Cold Plate With An External Liquid Heat Sink; Configuration And Conditions - Siemens SINAMICS S120 Manual

Cabinet design and EMC Booksize
12.10 Information on cold plate cooling
Example: external air heat sink
Figure 12-41 External air heat sink, all data in mm and (inches); height: 500 mm (19.69 inch)
Aluminum air heat sinks are recommended.
The heat sinks and fans must be dimensioned for the power loss to be dissipated. For the
component-specific power loss in rated operation, refer to "Technical data". Appropriately
lower average power losses are obtained in intermittent duty.
The heat sinks and fans are not part of the scope of supply.
Recommended suppliers for heat sinks include:
● Company Alcan company, Singen
● Company Sykatec company, Erlangen
Note
The mounting surface for the heat sink (roughness, evenness) must fulfill the requirements
for the corresponding cold plate component described in the chapter titled "Installation".
12.10.3

Cold plate with an external liquid heat sink

12.10.3.1

Configuration and conditions

When an external liquid heat sink is used, the power sections are all installed on a plate
through which cooling water flows to cool the power units. The size of the liquid heat sink
can be adjusted in line with the size of the drive line-up.
General conditions to be observed
● The maximum temperature within the cabinet is 40 °C (air intake temperature of the
power sections). The maximum temperature inside the cabinet is 55 °C when derating is
taken into consideration.
● The maximum permissible heat-sink temperature is module-dependent. Refer to the
"Technical data" for more information. A temperature sensor in the power unit measures
the temperature and can be read via parameter (see SINAMICS S120/S150 List Manual).
● The customer must take measures to protect the devices against condensation (see Anti-
condensation measures (Page 782)).
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Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8