Lower isolation belt grounding knife-switch fixed high-voltage ring main unit structure

Abstract

The utility model relates to a lower isolation belt grounding knife-switch fixed high-voltage ring main unit structure. The lower isolation belt grounding knife-switch fixed high-voltage ring main unit structure comprises a high-voltage ring main unit main body, a supporting plate, first mounting components, a second mounting component, a first cabinet door, a second cabinet door, hinges, an operating mechanism and a third cabinet door, the supporting plate is welded and fixed to the inner wall of the middle of one side of one high-voltage ring main unit body, the first mounting components arefixed to the outer walls of the two sides of the supporting plate, the second mounting component is fixed to the inner wall of the other one side of the high-voltage ring main unit body, and the high-voltage ring main unit is provided with a compact circuit breaker. Under the condition that the high-voltage electrical distance is met, compact element structure arrangement is designed, and the occupied area of an electricity room is effectively saved through compression of the cabinet width; when the isolation knife is switched on and off, a visible lower isolation fracture is formed, the operating mechanism achieves fracture switching-on and switching-off operation and achieves mechanical interlocking with the circuit breaker, and the five-prevention requirement is met. The structure efficiently utilizes space, and is reasonable in design layout, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of high-voltage power distribution devices, in particular to a structure of a high-voltage ring network cabinet with ground knife fixed in the lower isolation zone. Background technique [0002] The structure of power distribution equipment is an important part of the machinery industry, and it is an important power transmission and distribution equipment in the power industry. One of them, it can improve the reliability of power supply, so that users can get power from two directions, usually connect the power supply network into a ring, this power supply method is called ring network power supply for short, and AC 10KV power distribution in ports and high-rise buildings In the system, due to the small load capacity, the high-voltage circuit is usually controlled by a load switch or a vacuum contactor, and is equipped with a high-voltage fuse for protection. However, the traditional high-voltage fixed cabin...

AI Technical Summary

Problems solved by technology

[0002] The structure of power distribution equipment is an important part of the machinery industry, and it is an important power transmission and distribution equipment in the power industry. One of them, it can improve the reliability of power supply, so that users can get power from two directions, usually connect the power supply network into a ring, this power supply method is called ring network power supply for short, and AC 10KV power distribution in ports and high-rise buildings In the system, due to the small load capacity, the high-voltage circuit is usually controlled by a load switch or a vacuum contactor, and is equipped with a high-voltage fuse for protection. However, the traditional high-voltage fixed cabinet for power distribution has large switch cabinets, difficult mechanism operation, and complicated maintenance. And many other disadvantages; and with the continuous advancement of science, electrical components have also begun to show the characteristics of intensification, modularization, and miniaturization, so the volume of the equipment must also be increased, the volume needs to be reduced, and the maintenance is not safe and reliable. It is not simple and practical enough to use, so it cannot improve the work efficiency of the staff

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