Main technical data

rated voltage 

40.5kV   

rated current 

1600/2000A

rated frequency

50Hz

rated short-time power frequency withstand voltage  

95kV

rated lightring impulse withstand voltage 

185kV

rated short-circuit breaking current   

20/25KA

rated short-circuit making current         

50/63KA

rated operations of short-circuit breaking current interruption 

20 times

rated single capacitor bank breaking current

 630A   

rated short-time withstand current 

20/25kA   

rated peak withstand current 

50/63kA

rated duration of short-circuit 

4s

mechanical life 

10000times            

contact closing force due to bellows and atmosphere 

250±50N  

counterforce at rated contact stroke 

330±60N

circuit resistance at rated contact force  

≤25μΩ

shelf life        

20years

contact erosion limit                   

3mm

weight of moving parts                  

≤4kg

      mechanical data required for matched vacuum interrupter

rated contact stroke 

 22±2mm

average opening speed                          

1.6±0.2m/

average closing speed  

0.75±0.2m/s

added contact force  

3100±200N

contact bouncing  duration at closing operation

≤2ms

contact bouncing bank amplitude of opening operation  

≤4mm

three-pole simultaneity  

≤2ms