What is a high and low voltage switchgear? What’s the role?
What is a high and low voltage switchgear? High-and low-voltage switchgear is a high-voltage distribution assembly that assembles primary and secondary equipment according to a certain wiring scheme, and is used to cut and protect electromechanical, power transformers and high-voltage lines in power plants and substations. Among them, there are high-voltage switchgear, protective appliances, inspection and measuring instruments, buses, insulators, etc. There are two types of high-voltage switchgear: fixed switchgear and handbrake switchgear, which are generally used in substations of small and medium-sized factories. Adopt a relatively economical fixed high-voltage cabinet. Trolley switchgear is unique in that primary equipment such as high-voltage circuit breakers are installed on pushable trolleys. When checking and repairing equipment, push the same type of trolleys at any time, which can restore power and check the convenience and safety of maintenance. The advantage is that the power outage time can be greatly reduced, but the price is very high.
High voltage switchgear
As the name implies, high and low voltage switchgear is the power distribution equipment of power supply system, which is used for power distribution, control, measurement and wiring. Generally, high-voltage switchgear is used in power supply bureau and substation, which leads to low-voltage distribution cabinet through transformer voltage drop. The low-voltage distribution cabinet is located in each electrical distribution board, control box and switch box. Some switches, circuit breakers, fuses.
High and low voltage switchgear can be used as power control, conversion and distribution equipment, such as power distribution center, motor control center, capacity compensation and terminal power distribution. High and low voltage switchgear is suitable for power stations. Substation, industrial and mining enterprises, civil building infrastructure and other fields.
KYN28 high-voltage switchgear
What is the function of high and low voltage switchgear?
Product characteristics of high and low voltage switchgear:
A. Modular structure conforming to standards, practices and requirements
B. Modular system, standardized components, rapid manufacturing and easy modification
C. Functional design, rational size and internal layout, reduction of occupied space, simple connection of main circuit and auxiliary circuit, simple installation and control of upgrade cost.
D strengthen the protection of personal and equipment safety with a high level of reliability and safety.
Technical parameters of high and low voltage switchgear:
Rated isolation voltage: 1000V (AC)
Rated working voltage: 690V (AC)
Rated impact voltage: 12KV
Overpressure category: IV
Rated current of main bus: 6300 A.
Rated short-term withstand current: 100 kcal
Differentiation type: 1/2b/3b/4
Protection level: IP30/31/40/42/55
Functional unit type: fixed, selected