EHV Dead Tank SF6 Circuit Breakers
Salient Features :
- Improved puffer type interrupter
- Reduced operating mechanism energy requirement
- Rotary seals
- Higher reliability, safety and simplicity of design
- Minimum maintenance, servicing and installation time
- Compact and reliable hydro-spring mechanism
- Higher seismic stability (low center of gravity)
- Totally earthed tank - higher safety
- Conform to class M2 & C2
Technical Parameters :
Description |
245 kV Live Tank SF6 Circuit Breaker |
420 kV Live Tank SF6 Circuit Breaker |
Number of breaks / phase
Type of operation
Operating mechanism
Rated Voltage
Rated normal current
Rated frequency
1 min. power frequency withstand voltage
Switching impulse withstand voltage
Lighting impulse withstand voltage
Rated short circuit breaking capacity
First Pole to clear factor
Operating duty
Peak short circuit withstand
Current
Total break time |
1
3 pole gang operated
Hydro – Spring
245 kV rms
2500 A
50 Hz
460 kV rms
Not Applicable
1050 kV peak
40 kA rms
1.3
O-0.3sec-CO-3min-CO
100 kA peak
60 ms |
1
3 pole gang operated
Hydro – Spring
420 kV rms
3150 A
50 Hz
520 kV rms
1050 kV peak
1425 kV peak
50 kA rms
1.3
O-0.3sec-CO-3min-CO
125 kA peak
60 ms |
|
Product Range