Construction Preparations Before Replacing High-voltage Disconnect Switches

In the construction organization plan for replacing the isolator high voltage system according to the planned power outage schedule, a detailed survey of the site environment and the condition of the existing equipment is required first. The survey includes the model of the high voltage isolator system, the condition of the insulating supports, the wear degree of the mechanical transmission mechanism, and the continuity of the contacts. Any parts found to have cracks, corrosion, looseness, or abnormal noise should be included in the replacement or repair list, and their original condition should be recorded for comparison.

The materials plan should cover all consumables and vulnerable parts, including the new high voltage isolator switch system body, insulating supports, fixing bolts, operating mechanism, padlock device, and insulating gaskets. Material specifications must be consistent with the original system, and compatibility verification must be clear. Upon arrival of the parts, their certificate numbers, manufacturing dates, and appearance should be checked for integrity.