

S&F in replacement of VRLA battery 2 volt, Capacity 220 Ah,Type Flat Plate Battery Warranty 2 years, Usage/Application online UPS Make: Exide/Amaron/Microtech or equivalent as per site requirement complete all as specified and directed by Engineer in charge

S&F in replacement of Tubular Gel VRLA 12 Volt Monoblock Battery, Capacity: 120 Ah, Warranty: 1 year Usage/Application online UPS Make: Exide/Amaron/Microtech or equivalent as per site requirement complete all as specified and directed by Engineer in charge

S&F in replacement of 1100 VA inverter pure sine wave with 150 Ah Tubular Battery and Trolley Application online UPS Make: Exide/Amaron/Microtech or equivalent as per site requirement complete all as specified and directed by Engineer in charge

S&F in replacement of 33 KV Anti Skid Electrical Insulation Mat IS15652/2006 Pattern ANTI SKID Material ELASTOMER Rated Voltage 33KV Color BLACK/ BLUE/ RED, Flame Retardance, Make:ISI approved ,size as per site requirement complete all as specified and directed.

S&F in replacement of limb 11 KV outdoor type Current tranformer complete all as specified and directed.

S&F in replacement of copper bus bar for HT 11 KV VCB as per required thickness, width and length , size and mould dimension will be as per site requirement complete all as specified and directed.

S&F in replacement of Earth fault & Over current self power Relay suitable for 1 Amp, complete all as specified and directed.

S&F in replacement of Brown Pin Insulator Color Brown Frequency 50 Hz Surface Finish Polished Working Voltage 11 kV Creepage Distance Minimum 230 mm complete all as specified and directed.

S&F in replacement of Brown Porcelain 11 KV Disc Insulator Material Porcelain,Color Brown Surface Treatment Polished ,size as per site requirement complete all as specified and directed.