1. By Voltage Level Low-voltage switchgear: AC ≤ 1000V (e.g., GGD, GCK, GCS, MNS) High-voltage switchgear: AC > 1000V (e.g., KYN28, XGN15, GG-1A; 10kV is often classified as medium voltage) 2. By Current Type AC switchgear DC switchgear 3. By Internal Structure Fixed type switchgear Withdrawable (drawout) type switchgear 4. By Function Incoming line panels Outgoing line panels Metering panels Capacitor (compensation) panels Bus-coupler panels 5. By Structural Form Fixed structure Withdrawable structure 6. By Connection Method Welded structure Bolted (fastener) structure
High Voltage Equipment Includes key components such as circuit breakers, disconnectors, earthing switches, load switches, fuses, CTs & VTs, surge arresters, busbars, and cable terminals. These parts can be integrated into systems like metal-enclosed switchgear, GIS, and prefabricated substations. Low Voltage Equipment Includes low-voltage switchgear, distribution boards, control cabinets, and distribution boxes, used for power distribution, control, and protection in LV systems.
1. GGD Fixed Switchgear Advantages: Simple structure, easy maintenance, strong capacity, widely used. Disadvantages: Limited expansion, large footprint, no smart system interface. 2. GCK Withdrawable Switchgear Advantages: Flexible configuration, high safety, good stability, space-saving. Disadvantages: Limited busbar protection, no advanced system integration. 3. GCS Withdrawable Switchgear Advantages: High performance, flexible design, strong reliability, good safety. Disadvantages: Higher cost. 4. MNS Modular Switchgear Advantages: Compact, modular, flexible assembly, international standard design. Disadvantages: Higher cost. 5. MCS Withdrawable Switchgear Advantages: Compact, highly configurable, supports automation and remote control. Disadvantages: High cost.
