National Institute For Interdisciplinary Science And Technology Tender

SITC OF 11 KV VACCUM CIRCUIT BREAKER

Supplying of indoor type floor mounted metal clad, 11 KV VCB panel to match with existing Crompton Greaves 11 KV VCB panel Sr.No 32241VG, totally enclosed & fully interlocked, horizontal draw out, horizontal/ vertical isolation type breaker as per IS 13118, as amended up to date and additional specifications, having capacities as mentioned below, single break, trip-free mechanism, motor operated spring charge mechanism, and auto/manually closing breaker suitable for use on 11 KV, 3 Phase, 50 Hz AC supply with short circuit fault level of 350 MVA, complete with self contained, fully interlocked, rack in and rack out mechanism, air-insulated but encapsulated copper bus bars of 800 Amps capacity, breaker featured with mechanical ON/OFF indicator with hand trip device, spring release coil, shunt trip coil and auxiliary switch of 4 NO+4NC and equipped with following switchgear and accessories as per Drawing and BOM attached (Note- Cost of end termination not included in this item) (Approved Make: Crompton Greaves/ Schneider/ ABB) (A) 1 No- 11KV, 800A, VCB Min Breaking Capacity- 18.4kA for 1 sec, Min Short time rating- 18.4kA for 1 sec (B) 1 No- Set 800A rated main horizontal aluminium busbar size 12x50 Sq. mm, 2 Nos per phase with a short time rating of 18.4kA for 1 sec with heat shrinkable PVC sleeve (C) 1 No. – 11 KV / 110 Volts PT Class 0.5 accuracy and 100 VA burder with 1 No. Voltmeter (0-15KV), digital* type, selector switch for voltmeter and protection fuses/MCB for HT metering upto 12 KV on incomer. (D)1 No. – (0-30 A) scale Ammeter,digital* type, selector switches for ammeters. (E) 1 No. – Microprocessor based numerical, communicable, draw out type relay with Modbus protocol 50/51/50N/51N (3 O/C+1E/F) relay (F) 1 No. – Set of dual core dual ratio 3 CTs 30/5-5 A of 15 VA burden and accuracy Class–1 for metering and class 5P10 for protection. 1 No. - Master Trip Relay 86 1 No. - Tripcircuit Supervision Relay (TCS) 1 No. - Announciator

Supplying of indoor type, 11KV, 800A, VCB, Min breaking capacity- 18.4kA for 1 sec, Min short time rating- 18.4kA for 1 sec, compatible to panel Sr.No 32241VG CT in existing Crompton Greaves 11 KV VCB panel, totally enclosed & fully interlocked, horizontal draw out, horizontal/ vertical isolation type breaker as per IS 13118, as amended up to date and additional specifications, having capacities as mentioned below, single break, trip-free mechanism, motor operated spring charge mechanism, and auto/manually closing breaker suitable for use on 11 KV, 3 Phase, 50 Hz AC supply with short circuit fault level of 350 MVA, complete with self-contained, fully interlocked, rack in and rack out mechanism, air-insulated but encapsulated copper bus bars of 800 Amps capacity, breaker featured with mechanical ON/OFF indicator with hand trip device, spring release coil, shunt trip coil and auxiliary switch of 4 NO+4NC as per Drawing and BOM attached (Note- Cost of end termination not included in this item) (Approved Make: Crompton Greaves/ Schneider/ ABB)