Deformation Assessment Of The Busbar Of The Distribution Cabinet Under Pressure

The busbar of equipment Powbinet may undergo slight deformation under long-term operation or external force. During inspection, attention should be paid to busbar bending, twisting, and abnormal contact surfaces. Dimensional change data of the pressure-bearing area should be obtained using precision measuring tools to provide a reference for subsequent maintenance. The influence of the internal environment of the distribution cabinet on busbar deformation cannot be ignored; high temperature, humidity, and vibration will accelerate material deformation.

Busbar deformation under pressure can be divided into three categories:

• Longitudinal deflection: Slight sagging or bending of the busbar along its length requires recording the deflection value.

• Transverse torsion: Rotational displacement of the busbar cross-section occurs, which can be determined by horizontal measurement.

• Changes in contact surface gap: Changes in the gap between the busbar and the busbar or connecting terminals after pressure may affect the stability of electrical contact.

Inspection Methods and Records

Busbar deformation inspection of the distribution cabinet should use precise measuring instruments, combined with visual inspection to obtain comprehensive data. Power should be disconnected and external loads removed before inspection to ensure safety during the inspection process. The measurement steps include calibrating measurement points, reading dimensional changes point by point, recording data, and plotting deformation curves.

During the recording process, it is recommended to number abnormal areas, distinguish the direction of force and the degree of deformation, and create a traceable data archive. Data analysis can help determine whether the busbar's load-bearing capacity has been affected, providing a basis for subsequent maintenance or replacement. The deformation of each busbar inside the distribution cabinet should be reviewed regularly to facilitate long-term operational monitoring.