Rated voltage

kV

12

17,5

24

Dielectric  withstand  voltage  to  earth  and

28

38

50

between  phases  (50  Hz  1  kV min)

Impulse  withstand  voltage  to  earth  and 

75

95

125

between  phases  (50  Hz  1  kV min )

Rated current

A

630

630

630

Breaking capacity of active circuits (cos f 0.7) and

A     

630

630

630

ring circuits at 0.3 A      

Breaking capacity of no-load transformers

A

25

25

25

Brea   Breaking capacity of no-load lines / cables

A

25

25

25

Short time current (1 s) - IMS(*) and earthing switch

kA

12,5÷25

12,5÷25

12,5÷25

Short time current (4 s) - IMS(*)

kA

12,5÷20

-

-

Making capacity - IMS(*) and earthing switch

kA

31,5÷62,5

31,5÷62,5

31,5÷62,5

Internal arc withstand current (0.5 s)

kA

12,5÷16

12,5÷16

12,5÷16