Secondary box body

Abstract

The invention relates to the technical field of power systems, and discloses a secondary box body, which comprises a box body and internal components. The box body comprises a main frame, a front door, a rear door, a box top cover and a box body support. One sides of the front and rear doors are connected with the main frame. The main frame is provided with an opening and a diversion trench surrounding the opening. Drainage holes are formed in the bottom of the front door and the bottom of the rear door. The box body further comprises sealing strips, sealing grooves are formed in the inner side walls of the front door and the rear door, and one ends of the sealing strips are clamped in the sealing grooves. One surface of the diversion trench away from the main frame extends to form a sealing surface. When the front door is attached to the main frame, the other end of the sealing strip is connected to the sealing face in a pressed mode. The box top cover is designed into an inclined shape with a low front part and a high rear part. The box body support is provided with a cable inlet through which a cable passes, and the side wall is provided with a ventilation fence. Internal components adopt modular design, and an intelligent monitoring device is added. The secondary box body has good waterproof, high-humidity-proof, windproof, high-reliability and intelligent effects, and theoperation reliability is improved.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a secondary box. Background technique [0002] The circuit breaker is the safety guard of the power system. It has the ability to carry normal working current for a long time, carry short-circuit current for a short time, and break the normal and fault current, which plays a very important role in the reliable operation of the power grid. Once the circuit breaker fails, it will bring very serious consequences to the system; at the least, it will cause damage to the lines and equipment protected by the switchgear, and at the worst, it will cause large-scale power outages for users, affecting the development of the national economy and people's normal life. [0003] At present, the main substation equipment mechanism box, terminal box, HSBC cabinet (collectively referred to as the secondary box (cabinet) body) and secondary components are the main functional components for th...

AI Technical Summary

Problems solved by technology

However, since the secondary box (cabinet) is usually placed outdoors, it has been subjected to high temperature, high humidity, salt spray, wind, rain and other environmental conditions for a long time, which makes the secondary box prone to rainwater leakage, resulting in secondary box There are many defects or faults in the body of the cabinet, and the service life is short, which affects the safety of power supply, so it brings great hidden dangers to the safety of the power grid.

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