Power size 2 3 4 5
450 kW (480 V), 630-710 kW
(690 V)
34.9 86.9 122.2 174.2
500-800 kW (480 V),
800-1000 kW (690 V)
46.3 98.3 119.0 171.0
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
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
3
/h (460 cfm).
Airflow
The necessary airflow over the heat sink must be secured.
The flow rate is shown below.
Enclosure protection Frame size Door fan(s)/Top fan airflow Heat sink fan(s)
IP21/NEMA 1
IP54/NEMA 12
D1 and D2
170 m
3
/h (100 cfm) 765 m
3
/h (450 cfm)
E1 P250T5, P355T7, P400T7
340 m
3
/h (200 cfm) 1105 m
3
/h (650 cfm)
E1P315-P400T5, P500-P560T7
340 m
3
/h (200 cfm) 1445 m
3
/h (850 cfm)
IP21/NEMA 1 F1, F2, F3 and F4
700 m
3
/h (412 cfm)* 985 m
3
/h (580 cfm)*
IP54/NEMA 12 F1, F2, F3 and F4
525 m
3
/h (309 cfm)* 985 m
3
/h (580 cfm)*
IP00/Chassis D3 and D4
255 m
3
/h (150 cfm) 765 m
3
/h (450 cfm)
E2 P250T5, P355T7, P400T7
255 m
3
/h (150 cfm) 1105 m
3
/h (650 cfm)
E2 P315-P400T5, P500-P560T7
255 m
3
/h (150 cfm) 1445 m
3
/h (850 cfm)
* Airflow per fan. Frame size F contain multiple fans.
Table 3.9 Heat sink Air Flow
How to Install
VLT
®
Automation Drive FC 300 Operating Instructions
32 MG33U402 - Rev. 2013-12-16
33
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