Analysis Of Main Busbar Connection Of Distribution Cabinet

The main busbar in section Powbinet uses copper busbars for connection, ensuring good contact. The cross-section and shape of the copper busbar conductors meet design requirements, with smooth surfaces free of cracks or impurities. Connections are securely fixed, overlapping smoothly with circuit breaker or switch terminals, and the physical contact surfaces are symmetrical.

Busbar installation strictly follows the established procedures. The cross-sectional area and width-to-thickness ratio of the copper busbars are matched to the design current-carrying capacity standards. The copper busbar surfaces are cleaned, ensuring no oxide layer or burrs on the overlapping surfaces, and the connections are tight. The copper busbar routing is neat, with the longitudinal and transverse arrangement conforming to the cabinet structure requirements and the layout is reasonable.

Electrical connections are stable and reliable. After connection, the copper busbars are tightened, with overlapping bolts or connectors installed correctly, and contact points are appropriate, without looseness, misalignment, or poor contact. Necessary contact resistance tests and operational temperature rise checks were performed before the cabinet was put into use, and the results show that the contact surface temperature rise is within the expected range.