SIEMENS
SINAMICS G180
Configuring instructions
Characteristic curves
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Siemens D 18.1 · 2014
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Overview
(continued)
Overload capability
The SINAMICS G180 converters have an overload reserve of
typically about 110 % to deal with breakaway torques, for
example. The overload period of the potential short-time current
is regulated automatically (thermal converter model), but is at
least 60 s at 40 °C on condition that the converter is operated at
its rated current prior to and following the period of overload.
This calculation is based on a duty cycle duration of 600 s.
If larger surge loads occur, this must be taken into account when
configuring. It may be necessary to select a converter in the
next-higher rating class.
Overload capability of SINAMICS G180
Short-time current
(typically approx. 110 %)
Rated current
G_D024_EN_00009
60 s
600 s
I
short
I
N
Converter current
t
© Siemens AG 2014