The core unit of this product includes a straight-acting load switch and vacuum circuit breaker. All primary live parts are sealed in a stainless steel gas tank filled with SF6, isolated from the outside and unaffected by environmental factors. The gas tank is installed on the base of the cable compartment made of aluminum-zinc plate, with the operating mechanism interlocked with the door panel. Metal materials account for over 90%, improving power supply reliability and personal safety, and complying with relevant international standards.
1. Rated voltage: 40.5kV;
2. Rated current: 630A;
3. Rated short-time withstand current: 20kA/4s (Type C), 25kA/4s (Type V);
4. Rated short-circuit making current (peak): 50kA (Type C), 63.8kA (Type V);
5. 1min power frequency withstand voltage: 95kV (standard value), 118kV (across insulation distance);
6. Lightning impulse withstand voltage: 185kV (standard value), 215kV (across insulation distance);
7. Annual leakage rate: <0.01%/year;
8. Protection class: IP68 (core unit), IP4X (operating mechanism room/cable room);
9. Mechanical life: 5000 operations for load switch (Type C), 10000 operations for circuit breaker (Type V);
10. Equipment dimensions: 500mm (width) × 960mm (depth) × 2200mm (height)
1. Core structure: SF6-filled stainless steel gas tank, busbar connection bushing, operating mechanism, secondary instrument box;
2. Functional units: Load switch (Type C), vacuum circuit breaker (Type V), load switch-fuse combination (Type F);
3. Interlocking design: Mechanical interlocking to ensure reliable opening/closing sequence;
4. Modular design: Supports free combination of multiple units with flexible expansion;
5. Sealing protection: Welded and sealed inflatable compartment with independent pressure relief channel.
1. Onshore/offshore wind farms;
2. Medium and large photovoltaic power stations;
3. Small medium-voltage substations;
4. Industrial enterprise power distribution;
5. Airports, ports, rail transit;
6. Municipal engineering, commercial complexes
