East Central Railway Tender

Supply, fixing, connection and testing of 500 kVA Compact Sub-station (CSS) with following specifications: RMU: RMU type 8DJH ST: RRL, Non extensible, indoor, Manual operated, 3way, (RRL) consisting of 2 Nos Outgoing LBS (R) & 1 nos. Outgoing VCB feeder (L) with protection 4 CT, Self Powered relays (Non-Communicable) Rated Volatege: 11kV Rates power frequency withstandVoltage: 28 kV Rated lightning impulse withstand voltage: 75 kV Rated current for ring main feeder: 630 A Rated Short Circuit Current: 20kA/3sec VCB: VCB should have self powered relay for overcurrent and earth fault protection without connectivity to SCADA. 3 phase definite time over current and short circuit protection with variable tripping times. CT for VCB should have CTR: 40/1A, class: 10P10 2.5 VA. Each load brek switches should include manual SF6 three position switches. Transformer: Rating: 500kVA, 11kV/433V DYn11 Type: Copper wound, CRT Dry type transformer Off load tap switch of range +- 5% in steps of 2.5% Insulation Class: F Max losses at No load: 1.5 kW Max losses at Full load: 6 kW LV Feeder: Incomer: Qty: 01 No ACB: 800A, 433V, 3P, 50 Hz, 25 kA with microprocessor based trip unit release for over load and short circuit protection. Outgoing Feeder: Qty: 03 No MCCB: 400A, 433V, 3P, 50Hz, 25 kA fixed manual with microprocessor based trip unit release for over load and short circuit protection. Outgoing Feeder: Qty: 03 No MCCB: 400A, 433V, 3P, 50Hz, 25 kA fixed manual with microprocessor based trip unit release for over load and short circuit protection. Outgoing Feeder: Qty: 03 No MCCB: 250A, 433V, 3P, 50Hz, 25 kA fixed manual with microprocessor based trip unit release for over load and short circuit protection. Enclosure for CSS: Degree of protection: IP 54 for enclosure and IP 23 for Transformer compartment. Make: ABB, Schneider, Siemens, L&T, Powerstar.

Supply and erection of earthing station with GI pipe "B" class TATA/JINDAL/Bansal of size 3 mts. long 50 mm minimum dia and provided with alternate layer of charcoal and salt in the 5 earth pipe around the GI pipe and suitable clamping arrangement including supply and connection with 6 SWG GI wire from earth pipe to panel board as per site requirement. Bore dia of size 300mmx3000mm, digging will be done by auger. Minimum qty. of each enhancement material to be supply is 50 Kg per pit.