Cooling Circuit For Aluminum Heatsink - Siemens SINAMICS S120 Equipment Manual

8.1.1

Cooling circuit for aluminum heatsink

To ensure an optimum heatsink service life, please note the following recommendation for
aluminum heatsinks (Basic Line Modules FBL and GBL, Motor Modules HXL and JXL):
• Closed cooling circuit made of stainless steel or ABS which transfers heat to a recooling
• Cooling circuit pipes, fittings made of ABS, stainless steel (Nirosta) or common steel
Pressure-relief
valve
Closed
pressurizer
Pump, gray
cast iron
Controller
Bypass
valve
optional
Inspection glass
Dirt trap,
≤ 100 µm
T secondary
Fig. 8-1 Recommendations for a closed cooling circuit
Chassis Power Units Liquid Cooled
SINAMICS S120 Equipment Manual, Edition 04/2007, 6SL3097-2AM00-0BP2
system via a water-to-water heat exchanger.
(ST37).
Device 1,
aluminium or
stainless
steel heat
sink
P
T primary
inlet
Heat exchanger,
copper
Cooling circuit and coolant properties
Motor,
aluminium
and gray
cast iron
Hose
8.1 Cooling circuits
T primary
return
8-3