Electrical knowledge

Selective protection, also known as graded protection, refers to the coordination of protection characteristics between upper and lower level electrical appliances in a system. When an overcurrent fault occurs at a certain point, the circuit breaker or fuse designated to operate within this r...

Dry transformation is more expensive than oil in terms of price. In terms of capacity, a large amount of oil becomes more dry than dry. Dry transformation is required in comprehensive buildings (basements, floors, rooftops, etc.) and densely populated areas. The oil transformer is installed i...

SUBSTATION Definition: A substation is a facility designed to transform voltage levels. To transmit the electrical power generated by power plants to distant locations, the voltage must be increased to high voltage. Upon reaching the vicinity of users...

1、 General requirements for high-voltage circuit breakers 1. The circuit breaker should operate within the specified technical parameters. 2. Circuit breakers must be equipped with reliable operating and closing power sources. 3. Power transmission ...

1. Switch refusal to close and refuse to open When the opening and closing command is issued, the circuit breaker refuses to operate. The main reasons are: Poor conversion of auxiliary switches The lead wire of the electromagnet coil is disconnected or ...

A box-type substation (referred to as a box substation) typically consists of a high-voltage room, a transformer room, and a low-voltage room. These components are organically integrated with functions such as high-voltage power reception, transformer voltage reduction, and low-voltage power di...