Cooling And Airflow - Danfoss VLT AutomationDrive FC 302 Operating Instructions Manual

How to Install
Power size
450 kW (480 V), 630-710 kW
(690 V)
500-800 kW (480 V),
800-1000 kW (690 V)
3 3
Table 3.8 Dimension for Terminal

3.2.6 Cooling and Airflow

Cooling
Cooling can be obtained in different ways, by using the
cooling ducts in the bottom and the top of the unit, by
taking air in and out the back of the unit or by combining
the cooling possibilities.
Duct cooling
A dedicated option has been developed to optimize instal-
lation of IP00/chassis frequency converters in Rittal TS8
enclosures utilizing the fan of the frequency converter for
forced air cooling of the backchannel. The air out the top
of the enclosure could but ducted outside a facility so the
heat loses from the backchannel are not dissipated within
the control room reducing air-conditioning requirements of
the facility.
Please see Installation of Duct Cooling Kit in Rittal enclosures,
for further information.
Back cooling
The backchannel air can also be ventilated in and out the
back of a Rittal TS8 enclosure. This offers a solution where
the backchannel could take air from outside the facility
Enclosure protection
IP21/NEMA 1
IP54/NEMA 12
IP21/NEMA 1
IP54/NEMA 12
IP00/Chassis
* Airflow per fan. Frame size F contain multiple fans.
Table 3.9 Heat sink Air Flow
32
®
VLT Automation Drive FC 300 Operating Instructions
2
34.9
46.3
Frame size
D1 and D2
E1 P250T5, P355T7, P400T7
E1P315-P400T5, P500-P560T7
F1, F2, F3 and F4
F1, F2, F3 and F4
D3 and D4
E2 P250T5, P355T7, P400T7
E2 P315-P400T5, P500-P560T7
MG33U402 - Rev. 2013-12-16
3 4
86.9 122.2
98.3 119.0
and return the heat loses outside the facility thus reducing
air-conditioning requirements.
NOTICE
A door fan(s) is required on the enclosure to remove the
heat losses not contained in the backchannel 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 (i.e. Rittal Therm software). If the frequency
converter is the only heat generating component in the
enclosure, the minimum airflow required at an ambient
temperature of 45 °C for the D3 and D4 frequency
converters is 391 m 3 /h (230 cfm). The minimum airflow
required at an ambient temperature of 45 °C for the E2
frequency converter is 782 m
Airflow
The necessary airflow over the heat sink must be secured.
The flow rate is shown below.
Door fan(s)/Top fan airflow
3
170 m /h (100 cfm)
3
340 m /h (200 cfm)
340 m 3 /h (200 cfm)
700 m 3 /h (412 cfm)*
3
525 m /h (309 cfm)*
3
255 m /h (150 cfm)
255 m 3 /h (150 cfm)
3
255 m /h (150 cfm)
5
174.2
171.0
3
/h (460 cfm).
Heat sink fan(s)
3
765 m /h (450 cfm)
3
1105 m /h (650 cfm)
1445 m 3 /h (850 cfm)
985 m 3 /h (580 cfm)*
3
985 m /h (580 cfm)*
3
765 m /h (450 cfm)
1105 m 3 /h (650 cfm)
3
1445 m /h (850 cfm)