Essential work of 11 KV HT VCB of Transformer at various Sub-station at T.E Buildings under SM( E )Z4 MTNL Mumbai.

Amount

Supply and fixing of 11 KV HT xlpe Aluminium armored cable joint with testing, complete as required. Make Denson

Indoor type Joint Size of 240,300 Sq.mm

Outdoor type Joint Size of 240,300 Sq.mm

Striate through type Joint Size of 240,300 sq mm

Supply and fixing of electronic IDMT Relay with testing, complete as required. Make- L&T/ Crompton.

Supply and fixing of Vacuum interrupter bottle 11 KV 630 Amp. Make Alsthom/ Kirloskar/Crompton with assembling, connection, testing, complete as required.

Supplying, Laying and fixing of HT -11 KV, 3 core following size Aluminium Armored power cable i/c connection, Testing etc. complete as required. A)240/300 sqmm

Supply and fixing of T & C switch in 11 KV HT Panel with wiring, connection, testing etc. complete as required.

Supply and fixing of 11 KV, HRC fuses with testing etc. complete as required.

Supply and fixing of LT/HT spares bottom cluster contact and testing etc. complete as required.

Supply and fixing of LT/HT M-610 / M-16 top fix contact and testing etc. complete as required.

Supply and fixing of 1000 Watt Halogen Light for arresting of moister in HT Panel with 3 core 4 sq mm cable 10 mtr aprox, wiring connection testing complete as required.

Servicing of 630/800 Amp 11 KV HT OCB / VCB complete with cleaning, alignment, adjustment of gaps between phase to phase, lubricating all moving parts, adjustment for smooth mechanical operation etc complete as required.

De- hydration of transformer oil for 500 to 1000 KVA with Filter machine at site to maintain the break down value, die electric strength of oil up to 50 KV including providing oil testing facility at site as reqd.

Supply & fixing of power pack unit having input 220 Volt AC and out put 24/48/110 Volt DC i/c. making inter connection suitable for existing HT system etc. complete as required.

Checking & arresting of Oil Leakages from 500 to 1000 KVA transformer at Site. The job scope as mentioned includes : a) Dismantling of LT cable’s / Bus- Bar’s connections & dismantling of L.T. Bushing Rods. b) Dismantling of Main Top cover / inspection window of Transformer. After draining of oil of Transformer into drums. ( as per requirement) c) Replacement of Cork rings set along with new Teflon rings of all phases for arresting oil leakages. d) Fixing of all terminals & Bus-bar’s connections & making adjustments. e) Replacement of cork gaskets, oil rings of inspection window side & Buckolz relay side & pipe line also for arresting leakages, if any. f) Re-filling of oil into transformer & examining of leakages for improving breakdown value of oil complete as reqd.

Checking & arresting of Oil Leakages from 1250 to 1500 KVA transformer at Site. The job scope as mentioned includes : a) Dismantling of LT cable’s / Bus- Bar’s connections & dismantling of L.T. Bushing Rods. b) Dismantling of Main Top cover / inspection window of Transformer. After draining of oil of Transformer into drums. ( as per requirement) c) Replacement of Cork rings set along with new Teflon rings of all phases for arresting oil leakages. d) Fixing of all terminals & Bus-bar’s connections & making adjustments. e) Replacement of cork gaskets, oil rings of inspection window side & Buckolz relay side & pipe line also for arresting leakages, if any. f) Re-filling of oil into transformer & examining of leakages for improving breakdown value of oil complete as reqd.

Servicing of 800 to 3200 Amp ACB Complete with cleaning, alignment, adjustment of gaps between phase to phase, lubricating all moving parts adjustment for smooth mechanical operation etc complete as required.

Servicing and cleaning of 160 to 1000 KVA 11 KV / 415 Volt Dry type transformer i/c flexible joint connection and checking temperature relay for its operation, tightening of HT/LT connection and adjustment of tripping, meggering, high port testing, checking protection etc. complete as required.

Supply and fixing of heavy duty initially charged capacity 150 AH, 21 plate Battery with wiring, connection, testing etc. complete as required.

Supply and fixing of APFC Micro processer relay with calibration, testing etc. complete as required. (8 Stage / 12 Stage)

Supply and fixing of following size MCCB, 36 KA rating, with spreader link, nuts, bolt and washer i/c dismantling of burnout MCCB and re-connection of New MCCB, complete with testing etc. complete as required.

100 Amp MCCB 3 Pole

200 to 250 Amp MCCB 3 Pole

400 Amp MCCB 3 Pole

Supplying and fixing of Digital type, Voltmeter up to 500 Volt, suitable size Make:- Trinity / L&T/ Slic, complete with wiring, connection, testing etc. complete as required

Testing and maggering, p.c testing, insulation testing and rectification of moister in bus bar, insulator, One in-coming & Two out-going and H.T Cable box, Heating of complete P.T, C.T testing etc. complete as required.

Supply and fixing of Digital type, Ammeter up to 2500 Amp. suitable size Make :- Trinity / L&T/Slic etc. complete with wiring, connection, testing etc. complete as required.

Supply and fixing of indication lamp with holder assembly 230 V AC / 24 DC / 48 V DC / 110 V DC, complete as required.

Supplying & filling the transformer oil, sealed pack drum including transportation charges etc. ( Make : M/S Power oil /Savita with ISI marked having 50 KV R/C)

SITC of super heavy duty capacitor in the existing capacitor panel suitable for working of 440V AC supply, including removing of faulty capacitor etc complete as required. (Make: Epcos) 5 KVAR

SITC of super heavy duty capacitor in the existing capacitor panel suitable for working of 440V AC supply, including removing of faulty capacitor etc complete as required. (Make: Epcos) 10 KVAR

SITC of super heavy duty capacitor in the existing capacitor panel suitable for working of 440V AC supply, including removing of faulty capacitor etc complete as required. (Make: Epcos) 15 KVAR

SITC of super heavy duty capacitor in the existing capacitor panel suitable for working of 440V AC supply, including removing of faulty capacitor etc complete as required. (Make: Epcos) 20 KVAR

SITC of super heavy duty capacitor in the existing capacitor panel suitable for working of 440V AC supply, including removing of faulty capacitor etc complete as required. (Make: Epcos) 25 KVAR

SITC of super heavy duty capacitor in the existing capacitor panel suitable for working of 440V AC supply, including removing of faulty capacitor etc complete as required. (Make: Epcos) 50 KVAR

Supply and fixing of Rack in & Rack out assembly for 1000 amp to 1600 amp ACB.

Supply and fixing of following size Power Contactor with wiring connection testing complete as required. (Make L&T /Havells)

Moc - 12.5 ( for 5/6/10 KVAR capacitor )

Moc - 15 ( for 2.5/15 KVAR Capacitor)

Moc - 20 ( for 20 KVAR Capacitor)

Moc - 30 ( for 20/25 KVAR Capacitor)

Moc - 50 ( for 50 KVAR Capacitor)

Dismantling the 200 KVA transformer from the foundation i/e dismantling of all incoming & outgoing connection ,bus trunking at LT side and HT site etc complete as reqd and keep it to out side the room. etc. complete as reqd.

Loading the transformer in tempo with the help to chain pulley /Crain & heavy labour at Tel. Exchange & unloading at workshop from tempo i/c cartage from Tel. Exchange to workshop etc complete as reqd.

Loading the transformer in tempo with the help of chain pulley/Crain & heavy labour at workshop & unloading at Tel. Exchange Frame tempo i/c cartage from workshop to Tel. Exchange etc complete as reqd.

Opening of top and disconnecting all the connection from L. T. and H.T. side and opening of the tap charger , lifting the complete core brunt HT 11 KV copper coils of 3 phase, opening the LT strip winding of 3 phase for cleaning the old insulation etc complete as reqd.

Complete rewinding of 200 KVA primary DELTA and star secondary 11 KV / 415 volts oil filled transformer HT and LT side all 3 HT cores and 3 LT cores with suitable size copper strip / wire with H class insulation ,including dismantling the burnt winding of HT and LT sides cleaning the core, varnishing the new winding, heating, drying, testing commissioning complete in all respect etc complete as required with following test a) Megger Test, b) Ratio Test, c) Resistance Test d) Vector group test e) Magnetic balance Test f) Short Circuit Test g) No load Test.

Repairing of Self starter Motor assembly for upto 200 KVA DEA Set complete with replacement of faulty internal parts.

Supply and fixing of AVR assembly for 500 KVA to 750 KVA with wiring connection testing complete as required.

Supply and fixing of Electronic Governor for 500 KVA to 750 KVA with wiring connection testing etc complete as required.

Supply & fixing of following accessories in the Transformer as reqd.

Copper rod & bushing

Internal side copper flexible joint with nut bolt

Testing and calibration of IDMT relay set having 2 Nos. O/C. 1 No. E/F & instantaneous element by secondary injection method, cleaning the contacts, resetting with required accuracy complete with checking and set right the wiring etc. complete as reqd. i/c testing of the complete system of HT panel for checking the actual working of CTs their wiring, connected IDMT relay, shunt trip system, breaker's tripping system and for any loose connection by primary injection method in all three phases and at each plug setting at actual time multiplier at site with suitable equipment i/c rectify the different in control wiring etc if any complete as required.

Dismantling of LT distribution panel and shifting of complete LT panel and installation, testing in the resin of Mumbai with help of heavy labour, chain pulley, truck etc. complete as required.

Supply and fixing of complete 11 KV VCB epoxy body with dismantling of mechanism parts, brunt out vacuum interrupter bottle and refixing new interrupter bottle, alignment, greasing and high voltage testing etc. complete as required.

Less credit on account of dismantled material.