Mechanical Installation; Ventilation - Danfoss MCD3000 Series Manual

Mechanical installation

Models MCD3007~3132 have an IP21 rating and can
be wall mounted or installed inside another enclosure.
These models can be mounted side by side with no
clearance.
Models MCD3185~3800 have an IP20 rating and
must be mounted in another enclosure. These models
must have a clearance of 100mm (4 inches) on either
side.
ATTENTION
Do not mount in direct sunlight or near heat
radiating elements.

Ventilation

MCD3000 cooling is by means of air circulation.
Consequently, the air needs to be able to move freely
above and below the soft starter.
Soft starters dissipate approximately 4.5 watts per
amp. When installing a soft starter in a switchboard or
MG.15.A2.22 – VLT is a registered Danfoss trademar
MCD3000 Series
other enclosure, ensure there is sufficient airflow
through the enclosure to limit heat rise in the
enclosure.
The table below shows airflow requirements for
selected motor currents.
Motor Heat
Amps (watts)
10 45
20 90
30 135
40 180
50 225
75 338
100 450
125 563
150 675
175 788
200 900
250 1125
300 1350
350 1575
400 1800
450 2025
500 2250
550 2475
600 2700
ATTENTION
If other heat sources are installed in an
enclosure with the MCD3000, this heat must
also be considered when calculating required airflow.
ATTENTION
If the MCD3000 is installed in an enclosure
without ventilation a bypass contactor should
be employed to prevent heat dissipation during run.
3
Required Airflow m /min
o o o o
5 C/41 F 10 C/50 F
Rise Rise
0.5 0.2
0.9 0.5
1.4 0.7
1.8 0.9
2.3 1.1
3.4 1.7
4.5 2.3
5.6 2.8
6.8 3.4
7.9 3.9
9.0 4.5
11.3 5.6
13.5 6.8
15.8 7.9
18.0 9.0
20.3 10.1
22.5 11.3
24.8 12.4
27.0 13.5
7