Equipment classification: power primary equipment:
Equipment directly involved in the production, conversion, transmission, distribution and consumption of electric energy is called electrical primary equipment, which mainly includes:
Equipment used for electric energy production and conversion, such as generators, motors, transformers, etc. ;
Switching devices used to connect and disconnect circuits, such as circuit breakers, disconnectors, contactors, fuses, etc.
Current-carrying conductor and gas insulation equipment. Such as bus, power cable, insulator, wall bushing, etc.
Devices to limit overcurrent or overvoltage, such as current limiting reactors and lightning arresters.
Transformer equipment: reduce the high voltage and high current in the primary circuit for use by measuring instruments and relay protection devices, such as voltage transformers and current transformers.
Power secondary equipment: In order to protect and ensure the normal operation of electrical primary equipment, the equipment that measures, monitors, controls and adjusts its operation state is called electrical secondary equipment. There are all kinds of measuring instruments, all kinds of relay protection and automatic devices, DC power supply equipment and so on.