MA Hutao, HUANG Zhangqiang. Falling-off Failure Analysis on Insulation Lever of LW6-220 Circuit Breaker[J]. High voltageapparatus, 2014, 50(11): 128-132+138.
MA Hutao, HUANG Zhangqiang. Falling-off Failure Analysis on Insulation Lever of LW6-220 Circuit Breaker[J]. High voltageapparatus, 2014, 50(11): 128-132+138. DOI: 10.13296/j.1001-1609.hva.2014.11.022.
The failed LW6-220 circuit breakers with falling-off failure of insulation lever are analyzed theoretically
and are compared with normal LW6-220 circuit breaker. Conclusion is drawn that the falling-off failure of insulation lever of the LW6-220 circuit breaker is related to material
manufacturing process
circuit breaker structure
and use time. Moreover
a direct inspection method and a testing method are presented for preventing the LW6-220 circuit breaker from falling-off failure of insulation lever.