Item

Unit

       data

            Rated voltage

KV

12

Rated insulation level

1minRated short-time power frequency withstand voltage

KV

42 (alternate with, relatively),48 (fracture)

Rated lightning impulse withstand voltage peak

KV

75 (alternate with, relatively),85 (fracture)

Rated frequency

HZ

50

Main busbar rated current

A

1250,1600,2000,2500,3150

Branch bus current rating

A 

630,1250,1600,2000,2500,3150

4S(3S)*Thermal stability of current (RMS)

KA

12,20,25,31.5,40

Rated dynamic current (peak)

KA

40,50,63,80,100

Internal arc fault effect experiment(0.8S)

KA

20(circuit breaker room, cable chamber)

Protection level

Shell IP4X circuit breaker room door open IP2X