Repairing and Servicing of 11 KV HT breakers and Transformer at various Sub Station in various RSU, RLU and TE Building of Zone 4 MTNL Mumbai.

Amount

Supply and fixing of Transformer temperature relay with dismantling of brunt out temperature relay and wiring connection testing etc complete as required

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

Supply and fixing of current transformer in existing LT panel (Set of 03 nos for three phase), having suitable CT ratio up-to 2000/5 Amp for protection and metering, including testing, wiring, and installation in the existing LT Panel including connections, testing and commissioning etc. complete as required as per site requirement.

Servicing of 400Amp to 800Amp 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 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

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

Testing and meggaring of 11 KV HT VCB, CT with p.c testing, insulation testing and rectification of moisture in bus bar, insulator, and H.T Cable box, Heating of complete C.T testing etc. complete as required.

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.

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.

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.

a)100 Amp MCCB 3 Pole

b)200 to 250 Amp MCCB 3 Pole

c)400 Amp MCCB 3 Pole

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

Testing of 500-1500 KVA Transformer including meggaring, high voltage test, IR value, balancing test, insulation testing and rectification of moisture in bus bar, insulator, in-coming, 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. Size 96 x 96 sq.mm, (Make: Trinity / L&T) etc. complete with wiring, connection, testing etc. complete as required.

Supplying and fixing of Digital type, Voltmeter up to 500 Volt, size 96 x 96 sq.mm, (Make: Trinity / L&T) complete with wiring, connection, testing etc. complete as required

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

Supplying and fixing of Digital type, KV Meter size 96 x 96 sq. mm, (Make: Trinity / L&T) complete with wiring, connection, testing etc. complete as required.

Blowing off dust/dirt complete HT Panel 1 no, LT Panel 1No, Capacitor panel-2 Nos., Emergency Panel 1 No. and cleaning in site and out site tightening of all loose nut, bolt etc. as required.

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

Providing and making of wiring for existing faulty capacitor panel with required size copper wire and copper lugs testing etc complete as required.

Supply and fixing of current transformer in existing 11KV HT panel having suitable CT ratio for protection and metering including testing wiring and installation in the existing H.T. panel including connections, testing and commissioning etc. complete as required as per site requirement.

SITC of Super heavy duty capacitor in the existing capacitor panel suitable for working of 440 Volts AC Supply i/c removing of faulty capacitor etc complete as required. (Make : EPCOS)

a) 1 KVAR

b) 2 KVAR

c) 3 KVAR

d) 5 KVAR

e) 10 KVAR

f) 15 KVAR

g) 20 KVAR

Supply and fixing of following HRC Fuse assembly with wiring connection testing complete as required.

a) 63 Amps

b) 100 Amps

c) 125 Amps

Supply and fixing of 4 Pole power contactor with 1 NO, 1NC for capacitor panel with wiring connection testing complete as required.

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

b) Moc - 15 ( for 12.5/15 KVAR Capacitor)

c) Moc - 20 ( for 20 KVAR Capacitor)

Providing and fixing 50 mm X 5 mm Copper strip on surface or in recess for connections etc. as required.

Providing and fixing 50 mm X 5 mm GI strip on surface or in recess for connections etc. as required.

Providing and fixing 25 mm X 3 mm Copper strip on surface or in recess for connections etc. as required.

Providing and fixing 25 mm X 3 mm GI strip on surface or in recess for connections etc. as required.

S.I.T.C. of Vacuum interrupter bottle suitable for existing 11KV VCB of 400A/630A (Make: Alstom/ Kirloskar/ ABB/ Areva/ Crompton/BE Make) including dismantling & removing existing faulty Vacuum interrupter per bottle, making connections & high voltage testing etc. complete as required.

Supplying and making following type of cable end jointing for following size of 3 core, XLPE aluminium conductor (armored) cable of 11KV grade i/c cutting, removing the existing faulty cable end termination wherever required etc. complete as required. (Note: Make of jointing kit- Denson/ Raychem or equivalent)

a) Indoor Type Joint for cable-sizes 150sq.mm. to 185 sq.mm.

b) Outdoor Type Joint for cable-sizes 150sq.mm. to 185 sq.mm.

c) Straight Type Joint for cable-sizes 120 sq.mm. to 150 sq.mm.

Supply installation and testing of 11 KV HT VCB mechanism and testing, meggaring etc complete as required.

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

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

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

Supplying, Laying and fixing, testing, commissioning of following size HT cable of 11 KV grade, Aluminium conductor armored power cable etc. complete as required.

a) 3 core 240 sq.mm

b) 3 core 300 sq.mm

Supply and fixing of Rack in & Rack out assembly for 630 amp to 800 amp different type 11 KV HT VCB .

Supplying, installing, testing and commissioning 630A to 1000 Amp of 4 pole, 50kA, 415V, Manual draw-out type air circuit breaker of following full-load current rating, in the existing LT/MV panel i/c carrying-out required modifications in the panel, in the associated incoming/outgoing bus bars of the panel for proper mounting & connections of the ACB, also providing suitable interlocking connections, control wiring, end terminations etc. complete as reqd as per the site requirement. (Make: L&T/ABB /Siemens) L&T cat no. SL95331 or SS Make

Checking & arresting of Oil Leakages from 500 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.

Replacement with Installation of 11KV / 110 Volt PT Class 0.5 accuracy and 100 VA burden with high voltage testing for VCB Type HT Panel etc complete as required including dismantling of old defective burnout PT.

Supply and fixing of 63 Amp TPN switch with connection testing complete as required.

Painting existing LT panel including removing the rust , sign writing, providing gaskets, closing the wit proper nut blots etc complete as required

Dismantling, of burnt out 11kv 110 volt P.T i/c repairing and rewinding, replacement of spout with connection, meggering, high voltage etc. complete as required.

Less credit on account of dismantled material.