"Mechanical vibration" detection of a 220kV GIS station in Sichuan

2018/5/17 17:37:13  view Category:Live/nondestructive testing services

A 220kV GIS station in Sichuan: the amplitude of a circuit breaker interval vibration signal in March 2017 is higher. After analysis, it is considered to be the vibration signal caused by external fastening and loosening. By September, all the external fastening bolts were further strengthened, and the signal amplitude, as shown on the right, had fallen to a reasonable level.