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

Amount

Disconnecting, opening of VCB (Make: - Crompton/Megawin/Yamuna Denson/ABB Ltd) 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 as 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 this item. (ii) Servicing shall be got carried out by the authorized 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 and same shall deemed to be included in rate quoted.

Supply only following items/spare parts suitable for 11KV VCB, 400/800 Amps capacity of (Make: - Crompton/Megawin/Yamuna Denson/ABB Ltd) dismantled / fixed under Sch 'A' item No. 1.00 here-in-before complete all as specified and directed.

Vacuum 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 and Gear assembly 110 Volt AC and 220 Volt AC for 11 KV VCB Panel complete all as specified and directed.

TNC (Trip Neutral Close) 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 complete all as specified and directed.

Material and labour for testing and calibration of 11KV VCBs (Make: - Crompton/Megawin/Dension / ABB Ltd) 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 (Insulation Resistance 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, installation, testing and commissioning of Micro processor based relay (02 OC + 01 EF) for 11 KV VCB panel, rating 5 Amps, Auxiliary supply 20-110 Volt DC complete all as specified and directed. Make: - CG /ABB/ SIEMENS. Note: - (a) 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. (b) The digital relay shall have following protections (i) Phase over current protection (ii) Earth fault protection (iii) Over voltage (iv) Breaker failure indication (v) 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 CL-1.0 and burden of 15VA, breaking capacity of 13.1 KV for 1.0 second all as specified and as directed. Make: CG/Kappa/Jyoti/Alstom

Disconnecting and taking down unserviceable voltage transformer of any description and in any position and supply, installation, commissioning and testing for 11KV single phase indoor oil cooled Potential Transformer 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, commissioning and testing of Power pack unit input voltage 180-250 Voltage and out put voltage 24 Volt DC having 4-digit digital Volt and Ampere meter, High resolution DC/AC, AC/DC converter, Digital interface as standard function etc. including taking out US battery bank unit complete all as specified and as directed.

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

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 and 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 authorized rep of the HT Capacitor 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: 9.00 here-in-before complete all as specified and directed.

Vacuum Contactor three phase suitable for 11 KV, 10KA, 400 KVAR complete all as specified and directed.

Vacuum Contactor three phase suitable for 11 KV, 10KA, 800 KVAR 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.

Residual voltage transformer suitable for 11 KV/110V-110V oil cooled 800 KVAR complete all as specified and directed.

Residual voltage transformer suitable for 11 KV/110V-110V oil cooled 400 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 upto 630 KVA by removing overhead conductor / underground cables and earth strips etc. Installation of transformer after repairs, making all connections, testing and re-commissioning to full satisfaction of Engr-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 up 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 enameled copper/ aluminium wire as per existing gauge, 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 and paid separately. (ii) Contractor is required to submit test report for repaired transformer duly signed by Engr-in-Charge before installation.

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

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

All as per serial item No. 14.00 but capacity above 100 KVA and upto 250 KVA complete all as specified and directed.

All as per serial item No. 14.00 but capacity above 250 KVA and upto 630 KVA complete all as specified and directed.

Supply only super enameled 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 directed.

Supply only super enameled 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 directed.

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

Supply and filling transformer power oil meeting IEC 60296-2003-11, 3rd edition standard specification and ASTMD 1275B test requirements for corrosive sulphur of BDV not less than 65 KV for filling in repaired transformer HT 11 KV complete all as specified and as directed.

Material and labour for filtration 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 dehydration 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.

Material and labour for cleaning and preparation of steel surfaces of existing dull painting of transformer outdoor type including radiators, cooling ducts, vent pipes, condenser 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 Srl item No. 22.00 above but capacity above 160 KVA and upto 630 KVA complete all as specified and directed.

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 platform / 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, commissioning of transformer after checking voltage and loading at full load shall deemed to be included in quoted rates.

M/s Rohit Construction Co.

SRI SAI CONSTRUCTION COMPANY

M/s Tiwari & Sons

m/s krishna builders

GURDEEP SINGH AND COMPANY