| Rated System Voltage | 12kV, three-phase 50Hz/60Hz |
| Rated Busbar Current | 630A |
| Rated Short-circuit Breaking Current | 20kA |
| Short-time Thermal Stability Current / Duration | 20kA / 4s |
| Peak Dynamic Stability Current | 50kA |
| Power-frequency Withstand Voltage (phase-to-phase / to ground) | 42kV; isolating gap 48kV |
| Lightning Impulse Withstand Voltage | 75kV; isolating gap 85kV |
| Insulating Medium | High-purity dry air / nitrogen |
| Gas Compartment Operating Pressure (at 20℃) | 0.02~0.04MPa (slightly positive pressure) |
| Gas Compartment Annual Leakage Rate | ≤0.05% |
| Degree of Protection | Gas compartment IP67, enclosure IP42 |
| Mechanical Endurance | Circuit breaker ≥10000 operations; disconnector ≥3000 operations; earthing switch ≥2000 operations |
| Standard Enclosure Dimensions | Single cabinet 600(W)×800(D)×2000(H), three cabinets side-by-side as integrated unit |
| Standard Primary Components | 2 vacuum circuit breakers + three-position disconnecting/earthing switch, PT (voltage transformer), HV fuse, arrester, live indicator, pressure gauge, explosion-proof pressure relief, mechanical five-protection interlock |
