SPECIAL REPAIR OF BER OCB TO VCB UNDER STN HQ KARGIL UNDER GE KARGIL.

Dismantaling and taking down old unservicable OCB of any size/capacity including disconnecting outgoing & incoming connection carefully and depositing it into MES store yard complete all as specified and directed.

HT VCB Panel:- Supplying, Installation, Testing & Commissioning indoor type panels shall be constructed from CRCA and Alu-Zinc coated steel sheet of 2 mm thickness, floor mounted metal enclosed, 11 KV indoor VCB panel with 5 nos VCBs (1 INCOMER & 4 OUTGOINGS), totally enclosed and fully interlocked, horizontal draw out, horizontal isolation type floor rolled breaker as per IEC-62271-1,100, 200, as amended up to date and additional Specifications, having capacities as mentioned below, single break, trip free mechanism, manually charged and manually closing breaker suitable for use on 11 KV, 3 phase, 50 Hz A.C. supply with short circuit fault level of 18.3KA for 3 sec (350MVA) , Panel shall be full internal arc tested i.e. in all three chambers at 18.3KA for 1 sec for safety purpose (AFLR). compete with self contained, fully interlocked, rack in and rack out mechanism, air insulated HT sleeved (PVC sleeve is not accepted) self supported aluminium bus bars of 630 amps capacity, breaker featured with mechanical ON/ OFF indicator with hand trip coil and auxiliary switch of 4 NO+ 4NC and equipped with following switchgears and accessories. Make of Vacuum interrupter, circuit breaker, Panel, relays & meters shall be same. Cable compartment suitable for 2RX3C x 240 sq. mm XLPE 11 KV cable (Cable entry from bottom) end termination with heat shrinkable jointing material etc as reqd. There must be a viewing window on VCB chamber door and same must be as per Internal arc test report. The basic insulation level of entire panel shall be 38KV(RMS)/95KV(Peak) considering installation altitude at 2800 meter from MSL. Make: ABB(LeanGear-Vind), Schneider(PIX-HVX), Siemens(NX-Air)

Incoming - 1 No- 630 Amp VCB and shall be consisting of (a) 11 KV / 110 Volts PT Class 0.5 accuracy and 50 VA burden with 1 No. Voltmeter(0-15 KV), digital type selector switch for voltmeter and protection fuses / MCB for HT metering upto 12 KV on incomer. (0-50-100A) comply with IS 3156. PT must not be on the top of the panel. It must be floor rooled placed rear side of panel or on the CB trolley -1 Set. (b) Digital type multi function meter and Digital type Ammeter & Voltmeter - 1 No. (c) Flush mounted type Microprocessor based numercial IDMT relay (VCB Panel manufacturer's own Make) with O/C, E/F, U/V, O/V communicable on modbus protocal for protection and Status monitoring with Master trip and Trip Ckt Supervision relay. Relay shall have programable 16 digital Inputs and 10 outputs. -1 No. (d) Dual core /single core; separate sets, dual ratio 3 Nos. CTs 100-50/1-1 A of 5 VA burden and accuracy class 0.5 for metering and class 5P10 for protection comply with IS 2705 - 1 Set (e) R,Y,B ON, OFF, Trip Indication with Control MCB - 1 Set (f) Annunciator -8 Window with hooter- 1Set (g) Power pack with 230 Volt AC input & 30 Volt DC continuous output battery based suitable for closing / tripping/indication etc.

A. Outgoing - 3 No- 630 Amp VCB and each shall be consisting of (a) 630 Amp VCB - 1 No (b) Digital type multi function meter & Digital ammeter-1 No (c) Flush mounted type Microprocessor based numercial IDMT relay (VCB Panel manufacturer's own Make) with O/C, E/F communicable on modbus protocal for protection and Status monitoring with Master trip and Trip Ckt Supervision relay. Relay shall have programable 4 digital Inputs and 6 outputs. -1 No. (d) Dual core dual ratio 3 CTs 50/1-1 A of 5 VA burden and accuracy Class-0.5 for metering and class 5P10 for protection - 3 Nos. (e) Annunciator -8 Window- 1 No (f) Hooter - 1 No (g) Flash mounted Aux. Relay as required for OTI, WTI & Buchloz Alarm & Trip functions B. Outgoing - 1 No- 630 Amp VCB and each shall be consisting of (a) 630 Amp VCB - 1 No (b) Digital type multi function meter & Digital ammeter-1 No (c) Flush mounted type Microprocessor based numercial IDMT relay (VCB Panel manufacturer's own Make) with O/C, E/F communicable on modbus protocal for protection and Status monitoring with Master trip and Trip Ckt Supervision relay. Relay shall have programable 4 digital Inputs and 6 outputs. -1 No. (d) Dual core dual ratio 3 CTs 60/1-1 A of 5 VA burden and accuracy Class-0.5 for metering and class 5P10 for protection - 3 Nos. (e) Annunciator -8 Window- 1 No (f) Hooter - 1 No (g) Flash mounted Aux. Relay as required for OTI, WTI & Buchloz Alarm & Trip functions (h) Power panel pack with 230 Volt AC input & 30V Volt DC continuous output battery based suitable for closing / tripping / indication etc- 01 Set

Supplying and laying synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11KV for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade, of size 95 sq mm 3 core.

M&L for Provision of earthing with 600x600x6.0mm galvanised steel earth plate electrode buried vertically in ground (earth pit not less than 2.25 metre deep below normal ground level) with top edge of the plate at a depth of not less than 1.5m below ground level, connected to and including G.I. Strip of size 32 X 6 mm by means of bolts, nuts and check nuts and washers of galvanised steel (and 40mm dia GI medium grade pipe for protection of G.I strip) to the extent of 7.5 metres as earthing lead and connecting to the eqpt, viz transformer, L.T. kiosk, H.T, lightening arrestors etc. including charcoal dust and salt packed all around the earth plate in the earth pit all as per electrical plate No. 3 of SSR Part I (2009) including PCC foundation / chamber in mix 1:2:4 type B1 with M.S. angle iron frame, C.I. Cover with provision of locking arrangement and 20mm dia light grade G.I. Pipe from top edge of the earth plate upto M.S. funnel with wire mesh provided inside the concrete earth pit for watering arrangement, M& L complete including excavation and earthwork in any type of soil strata and testing complete all as specified and directed. (Note : GI strip and earth protection pipe upto and including 7.5 m length shall deemed to be included in unit rate quoted by contractor)