Instructions For The Arrangement Of Stationary Contacts Of High-voltage Disconnect Switches

In the High Voltage Disconnect Switch device, the stationary contact is typically positioned at the top of the switch structure. This approach stems from established industry design principles, aiming to keep the stationary contact fixed and create a clear switching interface with the moving contact.

As the fixed end that mates with the moving contact, the shape and construction of the stationary contact balance contact fit precision and mechanical durability. Some designs divide the stationary contact into a working contact and an arc-suppressing contact, with the arc-suppressing portion located above the working contact to facilitate the insertion and disengagement of the contact fingers.

This arrangement ensures the stability of the high-voltage disconnector during "closing" and "opening" operations. The position above the stationary contact facilitates the design of the contact blade's movement path, allowing the moving contact to smoothly insert into or remove from the stationary contact while avoiding structural interference.