Options Cabinet, Enclosure Size F15; Cooling And Airflow - Danfoss vlt series Operating Instructions Manual

How to Install

3.2.4.9 Options Cabinet, Enclosure Size F15

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Illustration 3.21 Terminal Locations – Left, Front, and Right Views

3.2.5 Cooling and Airflow

Cooling
Cooling can be achieved in different ways:
•
By using the cooling ducts at the top and bottom
of the unit.
•
By taking air in and out the back of the unit.
•
By combining the cooling methods.
Duct cooling
A dedicated option has been developed to optimize the
installation of frequency converters in Rittal TS8 enclosures
utilizing the frequency converter fan for forced air cooling
of the backchannel. The air out of the top of the enclosure
could be ducted outside a facility so the heat losses from
the backchannel are not dissipated within the control
room. Ducting the air outside the facility ultimately
reduces the air-conditioning requirements of the facility.
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Danfoss A/S © 04/2016 All rights reserved.
Back cooling
The backchannel air can also be ventilated in and out of
the back of a Rittal TS8 enclosure. The backchannel takes
cool air from outside the facility and returns warm air to
outside the facility, thus reducing air-conditioning
requirements.
Airflow
Ensure sufficient airflow over the heat sink. The flow rate is
shown in Table 3.8.
Enclosure Door fans/Top fan
protection airflow
IP21/NEMA 1
3
700 m /h (412 cfm)
IP54/NEMA 12
525 m 3 /h (309 cfm)
Table 3.8 Heat Sink Air Flow
1) Airflow per fan. Enclosure sizes F contain multiple fans.
Heat sink fans
1) 3 1)
985 m /h (580 cfm)
1) 985 m 3 /h (580 cfm) 1)
MG34Q402