Contact box detection device for high voltage switchgear

Abstract

The invention discloses a contact box detection device for a high-voltage switch cabinet, which includes a contact box body arranged inside the switch cabinet, and the contact box body is provided with a device for detecting the temperature and humidity of the contact box during its operation inside the switch cabinet. And prevent the temperature and humidity detection and exhaust device from condensing inside the contact box body. The contact box detection device for this high-voltage switchgear is installed on the temperature and humidity detection and exhaust device at the connection between the static contact and the plum blossom contact. Therefore, on the one hand, the temperature and humidity inside the contact box body can be stably detected, and at the same time, the temperature and humidity outside the contact box body can be detected, that is, the temperature and humidity inside the switch cabinet, so as to realize the temperature and humidity inside the contact box body. The heat or moisture is discharged in time, and the inside of the switch cabinet is guaranteed to be a dry environment. At the same time, the temperature and humidity inside the contact box body and the switch cabinet are balanced to effectively improve the safety performance and safety of the contact box body in the process of using the switch cabinet. service life.

Description

technical field [0001] The invention relates to the technical field of high-voltage switch cabinets, in particular to a contact box detection device for high-voltage switch cabinets. Background technique [0002] The contact box is an important part of the power distribution switchgear and is used to install the static contacts. It generally includes a box body, which is usually located in the busbar room on one side of the partition, and is installed on the partition board in the cabinet of the power distribution switchgear, and the box body is connected with the handcart room, and the static contact is fixed in the box body, so that Connect or disconnect with the plum blossom contact of the circuit breaker in the handcart room. [0003] At present, most of the existing switchgear contact boxes have a cylindrical structure. During the long-term use process, that is, when the static contact and the plum contact are in a connected state, the internal contact box often occurs...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the existing switchgear contact boxes have a cylindrical structure. During the long-term use process, that is, when the static contact and the plum contact are in a connected state, the internal contact box often occurs. More heat cannot be dissipated in time, resulting in poor heat dissipation inside the contact box. At this time, if the temperature difference between the inner cavity of the contact box and the outside is large, and the switchgear is used in a humid environment , it will cause condensation inside the contact box, which will easily lead to corona discharge inside the contact box, and severe partial discharge. When the partial discharge is serious, the contact box will be broken down for a long time, resulting in The damage of the contact box may even lead to safety hazards such as power failure and fire in the switchgear

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