What is a complete set of high and low voltage switchgear? High voltage switchgear refers to indoor and outdoor AC switchgear operating in power systems with voltages above 3kV and frequencies below 50Hz. The complete set of high and low 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). According to the operation needs of the power grid, some power equipment or lines are put into or removed. When the power equipment or lines fail, the complete set of high and low voltage switchgear will promptly cut off the faulty part from the power grid, so that the power grid is fault free. Therefore, high voltage power stations are very important distribution equipment, and their safe and reliable operation is of great significance for the safe and efficient operation of the power system.
Low voltage switchgear refers to a complete set of equipment used at voltage levels below 380V. The latter is considered from a security perspective, but the two are not contradictory. In power generation and distribution systems, low-voltage electrical appliances refer to 380V distribution systems. Therefore, in practical operation, low voltage group refers to electrical equipment used for voltage levels below 380V.
What does the complete set of high and low voltage switchgear include? The complete set of high and low voltage switchgear includes metal enclosed switchgear (switchgear), gas insulated metal enclosed switchgear (GIS), and electrical equipment such as high/low voltage prefabricated substations, low voltage switchgear, distribution boxes, control boxes, and switchgear.
High and low voltage complete sets of switchgear can be divided into the following categories based on their functions and roles: equipment and their combinations, complete sets of equipment, circuit breakers, insulation switches, grounding switches, aggregators, circuit breakers, load switches, contactors, fuses, and load switch fuse modules of these equipment combinations, contactors fuses. The above components and their combinations are reasonably configured with other electrical products (such as transformers, current transformers, transformers, capacitors, reactors, lightning arresters, busbars, incoming conduit, cable terminals, and two-dimensional components), and organically combined in metal enclosed enclosures (such as metal enclosed switchgear (switchgear cabinets), gas insulated metal enclosed switchgear) GIS) High voltage/low voltage backup substations, etc. The complete set of high and low voltage switchgear includes electrical equipment such as low voltage switchgear, distribution panels, control boxes, and switch boxes.