The Importance Of Contact Opening Design For High-voltage Disconnect Switches

The moving contact of High Voltage Disconnect Switch rotates around the rotation axis and moves away from the stationary contact to form an isolation distance. According to industry standards and field installation specifications, this opening angle should not be too small. An opening angle smaller than the specified angle will result in insufficient contact separation, affecting the clarity of the visible break and potentially negatively impacting insulation performance.

The appropriate contact opening angle is also related to factors such as the torque of the operating mechanism, the shape of the contact structure, and the accuracy of the linkage device. Disconnect switches typically employ a rotation angle design to ensure sufficient air gap between the moving and stationary contacts when disconnected, thus providing a clear view of the power outage status during maintenance and repair, and improving the overall transparency of the power supply system's operation.