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Date：01-12-2022
I. Overview
HXGN-12 box-type fixed AC metal-enclosed ring network switchgear is suitable for AC 50HZ, 10KV network as breaking load and short circuit and closing short circuit current. The ring network cabinet is equipped with manual and electric spring mechanism to operate the load switch , The grounding switch isolation switch is equipped with a manual operating mechanism.
2. Structure and working principle
This ring network cabinet is based on air as the insulating medium, and is mainly equipped with ZFN-10 vacuum load switch. The main schemes include input cabinet and outlet cabinet.
Inlet cabinet scheme: There is a ZFN-10 vacuum load switch in the main circuit of the cabinet, which is equipped with an isolation knife and a grounding knife as appropriate. The three are installed on a rack and are interlocked with each other. . Therefore, it can realize the operations of connecting the busbar, isolation, and grounding, and the cabinet can also be flexibly assembled with CT, PT and other components.
Outlet cabinet scheme: the main circuit in the cabinet is composed of a ZFN-10 vacuum load switch, a fuse with a striker (with the function of an isolating switch) and a grounding knife. It can also realize three-station operation, and the cabinet can also be flexible. Assemble components such as CT, PT and ZNO arresters. Therefore, the metering cabinet can sometimes be omitted.
The inlet and outlet cabinets are equipped with insulating protective partitions that are interlocked with the grounding switch. The switches in the cabinet are mechanically interlocked with the partitions and the cabinet doors, and meet the requirements of “five preventions”. The protection level of the cabinet shell is IP2X.
