Mechanical installation
Standard devices in a power range of 30 ... 45 kW
Mounting i n ”cold plate” technique
5
148
EDS84ASC552 EN 10.0
5.4.2 Mounting in ”cold plate” technique
The E84AVxxC... controllers are designed for assembly on coolers (e.g. collective coolers) in
”cold-plate” technique.
Requirements for collective coolers
A good thermal connection to the cooler is important for the trouble-free operation of
the c ontroller:
ƒ The c ontact area between the collective cooler and the controller
– must be at least as big as the cooling plate of the controller.
– must be smooth, the maximum deviation must not exceed 0.05 mm.
ƒ The c ollective cooler must be connected to the controller with all required screwed
joints.
ƒ The thermal resistance R
th
must be observed, s ee table.
The values in t he table apply to the operation of the controllers under rated
conditions.
The values include the heat transmission between the cooler and the device.
With a standard heat conducting paste and a film thickness of 50 m, the heat
transmission is approx. 0.007 K/W.
Power to be dissipated Thermal resistance
Type P
v[W]
R
th
[K/W]
E84AVxxC3034 720 0.053
E84AVxxC3734 810 0.047
E84AVxxC4534 1080 0.035
Ambient conditions
ƒ The rated data and the derating factors at increased temperature also apply to the
ambient temperature of the drive controllers.
ƒ Temperature at the cooling plate of the drive controller: max. 75 °C.
Note!
Apply s tandard heat-conducting paste or heat-conducting foil onto cooler and
cooling plate before you bolt the controller onto the cooler.
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