Derating Factors; Derating Factors As A Function Of Coolant Temperature - Siemens SINAMICS S120 Equipment Manual

Motor Modules
6.6 Technical specifications
High overload for 6SL3325–1TG41–3AA7 and 6SL3325–1TG41–6AA7 Motor Modules
The base load current for a high overload I
130 % for 10 s.
Figure 6-16
6.6.2

Derating factors

6.6.2.1

Derating factors as a function of coolant temperature

Water cooled SINAMICS S120 devices are suitable for water or a mixture of water and an
antifreeze as coolant, corresponding to Section Antifreeze + biocide (Page 262).
When water is used as a coolant, the units can supply 100% output current at temperatures
between 5 °C and 38 °C. The maximum output current decreases linearly to 90% at
temperatures between 38 °C and 43 °C.
When water and an antifreeze mixture described above is used as a coolant, the units can
supply 100% output current at temperatures between 0 °C and 38 °C. The maximum output
current decreases linearly to 90% at temperatures between 38 °C and 43 °C.
170
High overload for 6SL3325–1TG41–3AA7 and 6SL3325–1TG41–6AA7 Motor Modules
is based on a duty cycle of 130 % for 60 s or
H
Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0