Common use of Circuit Breakers Clause in Contracts

Circuit Breakers. i. Power Factor and 100Amp ductor tests on all circuit breakers. ii. Inspect physical and mechanical condition. Ensure proper lubrication by maintenance staff. iii. Motion analyzer testing of the circuit breakers rated 34.5kV and above: Test data to be provided for a trip operation on both trip circuits, a close operation and a close –open (trip free) operation based on first contact closed to initiate the trip. iv. Verify a minimum of 4 closes prior to lockout on pneumatic/pneudraulic/hydraulic operated breakers with these sources fully charged and de-energized. v. Verification of SF6 gas pressure alarms and tripping of the breakers at trip pressure on both trip circuits. vi. Perform AC\DC hi pot- acceptance test on Vacuum Interrupters, if vacuum breaker. Hi pot voltage to be held to OEM specified acceptance level and AC/DC recommendation. vii. Direct maintenance staff to replace common wear parts (contacts, etc.) with the expectation that the circuit breaker will operate reliably for a minimum of 6 years from first date of service. viii. Oversee Breaker Inspection and assure recorded measurements per the manufacturer instruction book. ix. All/Any Circuit Breaker models are to be included in the scope of the contract. The list would include models from manufacturers such as GE, ABB, Westinghouse Siemens, ▇▇▇▇▇▇ Hammer, Joslyn, S&C, Alstom, Allis Chalmers, Mitsubishi, HVB, Brown Boveri, HICO, ▇▇▇▇▇▇ ▇▇▇▇▇▇, Federal Pacific to name most.