High Voltage Disconnector Maintenance

high voltage isolator The connection point of the connecting plate is overheated and discolored, indicating poor contact and large contact resistance. When inspecting, the connection point should be opened, the contact surface should be filed flat and then polished with sandpaper (but the zinc plated on the switch connecting plate should not be removed), and then the screws should be tightened, and spring washers should be used to prevent loosening. If there is a side-hit phenomenon in the moving contact, the screws that fix the contact can be rotated, or the position of the supporting insulator can be slightly moved to eliminate the side-hit; when the three phases are out of phase, the screws at both ends of the pull rod insulator can be adjusted to change its effective length to overcome it.
The contact pressure between the contacts can be achieved by adjusting the clamping spring, and the degree of clamping can be checked with a feeler gauge.
Vaseline can generally be applied between the contacts to reduce friction resistance, extend service life, and prevent contact oxidation.
high voltage isolator switch When in the disconnected position, if the angle or distance between the contacts does not meet the requirements, it should be adjusted through the pull rod insulator.