Uncovering the mystery of auxiliary switches in high-voltage switchgear

The high-voltage switchgear is an indispensable part of the power system, and the auxiliary switch is one of its important auxiliary equipment. So, what role does the auxiliary switch play in the high-voltage switch cabinet?

First of all, the auxiliary switch can realize the operation control of the high-voltage switch cabinet, and its opening and closing status can be used as the operation control signal of the high-voltage switch cabinet. Secondly, the auxiliary switch can also be used for mutual interlocking and position indication functions, that is, to ensure that the high-voltage switch cabinet will not cause power system failure due to misoperation. At the same time, the auxiliary switch also has the function of cutting off the control circuit. Its opening and closing functions of dynamic and static contacts can transmit electronic signals to control the opening and closing of the high-voltage switch cabinet.

So, how to correctly select and maintain auxiliary switches? When selecting an auxiliary switch, priority should be given to its reliability and durability. There are three common auxiliary switches: mechanical, electronic and photoelectric. The specific selection should be based on the actual needs of the site. In order to maintain the normal operation of the auxiliary switch, it should be cleaned and maintained in time to ensure that its contacts are in good contact and move flexibly.

In short, the auxiliary switch in the high-voltage switchgear plays a vital role in the normal operation of the power system. Selecting and maintaining auxiliary switches properly can ensure the stable and safe operation of high-voltage switch cabinets.