Mechanical Dimensional Deviations Cause Assembly Problems With High-voltage Disconnect Switches

Assembly deviations first create gap errors within the overall product structure, causing the relative position between the moving and fixed contacts to deviate from the preset range, resulting in jamming during rotation or sliding of the operating mechanism. The mechanical stroke and contact pressure of hv isolator depend on precise dimensional fit. When the dimensional adjustment does not meet the specifications, the transmission link of the operating mechanism may become discontinuous or the force transmission may be insufficient, thereby affecting the mechanical life and the consistency of multiple operations.

Another issue is misalignment of mounting holes or incomplete insertion of locking components at the junction with the switchgear frame. Such deviations can alter the mechanical force path between components hv isolator switch, making the entire unit more prone to loosening under external impact or vibration. For dimensional adjustment deviations, it is generally necessary to refer to the manufacturer's dimensional drawings and specifications for positioning and measurement, and adjust the positions of relevant connecting parts to restore the design dimensional standards.