Installing the basic device
Basic devices in the power range 15 ... 30 kW
Mounting in ”cold plate” technique
4
4.2
4.2.4
4.2-4
EDSVF9333V EN 3.0-06/2005
4.2.4 Mounting in ”cold plate” technique
Note!
All 9300 vector frequency inverters are approved according to
UL508C. To maintain the guaranteed features, controllers in
”cold plate” must be mounted by the user. For this reason, these
frequency inverters have the marking UR (instead of UL).
The drive controllers can be mounted in ”cold plate” technology, e.g. on
collective coolers. For this purpose, the drive controllers of type EVF93xx-CV
must be used.
The following points are important for the safe operation of drive
controllers:
ƒ Good thermal connection to the cooler
– The contact surface between collective cooler and drive controller
must be at least as large as the cooling plate of the drive controller.
– Flat contact surface, max. deviation 0.05 mm.
– Connect the collective cooler with all specified screw connections
with the drive controller.
ƒ Adhere to thermal resistance R
th
given in the table. The values apply to
the operation of drive controllers under rated conditions.
9300 vector Cooling path Drive controller earth
Type Power to be dissipated
P
v
[W]
Heat sink -
surroundings
R
th
[K/W]
[kg]
EVF9327-CVV003 410 0.085 13
EVF9328-CVV003 610 0.057 13
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.
Requirements for collective
coolers
Ambient conditions
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