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Shenzhen Electric Technology Co., Ltd.
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High pressure ring cabinet, box change basics worth learning!
Edit:Shenzhen Electric Technology Co., Ltd.   PublicDate:2019-03-17

High pressure ring mesh cabinetsIs the Ring network distribution network, that is, the power supply trunk to form a closed ring. The power supply is powered by a high-voltage switch from the trunk all the time to the annular trunk. The advantage of this is that each distribution branch can get power from its left trunk and right trunk. Although the total power supply is a single-loop power supply, but from each distribution branch, it has the advantage of similar to the dual-loop power supply, thus improving the reliability of the power supply.

 

"Ring Cabinet" means that each distribution branch has a switchgear (outlet switchgear). The Busbar of the switchgear is also part of the annular trunk line. In other words, the ring trunk is made up of the busbar of each outlet cabinet. Each outlet cabinet is called a "ring cabinet". In fact, simply taking out a ring cabinet will not see the meaning of "ring network".

Switchgear is divided into two types of high pressure and low pressure. High pressure has ring cabinets, middle cabinets, GG1A and so on.

 

There is a wide variety of ring cabinets. The ring cabinet has a small capacity. Therefore, the high voltage switch of the ring cabinet generally uses the high voltage load switch with high voltage fuse instead of the complex circuit breaker. The load switch is used to control the normal current in the ring cabinet and the fuse is used to cut off the short-circuit current. The combination of the two replaces the circuit breaker. At present, "ring cabinet" refers to the load switch as the main switch of high-voltage switchgear.