Type | DDS-12M | DDS-27M | DDS-36M | ||||
---|---|---|---|---|---|---|---|
Rated Current | Ir | 630 A | 1250 A | 630 A | 1250 A | 630 A | 1250 A |
Rated Voltage | Ur | 12 kV | 27 kV | 36 kV | |||
Rated Frequency | Fr | 60 Hz (50 Hz) | 60 Hz (50 Hz) | 60 Hz (50 Hz) | |||
Rated Short Time Current | Ik | 25 kA | 25 kA | 25 kA | |||
Duration of Short-Time Circuit | tk | 3 s | 3 s | 3 s | |||
Impulse Withstand Voltage | Up | ||||||
- Across Isolating Distance | 75 kV | 150 kV | 195 kV | ||||
- To Earth Between Poles | 75 kV | 150 kV | 170 kV | ||||
Power Frequency Withstand | Ud | ||||||
- Across Isolating Distance | 28 kV | 60 kV | 80 kV | ||||
- To Earth Between Poles | 28 kV | 60 kV | 70 kV | ||||
Mechanical Life | M2 (M3) | M2 (M3) | M2 (M3) |