Main technical data

rated voltage

12kV

rated current

630A

rated frequency

50Hz

rated short-time power frequency withstand voltage

42kV

rated lightring impulse withstand voltage

75kV

rated short-circuit breaking current

16/20KA

rated short-circuit making current

/40/50kA

rated operations of short-circuit breaking current interruption

30 times

rated single capacitor bank breaking current

400A

rated short-time withstand current

16/20KA

rated peak withstand current

40/50kA

rated duration of short-circuit

4s

mechanical life

10000times

contact closing force due to bellows and atmosphere

70±40N

counterforce at rated contact stroke

120±50N

circuit resistance at rated contact force

≤20μΩ

shelf life

20years

contact erosion limit

3mm

weight of moving parts

≤0.7kg

mechanical data required for matched vacuum interrupter

rated contact stroke

9±1mm

average opening speed

1.0±0.25m/

average closing speed

0.65±0.15m/s

added contact force

1300/1600±100N

contact bouncing duration at closing operation

≤2ms

contact bouncing bank amplitude of opening operation

≤2mm

three-pole simultaneity

≤1ms