Inspection Of Low-voltage Pole-mounted Circuit Breaker Clamps

For the inspection of equipment clamps, a professional inspection procedure should be developed based on the on-site operating conditions. First, visually inspect Lv Pole Mounted Circuit Breakers and its connecting parts to identify signs such as cracks, obvious deformation, or metal oxidation. Visual inspection is a crucial step in determining whether the clamps have deformed and whether fasteners are loose. For overhead cable systems, this type of inspection is closely related to the mechanical condition of the power fittings.

Next, the contact condition between the clamps and the conductors should be tested using specialized tools at the clamp connection points. In low-voltage environments, as components connecting the overload current transmission path, changes in the contact resistance of the clamps directly affect current transmission performance. Therefore, using a contact resistance tester provides quantitative data on the contact performance of the clamps, helping to determine whether the existing clamps have exceeded their service life or pose a safety hazard.