High and low voltage complete sets of equipment are: metal-enclosed switchgear (switchgear), gas-insulated metal-enclosed switchgear (GIS) and high-voltage/low-voltage pre-assembled substations, low-voltage switchgear, switchboards, control boxes, switch boxes and other electrical equipment.
1, high-voltage complete sets of equipment according to its different functions and roles, can be divided into:
(1) components and their combinations: including circuit breakers, disconnecting switches, grounding switches, reclosers, breakers, load switches, contactors, fuses, and the above combination of components of the load switch-fuse combination of electrical appliances, contactors - fuse (F-C) combination of electrical appliances, disconnecting load switch, fuse-type switches, disconnecting load switch, fuse-type switches, and the above combination of components. switches, fuse-type switches, open-type combination appliances and so on.
(2) complete sets of equipment: the above components and their combination with other electrical products (such as transformers, current transformers, voltage transformers, capacitors, reactors, surge arresters, busbars, inlet and outlet bushings, cable terminals and secondary components, etc.) for a reasonable configuration, organically assembled in a metal-enclosed enclosure, with a relatively complete use of the product function. Such as metal-enclosed switchgear (switchgear), gas-insulated metal-enclosed switchgear (GIS) and high-voltage/low-voltage pre-assembled substations.
2, low-voltage complete sets of equipment including low-voltage switchgear, switchboards, control boxes, switch boxes and other electrical equipment.
Expanded Information
High and low voltage complete sets of equipment are mainly used for the control and protection of the power system (including power plants, substations, transmission and distribution lines and industrial and mining enterprises and other users), which can be used to put a part of the power equipment or lines into or out of operation according to the needs of the grid operation, and also can be used to quickly remove the faulty part from the grid in the case of the faulty power equipment or lines. Part of the power grid from the rapid removal, so as to ensure the normal operation of the grid in the normal operation of the part of the fault-free and equipment, operation and maintenance personnel safety.
High and low voltage complete sets of equipment are widely used in power plants in the low-voltage system of power distribution, electrical transmission and automatic control equipment. As we all know, power generation itself consumes a lot of energy (refers to the plant electricity), according to statistics, of which low-voltage electrical energy consumption accounts for more than half of the total energy consumption of power plants. In recent years, with the adoption of large-scale complete sets of equipment and automatic control, automatic regulation system, the use of low-voltage electrical appliances increased substantially.
Therefore, high and low voltage equipment is very important transmission and distribution equipment, its safe and reliable operation of the power system for safe and effective operation is of great significance.
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