1. Common primary electrical components (main circuit equipment) in the cabinet are as follows:
1. CT for short for current transformer [such as lzbj 9- 10]?
2. The voltage transformer is referred to as PT[ such as JDZJ- 10]?
3. Grounding switch [such as JN 15- 12]?
4. Lightning arrester (resistance-capacitance absorber) [such as HY5WS single-phase type; Combination of TBP and JBP]?
5. Disconnector [such as GN/KOOC-0/9-/KOOC-0/2, GN30-/KOOC-0/2, GN25-/KOOC-0/2]?
6. High-voltage circuit breaker [for example, oil-deficient type (S), vacuum type (Z), SF6 type (L)]?
7. High voltage contactor [e.g. JCZ3- 10D/400A]?
8. High voltage fuse [such as RN2- 12, XRNP- 12, RN 1- 12]?
9. Transformers [such as SC(L) series dry-type transformers and S series oil transformers]?
10. High voltage charged display [GSN- 10Q]?
1 1. Insulation parts [such as wall bushing, contact box, insulator, insulation heat shrinkable (cold shrinkable) sheath]?
12. Main bus and branch bus?
13. High voltage reactor [such as series type: CKSC and starting motor type: QKSG]?
14. load switch [for example, FN26- 12(L), FN 16- 12(Z)]?
15. High-voltage single-phase shunt capacitor [such as BFF 12-30- 1], etc.
2. The main secondary components commonly used in the cabinet (also known as secondary equipment or auxiliary equipment, which refers to low-voltage equipment for monitoring, controlling, measuring, regulating and protecting primary equipment) generally include the following equipment: relay, watt-hour meter, ammeter, voltmeter, power meter, power factor meter, frequency meter, fuse, air switch and switch.
Replace switches, signal lights, resistors, buttons, microcomputer integrated protection devices, etc.
High-voltage switchgear is used in power generation, transmission, distribution, electric energy conversion and consumption, and plays the role of switching, control or protection. High-voltage switchgear is divided into 3.6kV~550kV electrical products, high-voltage disconnectors and earthing switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switchgear.
The switch cabinet has the functions of overhead incoming and outgoing lines, cable incoming and outgoing lines, bus connection and so on. Mainly used in power plants, substations, petrochemical industry, metallurgical steel rolling, light industry textiles, factories and mines, residential quarters, high-rise buildings and other different fields.