Write down the circuit breaker with their rating used in traction substation. Explain any one.
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Circuit Breaker With Their Rating Used in Traction Substation: Rated capacity of a circuit breaker is 750Amps at 25 kV, 500MVA. Its overall tripping time is 0.14 seconds composed of 0.04 seconds for relay operation and 0.1 seconds for opening of breaker contacts. There are various types of circuit breakers are available according to the type of arc extinction medium but in case of traction substation application, mostly Minimum Oil Circuit Breaker (MOCB) is preferred.

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