11-8 srellortnoC evirD 30EVIRDOCEsnoitcennoC sniaM
Computing charging current inrush
Softstart
N1
INE
R
2*U
=I
∑
= EinGesamtEin II
IEin : charging current inrush of unit in A
I
EinGesamt : total charging current inrush in A (value relevant for fusing)
U
N1: mains input voltage
R
Softstart : softstart resistance of unit (see relevant technical data)
Fig. 11-7: Computing charging current inrush
Note: To compute the charging current inrush take all the units
connected to the mains voltage into account.
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