ABSTRACT
Transient recovery voltage (TRV) refers to the voltage appearing across circuit breaker contacts after it interrupts current. The circuit breaker must withstand TRV in order to complete the current interruption process. For circuit breakers rated above 1 kV, the TRV is a crucial application criterion, along with several other important factors:
Voltage rating
Interrupting current ratings
Capacitive current switching (inrush, outrush, close-and-latch ratings)
Out-of-phase switching
Generator breakers pose a special case due to asymmetrical current interruption
