Connection
29
TGH1361en/11.2009
In case of current-controlled intermediate circuits of frequency converters,
higher DC voltages are to be expected.
The given voltage values for AC/DC systems take into account values found
by previous experience (factor 1.414 between DC voltage and AC voltage).
The maximum DC voltage in case of insulation faults in the DC part of the
IT system, for example converter intermediate circuit, is DC 1840 V. From
this, the maximum nominal AC voltage is calculated:
U
max
= DC 1840 V / 1.414 = AC 1300 V
To Next Page
Loading...
