Reasons And Treatment Methods For High Voltage Disconnector Refusal To Close

Causes and treatment methods of hv isolator switch refusal to close.
1) The shaft pin falls off and the cast iron part breaks, causing high voltage electrical isolator to be disconnected from the transmission mechanism. During maintenance, the shaft pin can be fixed and the damaged parts can be replaced.
2) If the electrical circuit fails, the contact state of the contact surfaces of the isolator high voltage closing circuit should be checked, and whether the wires are broken.
3) The transmission mechanism is loose, so that the two contact surfaces are not in a straight line.
During maintenance, the loose parts should be adjusted so that the two contact surfaces are in a straight line.