Circuit breaker closing process 1 Circuit-breakers 1 Controllers 1 Damped oscillatory wave 1 Electric circuit breakers 1 Electric transformer testing 1 Electromagnetic environments 1 Field probes 1 Medium voltage 1 Phase controllers 1 Probes 1 Short circuit tests 1 Test stands 1 Time-phase controller 1 Timing circuits 1 Unloading 1 circuit breaker closing process 1 damped oscillatory waves 1 field probe 1 short circuit tests 1 time-phase controller