Upgradation of 11kV HT Panel and Refurbishment of Generators in the Electrical Substation at CSIR-NIIST, Trivandrum-2025-26

Supplying, installation, testing and commissioning 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 specifications attached (Note- Cost of end termination not included in this item) (Approved Make: Crompton Greaves/ Schneider/ ABB) (A) 1 No- 11KV, 800A, VCB Breaking Capacity- Minimum 18.4kA for 1 sec, Short time rating- Minimum 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. (G)1 No. - Master Trip Relay 86 (H)1 No. - Tripcircuit Supervision Relay (TCS) (I)1 No. - Announciator

Supplying, installation, testing & commissioning of indoor type, 11KV, 800A, VCB, breaking capacity- minimum 18.4kA for 1 sec, short time rating- minimum 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)

Supplying & installation of 11KV VCB spout in existing Crompton Greaves 11 KV VCB panel compatible to panel Sr.No 32241VG VCBs

Supplying, installation, testing and commisioning of Daily service fuel tank of 990 liters capacity fabricated out of minimum 3 mm thick M.S. sheet complete with all standard accessories and fuel piping between fuel tank and diesel engine with MS class ‘C’ pipes of suitable dia. Complete with valves, level indications & accessories as required as per specifications.

Painting of 500 KVA Generator set exhaust line with heat-resistant aluminium paint (600°C) with double coat after cleaning the pipe using emery cloth & paper or disc, etc, as required.

Exhaust pipe cladding for the 500 KVA Generator set 8" pipeline using 50mm thick Rockwool materials, density not less than 120kg/m3 and Aluminium cladding (24 SWG) for the complete portion, chicken mesh, etc, as required.

Exhaust pipe cladding for the 500 KVA Generator set 5" pipeline using 50mm thick Rockwool materials, density not less than 120kg/m3 and Aluminium cladding (24 SWG) for the complete portion, chicken mesh, etc, as required.

Muffler Cladding for the Diesel Generator Exhaust Line System using 50mm thick Rockwool materials, density not less than 120kg/m3 and Aluminium cladding (24 SWG) for the complete portion, chicken mesh, etc, as required.