Common Problems That Cause High-voltage Disconnectors To Malfunction

The rain shield on the intermediate mechanism box of some high voltage isolator units has been found to be so corroded that it cannot be touched. The drive shaft of the high voltage isolator switch blade mechanism is connected to the vertical drive shaft using a semi-cylindrical matching structure. During electric operation, the semi-cylinder deforms and causes relative displacement, preventing the hv isolator switches from closing and opening properly. There have also been cases where rust on the grounding blade has caused the shaft pin to break, rendering the hv isolator switch inoperable.