Haryana Power Generation Corporation Limited Tender

SF6 Gas Circuit Breaker Voltage:72.5KV; Normal Current:1600A, Frequency:50HZ; Power frequency withstand voltage (RMS): 160KV; Lighting Impulse withstand Voltage: 325K vp First Pole to clear factor: 1.5; Short time with stand current :31.5KA, duration of short circuit; 3 second; Short circuit making current: a) Symmetrical:31.5KA b) Asymmetrical: 37.1KA Short circuit making current: 79 KAp; Out of phase breaking current: 7.9KA, Operating sequence: 0-0.3s-CO-3min-CO; SF6 Gas Pressure at 200C. 1013 hpa(bar); Total mass of SF6 gas :4 Skg; Control Circuit voltage: 110V DC Note: A) Following protection required at Circuit breaker. 1. Circuit Breaker Lockout and lock in 2. Gas pressure low 3. Spring charged/spring discharged 4. DC ON/DC Off 5. DC Failure Protection 6. Trip Coil 1 Circuit faulty B) Dismantlement of old breakers and installation, testing and commissioning of new SF6 Breaker will be in the scope of the suppler. C) All the old dismantled Circuit breakers will be stored in the Hydel Store by the suppler D) All consumable & other material required to complete the commissioning work shall remain in the scope of firm.