Initial Transient Recovery Voltage (ITRV) for high voltage circuit breakers
Transient Recovery Voltage (TRV) stress similar to that encountered during a short-line fault can also occur due to the busbar connections on the supply side of a circuit breaker. This specific TRV stress is known as Initial Transient Recovery Voltage (ITRV). Given the relatively short distances involved, the time to reach the first peak of ITRV is typically less than 1 microsecond. The surge impedance of the busbars within a substation is generally lower compared to that of overhead lines.The f