Essential work of HT/LT switchgear and panels installed at various T.E Building under EE(E)LR MTNL,New Delhi.

Amount

Supply, Installation, Testing & Commissioning of 11kv 3 Phase 50Hz 350MVA sheet steel, dust and vermin proof, free floor standing extendable type H.T.Panel, having 4 Nos 230V A.C motor operated Draw-out type 630 Amp. Vacuum Circuit Breakers (one incoming & three outgoing) with necessary Protection, Measuring instrument including Energy analyzer, Indicating instrument, IDMT relay, auxlary master relay, power Pack 220 Volt AC & 24 Volt DC, C.T 1 I/C 150/5/5 & 3 O/G 60/5/5, P.T, termination arrangement for incoming and outgoing XLPE-11KV cable, terminal blocks, earth bus bar, Sign writing etc. as per detailed specifications attached including dismantling HT connections of existing HT Panel, shifting the existing HT Panel at location decided by the engineer in chartge within the building permises, making necessary modification to the existing foundation if any, to suit the new HT panel, making HT connections for incoming and outgoing of the HT Panel after suitable testing complete as required. ( Make: KIRLOSKAR/CROMPTON GREAVES/ SIEMENS/AREVA/ABB) (1 Set 4 Nos.)

Supply and fixing of 630 Ampere HT VCB bushing for tulip contact,bushing rod,insulator,buffer,grommet,centre phase shroud,naber washer, release/closing coil(suitable voltage rating as existing) and testing meggering and hipot testing etc complete as required.

Supplying and making indoor cable end termination with heat shrinkable jointing kit complete with all accessories including lugs suitable for following size of 3 core, XLPE aluminium conductor cable of 11 KV grade as required. a) 300 Sq. mm

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

Testing and Calibration of IDMT relay (3 module comprising of 2 over current relay and 1 Earth fault) with secondary injection test set i.e.cleaning, servicing of contacts, tightening of loose contacts, testing, repair etc, i/c testing of the complete system of HT panel for checking the actual working of CTs their wiring, connected IDMT realy, 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 complete as required.

Testing and meggering, 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 power pack unit having input 220 Volt AC and out put 24 Volt / 48 Volt DC including making inter connection sutable for exisiting H.T System etc complete as required as per site requirement..

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.

Supplying and fixing 150 AH capacity low maintenance battery (in fully charged condition) along with connecting leads,copper thimbles and terminals including making connections, testing etc complete as per the site requirement. (Make: Okaya/Amron/Sukam/Exide)

Supply and fixing of 11 KV Spout in VCB and dismantling of brunt out spout with high voltage testing, meggring etc complete as required.

S.I.T.C. of metering panel of size {0.45m (l) x 0.25m (w) x 0.50m (h)} accomodating the following accessories including inside and having front access and made out of 16 SWG CRC sheet steel, with IP 52 protection, complete with interconnection, wiring and control wiring for CT and energy meter and other control with ferrule and having following items a) KWH Meter 96X96 mm. 3 Phase 4 wire [Qty: 2 Nos] b) CT 250/5 A, 10 VA, Class 1. [Qty: 6 Nos] c) Control relay (Auxiliary Contactor) [Qty: 3 Nos] d) Add-on aux. contact block. [Qty: 1 Nos] e) SP MCB (6-16 Amp) [Qty: 8 Nos] and wiring and miscellenous material connections and testing etc complete as reqd. [Material Make: i) Digital KWH Meter: L&T Cat. No. WL440010OOOO / Rishabh Model: Rish Delta Energy (DL30); ii) Add-on aux. contact block : L&T ; iii) MCB: Schneider/L&T/Havells Rating: 6-16 Ampere; iv) Current Transformer: Rishabh TW e Series/ Kappa/ Gilbert Maxwell; v) Control relay: L&T MX0 22 E (2 NO + 2 NC)]. [Note: i) The metering panel must be designed and controlled in such a way that the metering for Normal and DG supply must be done automatically itself during transit of supply. ii) Moreover the above item also includes supplying and fixing of 1.5 sq.mm copper wire for the internal wiring, power supply for above meters and CT sensing wiring to the panel. iii) The agency has to provide and paste the computer printed wiring layout diagram complete with interconnections wiring and interlocking of the above metering panel and nothing extra shall be paid on this account.]

Supplying and Fixing of 4 x 1.5 Sq.mm size pvc insulated and pvc sheathed copper conductor armoured cable of 1.1 KV grade in open masonary duct/on cable runway/surface/riser runway including providing end terminations,sadling etc complete as required. (Make: Havells/ KEI/ Polycab/ Finolex)

Supplying and fixing of 30 Ampere 8 way bakellite connector on a phenolic laminated sheet including fixing it on the wall etc complete as required as per site location.

Repairing of 500 KVA, 3 phase, 50 Hz oil immersed naturally cooled step down type distribution transformer including complete rewinding of HT coil each with super enamelled copper winding along with heavy duty HT paper insulation and LT coil reinsulation & rewinding it with super enamelled copper winding including replacement of all assemble material like gasket, bushing terminals etc as required,heating in the oven to rise the magger value including checking any leakage in the transformer oil chamber, fins repairing the same with welding etc complete as required defective spares with Testing & commissioning etc as reqd.

Servicing and cleaning up to 1600 KVA, 11 KV / 415 Volt Dry type / Oil type transformer i/e. turn ratio test, earth resistance, temprechure relay, flexival joint connection and checking its operation, tightening of HT/LT connection and adjustment of tripping meggering, high port testing checking protection etc complete as required.

Supplying,installing,testing and commissioning of 1250 amp 3 pole air circuit breaker manual draw-out type in the existing LT power supply panel in the sub-station i/c carrying out the required bus bar modification for proper mounting of the ACB in the panel and in the associated incoming/outgoing bus bars etc of the panel, providing suitable interlocking connections,control wiring,end terminations and completely as reqd as per the site requirement to complete the job. (Make: L&T/ABB/Siemen/Schneider).

Supplying,installing,testing and commissioning of 1600 amp 3 pole air circuit breaker manual draw-out type in the existing LT power supply panel in the sub-station i/c carrying out the required modification for proper mounting of the ACB in the panel and in the associated incoming/outgoing bus bars etc of the panel, providing suitable interlocking connections,control wiring,end terminations and completely as reqd as per the site requirement to complete the job including dismantling the existing faulty breaker etc as required. (Make: L&T/ABB/Siemen/Schneider)

Supplying,installing,testing and commissioning of 1600 amp 4 pole air circuit breaker manual draw-out type in the existing LT power supply panel in the sub-station i/c carrying out the required modification for proper mounting of the ACB in the panel and in the associated incoming/outgoing bus bars etc of the panel, providing suitable interlocking connections,control wiring,end terminations and completely as reqd as per the site requirement to complete the job including dismantling the existing faulty breaker etc as required. (Make: L&T/ABB/Siemen/Schneider)

Providing and fixing of following rating and breaking capacity TPMCCB with terminal spreaders including drilling holes in existing cubicle panel, making connections and suitable modification if required for fixing the MCCB etc complete as required as per site location. a) 800 Amp rating, 50 KA breaking capacity TPMCCB. (Make: L&T Model: DN4-1250N).

Drawing out the air circuit breaker of rating 800/1600/2000/2500/3200 Ampere 3 Phase, 415 Volt, 50 Hz from the MV Panel, cleaning and augmentaion the same,disassembling, decarbonizing the arching contacts & arcing chutes completely, cleaning the fixed and moving contacts with CTC, checking the control wiring for continuity, tightening the connections, replacement of minor parts like spring,nutbolts and washers,setting right the mechanism, lubricating the moving mechanical parts,checking the contact resistance of fixed and moving contacts,reassembling the ACB same complete as per site requirement.

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 for for transformer etc as required.

Supply and topping up of new transformer oil having 50 KV dielectric strength etc complete as required. (Make: Power oil/ Savita/Gulf)

Providing and fixing the following electrical components i/c making the connections,testing etc with control wiring wherever complete as required as per the site requirement. i) Five steps / six steps apfc relay. (Make: Epcos BR6000 / L&T Model: ETACONM005R)

ii) Three Phase Digital Ammeter. [Make: L&T Cat. No. WL131010OOOO / Rishabh Model: Rish Eine I (EP99)]

iii) Three Phase Digital Voltmeter. [Make: L&T Cat. No. WL132010OOOO / Rishabh Model: Rish Eine V (EP99)]

iv) LED Indication lamp complete with wiring & connections.

v) Current Transformer Ratio: 2500/5. (Make: Rishabh/ Kappa/ Gilbert Maxwell /AE)

vi) Current Transformer Ratio: 800/5. (Make: Rishabh/ Kappa/ Gilbert Maxwell /AE)

Credit for old burnt/ unrepairable/ unusable/ faulty dismantled material being contractor's property.

DUBEY ELECTRIC WORKS