Why Are Parallel Groove Clamps Not Suitable For Frequent Disassembly And Assembly?

Like most mechanical connectors, the structure of groove clamp undergoes microscopic wear during repeated disassembly and assembly, causing changes in the geometry of the contact surface and affecting the fit with the conductor.

The contact surface of parallel groove consists of two parallel grooves designed to grip the conductor tightly. Each disassembly and assembly subject the metal contact surface to stress cycles. This localized plastic deformation and frictional wear gradually weaken the original contour within the groove of parallel groove clamp connector, reducing the clamping force. The reassembled contact interface under these conditions cannot maintain the same metal-to-metal contact as during the initial installation.

Material hardness is related to the fatigue characteristics of common materials such as aluminum alloys and copper alloys. Repeated disassembly and assembly of pg clamp connector causes slight deformation of the fastening bolts and clamps, altering torque transmission performance and resulting in uneven force distribution during connection of pg clamps. This change directly affects the long-term stability of single bolt parallel groove connector, placing higher demands on the precision of on-site installation.