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The role, significance and classification of high voltage switchgear

Source:wenhui  Date:2020-07-23 16:50

The role, significance and classification of high voltage switchgear

 

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High-voltage switchgear is mainly used for the control and protection of power systems (including power plants, substations, transmission and distribution lines, and industrial and mining enterprises). Not only can some power equipment or lines be put into or out of operation according to the needs of grid operation, but also in When the power equipment or line fails, the fault part is quickly removed from the power grid, so as to ensure the normal operation of the invincible fault part of the power grid and the safety of equipment and operation and maintenance personnel.

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     Therefore, high-voltage switchgear is a very important transmission and distribution equipment, and its safe and reliable operation is of great significance to the safe and effective operation of the power system.

(1) Components and their combinations:

Including circuit breakers, disconnectors, grounding switches, reclosers, sectioners, load switches, contactors, fuses, load switch + fuse combination appliances, contactor + fuse (FC) combination appliances, isolation load switches, fuse Switch, open combination electric appliance, etc.

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(2) Complete equipment:

The above components and their combinations are reasonably configured with other electrical products (such as transformers, transformers, capacitors, reactors, surge arresters and secondary components, etc.), organically combined in metal enclosed enclosures, and have relatively complete functions. Such as metal-enclosed switchgear (switchgear), gas-insulated metal-enclosed switchgear (GIS), high-voltage/low-voltage prefabricated substations, etc.

All product pictures existing in this catalog are representative and may not have exactly the same appearance and features with the machines to be produced later. Machine appearances and features are subject to change without any prenotification.