Improvement Plan Developed Based On Analysis Of The Refusal To Close Phenomenon Of The Spring Operating Mechanism Of The High-voltage Disconnector

Check the number of springs in high voltage isolator; they must meet the design requirements for the two springs in high voltage isolator switch.

For hv isolator switches equipped with a single large spring, add a small spring and operate the switches. Find the state where hv isolator switch can just close and open. Also, measure the length H1 of the spring's outer coil at both ends in this state (measured in the closed position).

For high voltage electrical isolator switches equipped with two springs, find the state where isolator high voltage can just close and open. Also, measure the length H1 of the spring's outer coil at both ends in this state (measured in the closed position).