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IEEE Std C37.09a (Circuit-Breaker)

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nr VoltageNormal currentShort-circuit currentFreq
uency
Closing mechanismArc exting-
uishing medium
Designation Owner Certificate number Cert. type Contents Remarks
# [kV] [A] [kA] [Hz]          Help Help  
138 1250 104 50/60 Stored energy closing (springs)  VD4X 3812-40 ABB-DERA2456-15 130 74567