Common electrical components for high and low voltage switchgear

Common electrical components of high and low voltage switchgear:

Commonly used primary electrical components (main circuit equipment) in the cabinet include the following equipment:

1. Current transformer, referred to as CT

2. Voltage transformer, referred to as PT

3. Grounding switch

4. Lightning arrester (resistance-capacitance absorber)

5. Isolating switch

6. High voltage circuit breaker

7. High voltage contactor

8. High voltage fuse

9. Transformer

10. High voltage live display

11. Insulation

12. Main bus and branch bus;

13. High voltage reactor

14. Load switch

15. High-voltage single-phase parallel capacitors, etc.

The main secondary components commonly used in the cabinet (also called secondary equipment or auxiliary equipment, refers to the low-voltage equipment that monitors, controls, measures, adjusts and protects the primary equipment)

Common equipment is as follows:

Relays, watt-hour meters, ammeters, voltmeters, power meters, power factor meters, frequency meters, fuses, air switches, transfer switches, signal lights, resistors, buttons, microcomputer integrated protection devices, etc.