Cooling Circuits For Stainless Steel Heatsinks - Siemens SINAMICS S120 Equipment Manual

8.1.2

Cooling circuits for stainless steel heatsinks

To ensure an optimum heatsink service life, please note the following recommendation for
stainless steel heatsinks (Power Modules FL and GL, Motor Modules GXL):
• Open or semi-open cooling circuit made of stainless steel or ABS which transfers heat to
• Cooling circuit pipes, fittings made of ABS, stainless steel (Nirosta) or common steel
grey cast iron
>3 m
Dirt trap,
≤ 100 µm
Fig. 8-2 Recommendations for an open cooling circuit
Chassis Power Units Liquid Cooled
SINAMICS S120 Equipment Manual, Edition 04/2007, 6SL3097-2AM00-0BP2
a recooling system via a water-to-water heat exchanger.
(ST37).
Unit 1,
Pump,
stainless
steel
heatsink
P
Cooling circuit and coolant properties
Motor,
stainless steel or
equivalent corrosion-
proof or corrosion-
protected metals
Hose
8.1 Cooling circuits
8-5