Derating Of Electrical Data - Bosch Rexroth EFC 3600 Operating Instructions Manual

DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
10.3

Derating of Electrical Data

10.3.1 Derating and Ambient Temperature
The ambient temperature for EFC 3600 is -10 ~ 50 ℃.
● If the ambient temperature is within this range, there will be no need for derating.
● If the ambient temperature is out of this range, there will be no possibility to install
and run the frequency converter, even the performance data have been additionally
reduced.
For a single phase 2.2 kW model, 10 % of load needs to be reduced for
every 5 ℃ temperature increase when the frequency converter is working
at 40 ~ 50 ℃.
10.3.2 Derating and Mains Voltage
Reduced over current based on mains voltage
The EFC 3600 frequency converters are thermally dimensioned for the rated currents.
This rated current is available with the specified rated voltage. With deviating voltages
in the permissible range, please pay attention to the following:
● U <U : With mains voltages below the rated voltage, no higher currents may
mains rated
be withdrawn to ensure that the dissipated power remains current.
● U >U : With mains voltages greater than the rated voltage, a reduction of the
mains rated
permissible output permanent currents takes place to compensate for the increased
switching losses.
Fig.10-1: Derating and mains voltage
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Technical Data
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