Rated voltage: 12 kV
Rated frequency: 50 Hz
Rated current: 1250 A

Insulation level – Rated short-time power frequency withstand voltage (1min), Ground and phase-to-phase: 42 kV
Insulation level – Rated short-time power frequency withstand voltage (1min), Fracture gap: 48 kV
Insulation level – Rated Lightning impulse Withstand Voltage, Ground and phase-to-phase: 75 kV
Insulation level – Rated Lightning impulse Withstand Voltage, Fracture gap: 85 kV
Insulation level – Short-duration power frequency withstand voltage of auxiliary and control circuits: 2 kV
Power frequency withstand voltage test under zero gauge pressure: 9kV/5min
Partial discharge: ≤5 pC
Rated short-circuit breaking current: 31.5 kA
Rated short-circuit making current (peak value): 80 kA
Rated out-of-step breaking current: 7.9 kA
Rated peak withstand current: 80 kA
Rated short-time withstand current: 31.5 kA
Rated short-circuit duration: 4 s
Rated breaking current of back-to-back capacitor bank: 1250 A
Rated cable charging breaking current: 25 A
Initial polar coefficient: 1.5
Rated operation sequence: 0-0.3s-CO-180s-CO

SF₆ gas pressure (20℃Cab): Rated pressure 0.35 MPa
SF₆ gas pressure (20℃Cab): Minimum pressure 0.28 MPa
Gas moisture content: ≤150 μL/L
Annual leakage rate: ≤0.1 %
Electrical life: 30 times
Mechanical life: 20000 times