Cooling And Airflow - Danfoss VLT AutomationDrive FC 300 Design Manual

Mechanical Installation
870 . 7
70 . 0
[ 34 . 252 ]
593 . 0
[ 2.756 ]
[ 23 . 346 ]
535 . 0
[ 21 . 0631 ]
37 . 2
[ 1 . 466 ]
733 . 0
36 . 5
[ 28 . 858 ] 800 . 0
[ 1 . 437 ]
[ 31. 496 ]
Illustration 6.94 Frame Size F13
1 Place conduits in shaded areas
Table 6.61 Legend to Illustration 6.94

6.2.9 Cooling and Airflow

Cooling
Cooling can be achieved through one of the following methods:
•
cooling ducts in the bottom and the top of the unit
•
back-channel cooling
•
combination of the cooling ducts and the back-channel cooling
Duct cooling
A dedicated option has been developed to optimise installation of IP00/chassis frequency converters in Rittal TS8 enclosures
utilizing the fan of the frequency converter for forced air cooling of the back channel. The air out the top of the enclosure
could be ducted outside a facility so the heat losses from the back channel are not dissipated within the control room,
reducing air conditioning requirements of the facility.
Back cooling
The back channel air can also be ventilated in and out the back of a Rittal TS8 enclosure. Using this method, the back
channel could take air from outside the facility and then return the heat losses outside the facility, thus reducing air
conditioning requirements.
NOTICE
A door fan is required on the enclosure to remove the heat losses not contained in the back channel of the frequency
converter and any additional losses generated from other components installed inside the enclosure. The total required
air flow must be calculated so that the appropriate fans can be selected. Some enclosure manufacturers offer software
for performing the calculations.
Airflow
The necessary airflow over the heat sink must be secured. The flow rate is shown in Table 6.62.
®
VLT AutomationDrive FC 300 Design Guide 90-1200 kW
1657 . 7
[ 65 . 2641 ]
593 . 0
[ 23 . 346 ]
1533 . 0
[ 60 . 354 ] 1600 . 0
[ 62 . 992 ]
2733 . 0
[ 107 . 598 ]
MG34S202 - Rev. 2013-08-19
994 . 3
[ 39 . 146 ]
1
199 . 5
[ 7 . 854 ]
258 . 5
[ 10 . 177 ]
6 6
155