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-time withstand current

16/20 KA

Rated withstand current    

40/50KA

rated short-circuit making current         

40/50KA

rated cloaed-loop breaking current 

630A

rated active load breaking current   

630A

rated cable charging breaking current

10A

rated single capacitor bank breaking current

400A

rated duration of short-circuit 

4s

mechanical life 

10000 times

contact closing force due to bellows and atmosphere 

70±40N 

counterforce at rated contact stroke 

120±50N

circuit resistance at rated contact force  

≤45μΩ

shelf life        

20years

contact erosion limit                   

3mm

weight of moving parts                  

≤0.6kg

  mechanical data required for matched vacuum interrupter

rated contact stroke 

 9±1mm

average opening speed                          

1.0±0.2m/s

average closing speed  

0.65±0.2m/s

added contact force  

700/900±50N

contact bouncing  duration at closing operation

≤2ms

contact bouncing bank amplitude of opening operation  

≤2mm

three-pole simultaneity  

≤1ms