Caution: under-voltage release must be electricity, circuitbreaker can be closed, otherwise will damage circuit breaker!
敬告:欠电压脱扣器必须先通电,断路器才能再扣及合闸。否则将损坏断路器!
2
Although synthetic test method has been widely applied in breaking test of circuit-breaker, as synthetic making test under full voltage, it has been relatively less studied and applied.