Cooling Requirements; Airflow Rates - Danfoss VLT FC 103 Operating

VLT® Refrigeration Drive FC 103
Operating Guide

4.7 Cooling Requirements

OVERHEATING
Improper mounting can result in overheating and reduced performance.
-
Install the drive following the installation and cooling requirements.
• Ensure that top and bottom clearance for air cooling is provided. Clearance requirement: 225 mm (9 in).
• Provide sufficient airflow flow rate. See
• Consider derating for temperatures starting between 45 °C (113 °F) and 50 °C (122 °F) and elevation 1000 m (3300 ft) above sea
level.
The enclosed drive, excluding the input power options cabinet, utilizes a back-channel cooling concept that removes the air used to
cool the heat sink. The heat sink cooling air carries approximately 90% of the heat out of the back channel of the drive. Different
back-channel cooling kits are available to redirect the airflow based on individual needs.

4.8 Airflow Rates

Table 39: Airflow Rates for D9h Enclosure
Cabinet Back-channel fan [m
PHF/line reactor 450 (265)
Drive 420 (250)
dU/dt –
Sine-wave 900 (530)
Top entry/top exit –
Table 40: Airflow Rates for D10h Enclosure
Cabinet Back-channel fan [m
PHF/line reactor 450 (265)
Input options –
Drive 840 (500)
dU/dt –
Sine-wave 900 (530)
Top entry/top exit –
Table 41: Airflow Rates for E5h Enclosure
Cabinet Back-channel fan [m
PHF/line reactor 765 (450)
Input options –
Drive 994 (585)
dU/dt 665 (392)
Sine-wave 2x900 (530)
Top entry/top exit –
Danfoss A/S © 2020.09
N O T I C E
4.8 Airflow Rates.
3
/hr (cfm)] Drive module top fan [m
–
102 (60)
–
–
–
3
/hr (cfm)] Drive module top fan [m
–
–
204 (120)
–
–
–
3
/hr (cfm)] Drive module top fan [m
–
–
595 (350)
–
–
–
Mechanical Installation
3
/hr (cfm)] Cabinet door fan [m
–
150 (90)
–
–
–
3
/hr (cfm)] Cabinet door fan [m
–
510 (310)
315 (185)
–
–
–
3
/hr (cfm)] Cabinet door fan [m
–
510 (310)
335 (200)
–
–
–
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3
/hr (cfm)]
3
/hr (cfm)]
3
/hr (cfm)]