REPAIR/ MAINT OF 11/0.433 KV TRANSFORMER AND 11 KV VCB AT AF STN SURATGARH

Amount

Disconnecting, opening of VCB (Make: - Crompton/Megawin/Denson/ABB Ltd/ITE) of any description and any make of rating 11 KV 400/800 Amps capacity for servicing / overhauling, taking out and removing unserviceable / defective parts including cleaning & servicing, greasing, oiling of the parts etc and replacement of unserviceable parts with new one, reassembling the VCB after overhauling/ servicing and its testing complete all a specified and as directed. Note: - (i) Replacement of unserviceable parts shall be measured and paid for separately under appropriate item of Sch 'A' as supply only but fixing charges of the parts replaced /repaired is deemed to be included in this item. (ii) Servicing shall be got carried out by the authorised rep of the VCB manufacturer and the service engineer will submit a service report for each VCB. (iii) Any item not included in CA and required for successful operation of the panel will be provided by the contractor & same shall deemed to be included rate quoted.

Supply only following items/spare parts suitable for 11KV VCB, 400/800 Amps capacity of (Make: - Crompton/Megawin/ Denson/ABB Ltd/ITE) dismantled / fixed under Sch 'A' item No: 01 here-in-before complete all as specified and directed.

Vaccum Interrupter type WL-33379 suitable for 11 KV VCB Panel complete all as specified and directed.

Isolating contact assembly 400/800 Amps suitable for 11 KV VCB Panel complete all as specified and directed.

Tripping Coil assembly 30 Volts DC suitable for 11 KV VCB Panel complete all as specified and directed.

Close Coil assembly 30 Volts DC suitable for 11 KV VCB Panel complete all as specified and directed.

Motor & Gear assembly 110V AC and 220 AC for 11 KV VCB Panel complete all as specified and directed.

TNC switch for 11 KV VCB Panel complete all as specified and directed.

Indication lamp LED type suitable for 230 Volts AC 50Hz and 110/30 Volts DC supply.

Material and labour for testing and calibration of 11KV VCBs (Make : Crompton/Megawin/ Denson/ ABB Ltd/ ITE) indoor type along with control panel and control wiring, protection system and relays system (relay to tripping coil auxiliary switch male and female housing cut outs etc) , checking of quality of vacuum interrupter, insulation resistances, static contact resistance, Testing (IR value, Ratio test, Polarity test) and connection verification of 11 KV Current transformer( Set of three) by PRIMARY INJECTION KIT ,and Testing and calibration of relay( set of two Over current and one earth fault) by SECONDARY INJECTION KIT including all other functional tests of the VCB, C&R panel and CTs, PTs. complete all as specified and directed.

Supply install ,testing and commissioning of Micro processor base relay (02 O/C + 01 EF) for 11 KV VCB panel , rating 5 Amps, Auxiliary supply 24-110 Volt DC complete all as specified and directed. Make: - CGI14N/ABB/SIEMENS Note: - (i) Necessary addition/ alteration to existing VCB front panel such as cutting/welding of front size of panel board/position if required including necessary modification of wiring shall be carried out at site by the contractor without any extra cost. (ii) The digital relay shall have following protections (a) Phase over current protection (b) earth fault protection (d) Over voltage (e) Breaker failure indication (f) Auxiliary power supply 24-110 V DC

Disconnecting and taking down unserviceable current transformer of any description and in any position and supply, installation, commissioning and testing of cast resin type 11KV current transformer having ratio 100+50/5+5A as per IS: 2705 having protection core class 5P10, burden of 15VA and metering core class CL1.0 and burden of 15VA, breaking capacity of 13.1 KV for 1.0 second all as specified and directed. Make: - CG/Kappa/Jyoti/Alstom

Disconnecting and taking down unserviceable potential transformer of any description and in any position and supply, installation, commissioning and testing for 11KV single phase indoor oil cooled PT of ratio 11KV/RT 3/10V/RT 3/110/RT 3 class 0.5-3, burden 100VA, insulation level 35/75 KV, voltage factor 1.2 cont and 1.9 for 30 sec, conforming to IS-3156 complete all as specified and directed. Make: - CG/Kappa/Jyoti/Alstom

Supply install, testing and commissioning of Power pack unit input voltage 180-250 Voltage and output voltage 110 Volt DC having 4-digit digital Volt & Ampere meter, High resolution D/A, A/D converter, Digital interface as standard function etc. complete all as specified and as directed including taking out US battery bank unit.

Supply install, testing and commissioning of Power pack unit input voltage 110 Voltage and output voltage 24 Volt DC having 4-digit digital Volt & Ampere meter, High resolution D/A, A/D converter, Digital interface as standard function etc. complete all as specified and as directed including taking out US battery bank unit.

Disconnecting, opening of HT Capacitor bank of any description and any make of rating 11 KV indoor capacitor switching panel and outdoor capacitor bank type with automatic/manual control having output 2400 KVAR (Step rating proposed : 400 KVAR x 2+800 KVAR x 2 desired 0.99) for servicing / overhauling, taking out and removing unserviceable / defective parts including cleaning & servicing, greasing, oiling of the parts etc and replacement of unserviceable parts with new one, reassembling the HT Capacitor Bank after overhauling/ servicing and its testing complete all a specified and directed. Note: (i) Replacement of unserviceable parts shall be measured and paid for separately under appropriate item of Sch 'A' as supply only but fixing charges of the parts replaced /repaired is deemed to be included in these item. (ii) Servicing shall be got carried out by the authorised rep of the HT Capcitor Bank manufacturer and the service engineer will submit a service report for Capacitor Bank. (iii) Any item not included in CA and required for successful operation of the panel will be provided by the contractor & same shall deemed to be included rate quoted.

Supply only following items/spare parts suitable for 11KV HT Capacitor Bank/Panel , 2400 KVAR capacity of any make and any description, dismantled / fixed under Sch 'A' item No: 09 here-in-before complete all as specified and directed.

HT HRC Fuses suitable for 11 KV, 400 KVAR complete all as specified and directed.

HT HRC Fuses suitable for 11 KV, 800 KVAR complete all as specified and directed.

NDVR Relay suitable for 400 KVAR step complete all as specified and directed.

Material and labour for disconnecting 11/0.433 KV distribution transformer of capacity 100KVA to 630 KVA by removing overhead conductor / underground cables and earth strips etc. Installation of transformer after repairs, making all connections, testing and recommissioning to full satisfaction of Engineer-in-charge. Taking out the transformer from any substation using suitable capacity crane or by any other method irrespective of type of approach available, loading in vehicle, transportation to workshop for repairs and unloading carefully. Reloading the transformer after repairs, transportation to site and unloading including placing at given position complete all as specified and directed. Note: - All the T&P required for disconnection, connection, and loading including necessary petty items like bolts, nuts etc will be arranged by the contractor and rates for the same deemed to be included in the rates quoted.

Repair to distribution transformer step down 11/0.433 KV indoor/outdoor type of capacity 100 KVA to 250 KVA, after dismantling the transformer carefully, opening the top cover of transformer for inspection /repair, draining out the transformer oil from the housing complete, taking out the core and winding by disconnecting the internal connections, removing the carbon/sludge deposit in transformer housing core, replacement of unserviceable rubber bushes and washers, replacement of tap changer winding and thimbles, replacement of silica gel, replacement of top cover gasket set including pasting with pasting material, replacement of worn out nut and bolts, replacement of unserviceable LT & HT bushes, cutting the burnt out winding and re-winding the same with suitable size of super enamelled copper/ aluminium wire as per existing guage, insulating the winding connection by using fire proof sleeve and fire proof tape, varnishing the coil, keeping the coils in electric oven chamber for 24 hrs to remove the moisture, painting of complete transformer body from outside and inside, marking of MES/SM Number etc, replacement of conservator tank glass, re-installing the core and winding inside properly, making the all connection with suitable copper lugs, filling of new transformer oil, reinstalling the top cover after cleaning and painting of housing, conservator tank, expulsion vent etc, Meggering the LT and HT side of the Transformer and testing complete all as specified and directed by Engineer-in-Charge. Note :- (i) Winding wire for making of coils, HT/LT bushes, new transformer oil will be measured & paid seperately (ii) Contractor is required to submit test report for repaired transformer duly signed by Engineer-in-Charge before installation.

All as per Srl item No 12.00 above but of capacity 11 / 0.433 KV, above 250 KVA upto 630 KVA complete all as directed.

Supply only brass terminal rod with nuts, bolts washers & bushings suitable for HT and LT side of the transformer of any make and capacity upto 100KVA complete.

All as per item No: 14.00 but capacity above 100 KVA and upto 250 KVA.

All as per item No: 14.00 but capacity above 250 KVA and upto 630 KVA.

Supply only super enamelled copper conductor wire of suitable gauge and size as per requirement for rewinding of 11/0.433 KV distribution transformer complete all as specified and as directed.

Supply only super enamelled aluminium conductor wire of suitable gauge and size as per requirement for rewinding of 11/0.433 KV distribution transformer complete all as specified and as directed.

Supply only tap changing switch suitable for operation on 11/0.433 KV distribution transformer with tappings on 2.5%, 5% and 7.5% on required basis for upto 630KVA capacity transformer complete all as specified and as driected.

Supply and replacing silica gel breather clear view type including first fill of good quality silica gel of capacity suitable for 100 KVA to 250 KVA transformer.

Supply and replacing silica gel breather clear view type including first fill of good quality silica gel of capacity suitable for 250 KVA to 630 KVA transformer.

Supply and replacing of silica gel crystel filled in the breather of capacity suitable for 100 KVA to 630 KVA transformer complete all as directed.

Supply and filling transformer power oil meeting IEC 60296-2003-11, 3rd edition standard specification and ASTMD 1275B test requirements for corrosive sulpher of BDV not be less than 40 KV at 2.5mm gap for reduced level of transformer due to evaporation/ leakage/losses due to dehydration in HT 33 KV transformer/HT 11 KV AVR to filling in distribution transformer HT 33/ 11 KV and 11 KV AVR all as specified and directed.

M & L for filteration and dehydration of transformer oil by dehydration machine to achieve the die-electric strength/ insulation value upto 65 KV/40KV (RMS) at standard gap of electrodes 2.5 mm for one minute in various capacity of transformers 33/11KV and 11/0.433KV including insulation testing of oil with help of suitable equipments before and after dehydration including BDV Test compete all as specified and directed. Note: (i) Contractor will have to arrange the dehydration machine and transformer oil dielectric strength testing equipment as mentioned and same shall be deemed to be included in the item rate quoted. (ii) Test result of transformer oil before and after dehydartion is required to submit by contractor duly signed by all concerned. (iii) The contractor shall ensure that the conservator tanks are full to its level before commencement of dehydration process. (iv) Additional quantity of transformer oil if any required for making the oil level upto the requirement in transformer shall be measured and paid separately as supply and filling but its cost of heating shall be deemed to be included in the rate quoted for above item.

M & L for cleaning and preparation of steel surfaces of existing dull painting of transformer outdoor type including radiators, cooling ducts, vent pipes, condensor etc and applying two coats of synthetic enameled paint (heat resistant type) according to to IS colour code by spray machine including writing MES /SM No. in capital letters of suitable size on body for capacity upto 160KVA transformer outdoor/indoor complete all as specified and directed

All as per item No: 25.00 but capacity above 160 KVA and upto 630 KVA.

Dismantling and taking down by removing HT and LT connection of indoor/outdoor type 11/0.433KV transformer capacity 200 KVA to 630KVA from existing plateform / 4 Pole / 2 Pole structure, lowering the same carefully and shifting to other location within Air Force Station as directed by Engineer-in-Charge with and including reinstallation by any means of arrangement and testing complete all as specified and directed. Note: Installation of transformer, testing and connecting the both HT/LT cables, commisioning of transformer after checking voltage and loading at full load shall deemed to be included in quoted rates.

Removing of old unserviceable UPS battery and supply & fixing of new battery capacity of 12V, 42AH complete all as specified and directed to Engr-in-charge. Make: - Amaron QUANTA Model No 12ALO425MF-VRLA/Exide

Material and labour for removing vegitation, grass, scrubs and bushes growing in MRS/Sub station yard along with fancing by mannually / mechanically and keep the sub station yard neat and clean complete all as specified and as directed. Note :- Unit rate quoted deemed to include to keep the installation neat and clean through out the period of contract. and each cleaning will be measured separately.

Disconnecting and taking down HT/LT cable from duct of 33 KV MRS/ 11 KV sub stations and cleaning of duct and relaying of cable after filling of sand into the duct complete all as specified and directed by Engr-in Charge. Note: - Sand is measured and paid separately as per the size of duct.

Taking down of existing any type or any size of insulator from PCC/Steel poles complete all as specified and directed by Engineer-in-Charge.

Supply and fixing porcelain disc insulators with 4 disc in series suitable for 33 KV system made out of 11 KV disc insulators with all galvanised fittings all as specefied and directed.

Supply and fixing pin type porcelain brown vitreous insulator of 33 KV pressure and including galvanised mild steel spindle, two GI washer and one No GI Nut complete all as specefied and directed.

Taking down existing unserviceable HT cable 240/300Sqmm complete for replacement all as specified and directed.

Supply, Laying, testing and commissioning XLPE cable, PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor 11000 Volts grade (earthed), 3 core 300 sqmm laid in trenches / floor / duct / fixed on poles / through GI tubing in different locations / areas complete all as specified and as directed.

Excavation in trenches in soft/loose soil not exceeding 1.5 meter wide and not exceeding 1.5M in depth for laying of cables and getting out of excavated material complete all as specified and directed by Engineer-in-Charge

Returning, filling in, including spreading, leveling, watering and well ramming in layer not exceeding 25cm thick each complete all as specified and directed by Engineer-in-Charge

Removing excavated soil to a distance not exceeding 50 meter and depositing where directed at a level not exceeding 1.50 meter above the starting point complete all as specified and directed by Engineer-in-Charge

Material and labour for river bed fine sand in trenches/ ducts 15 cm under cable and 8 cm above the cable for cushioning/protection to cable including spreding, levelling and get thick 18cm after hand punning complete all as specified and directed at site.

Supply and laying Precast in reinforced Concrete cable covers Class HV, type B-2 flat of size 450mm x 180mm x 40 mm for HT cable all as specefied.

Material and labour for replacement of danger notice plate of 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 MS clamps nade of 25x3m MS flat, bolts and nuts for HT 25x20cm size complete all as directed.

Material and Laying for Low aggregate gravel is spread thicknes in 50mm on laying of surface at MRS/Sub Stn complete all as specified and directed at site.

Supply, fixing, testing and commissioning in replacement of air break isolating switch triple pole mechanically operated with vertical isolation, 12 insulators mounted on steel frame with operating mechanism worked from ground level and including operating rod of 25 mm dia medium grade GI pipe and locking arrangement of capacity 400 Amps 11 KV with drop out fuse set including making all incoming/outgoing connection of HT cable and overhead conductor using new leads and nuts, bolts etc and painting of steel work with 2 coats of aluminium paint over a coat of red oxide primer complete all as specified and directed.

SRI SAI CONSTRUCTION COMPANY

B.K. ROY & SONS

SHARMA CONSTRUCATION COMPANY

singh enterprises

HUMERS INFRATECH

m/s krishna builders