| Main technical parameters | ||
| Item | Technical parameter | |
| Rated voltage (kV) | 40.5 | |
| Rated frequency (Hz) | 50 | |
| Rated current (A) | 630、1250、1600、2000、2500、3150 | |
| Rated insulation level | 1min power frequency withstand voltage (RMS) (kV) | 95 (Interphase, opposite) 118 (Between fractures) |
| Lighting impulse withstand voltage (Peak) (kV) | 185 (Interphase, opposite) 215 (Between fractures) | |
| Rated short-circuit breaking current (kA) | 25、31.5、40 | |
| Rated short-circuit making current (peak value) (kA) | 63、80、100 | |
| Rated short-time withstand current (4s RMS) (kA) | 25、31.5、40 | |
| Rated peak withstand current (kA) | 63、80、100 | |
| Rated short-circuit breaking current number of breaks (kA) | 50 | |
| Protection grade | Enclosure IP4X, compartment, circuit breaker room door open IP2X | |
