Treatment methods for overheating of cable distribution boxes

A cable Distribution Box is a device used to perform splicing, branching, connection and circuit conversion on various cable lines. It is mostly used outdoors. After long-term use, the cable distribution box will heat up. Let's take a look at the reasons for the heating of the cable distribution box and the treatment methods.

Reasons for the heating of the cable distribution box:
The cable distribution box has been in operation for a long time, and the equipment tends to age. The characteristics of the static contact finger clamping spring deteriorate. It may also be that the static contact finger is in one-sided contact, and the clamping spring of the contact is loose and deformed, resulting in insufficient clamping force and some contact fingers not contacting the moving contact. During the peak summer load period, it generates frequent heat. This leads to a reduction in the contact surface between the touch finger and the moving contact, the accumulation of dirt on the moving and static contacts, and the excessive oxidation and rusting of the material after long-term operation, resulting in an increase in contact resistance and obvious burn pits on the touch finger. The closing is not in place or the scissor-type clamp structure has poor clamping. There is a deviation in the closing Angle, resulting in insufficient contact surface. The connecting bolts are not tightened enough or are over-tightened, causing the bolts to break. It has been in a stable and high-load state all year round.

Treatment of overheating in cable distribution boxes:
The adoption of the rotating or penetrating contact structure with two-step movement of the moving contact will improve the product quality. Users should enhance protection and adhere to infrared monitoring, which is an effective way to reduce and detect heating faults in the conductive circuit. The operation part should also continuously summarize experiences. It is hoped that through the joint efforts of the manufacturer and the user, the product quality and operation level of domestic cable distribution boxes can be improved. Conduct temperature monitoring and determine whether it is necessary to request the dispatcher to change the operation method or reduce the load based on the heat generation temperature and its development rate. Modify the method of operation. Maintenance: The maintenance of a barrier switch usually involves replacing the spring clamp of the static contact and the burned contact fingers, removing the oxide layer of the dynamic contact, cleaning the dynamic contact, applying conductive adhesive, and tightening the bolts. The method is to replace the static contact.