How to choose the switch cabinet?
Release time:
2022-03-30
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The switchgear is mainly divided into fixed type and trolley type, and its structure is divided into open type, semi-closed type and closed type. In terms of use environment, there are indoor and outdoor, electromagnetic working mechanism, spring working mechanism and manual working mechanism. So, how should we choose the required switchgear?
Now, let's talk about the considerations for choosing a switchgear. When choosing a switchgear, you should decide whether to choose an indoor or outdoor model according to the use environment, and decide whether to use a fixed or trolley switchgear according to the number and reliability requirements of the switchgear. Switchgear is cheap but not as flexible as the trolley type. For substations with low reliability requirements and a small number of switch cabinets, fixed switch cabinets should be used as much as possible to reduce costs.
The main design of the switchgear should be determined according to the requirements of high wiring rate. For the main design drawings of the switchgear, please refer to the relevant electrical manual. The user needs to select or design the secondary line according to the requirements of control, measurement, protection and signal. After selecting the switch cabinet, check whether the main components in the cabinet are faulty according to the use and short-circuit conditions.
When selecting a switchgear, it should be determined according to the power supply capacity of the substation. If you have a DC power source, try an electromagnetic high voltage switch. The manual operating mechanism used in small substations is relatively simple, but the switching cabinet has a weak cutting capacity.
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