High-voltage complete equipment (high-voltage distribution cabinet) refers to indoor and outdoor AC switchgear operating in power systems with voltages of 3kV and above and frequencies of 50Hz and below. Mainly used for the control and protection of power systems (including power plants, substations, transmission and distribution lines, industrial and mining enterprises, etc.) When the line fails, the faulty part is quickly removed from the power grid, so as to ensure the normal operation of the fault-free part of the power grid and the safety of equipment and operation and maintenance personnel. Therefore, high-voltage complete equipment is a very important power transmission and distribution equipment, and its safe and reliable operation is of great significance to the safe and effective operation of the power system.
High-voltage complete sets of equipment can be divided into:
(1) Components and their combinations: including circuit breakers, isolating switches, earthing switches, reclosers, circuit breakers, load switches, contactors, fuses and the above components Combined load switch-fuse combination, contactor-fuse (FC) combination, isolating load switch, fuse switch, open combination, etc.
(2) Complete sets of equipment: combine the above components and their combinations with other electrical products (such as transformers, current transformers, voltage transformers, capacitors, reactors, arresters, bus bars, inlet and outlet bushings, cable terminals and secondary components, etc.) Reasonable configuration, organically combined in a metal closed shell, and a product with relatively complete use functions. Such as metal-enclosed switchgear (switchgear), gas-insulated metal-enclosed switchgear (GIS), and high-voltage/low-voltage prefabricated substations.
Post time: Sep-30-2022