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6 Installation instruction
6.1 Mounting position, heat dissipation and derating
According to figure 11 the SIPLUS PSU has to be installed so that a vertical unimpeded flow of the
cooling air at the heat sink on the back side of the equipment is ensured.
Figure 11: Airflow
For thermal optimizing of the incoming air the installation in the lower part of the cabinet is recom-
mended. In this case the equipment is placed close at the air inlet.
The Device is designed to handle a rated current of I = 60 A at ambient temperatures of Ta ≤ 60°C
without getting damaged.
However the ambient temperature is limited depending on the operating current through the feeder
diodes according to Figure 12 to ensure a save operation with a maximum allowed housing surface
temperature as required in the product safety standard EN 60950-1.
Risk to be burnt!
The heat sink and housing parts may be highly heated causing risk of injury in
case of touch.
Before touching the metal parts these have to cool down sufficiently.
SIPLUS PSU Power Supply Unit
Copyright (C) Siemens AG 2018
CAUTION
Figure 12: Derating of ambient temperature
A5E00854207E
V 8.00 released
SIPLUS PSU (6DL3500-8BA)
19 of 30
2018-05-03
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