Danfoss VLT 6000 Installation Manual page 17

®
VLT 5000/6000/8000
High Power Installation Guide
Illustration 3.15: Position of earth terminals IP21 (NEMA type 1) and IP54 (NEMA type 12)
Cooling
Cooling can be obtained in different ways, by using the cooling ducts in the bottom and the top
of the unit, by using the ducts in the backside of the unit or by combining the cooling possibilities.
Airflow
The necessary airflow over the heat sink must be secured. The flow rate is shown below.
Enclosure
IP00 / Chassis
IP21 / NEMA 1
IP54 / NEMA 12
Table 3.2: Heat Sink Air Flow
D1 and D2
E1
D1 and D2
E1
MI.90.J2.02 - VLT ® is a registered Danfoss trademark
Door fan / Top fan air- Airflow over heatsink
flow
255 m 3 /h (150 cfm) 765 m
255 m 3 /h (150 cfm) 1444 m
3
170 m /h (100 cfm) 765 m
3
340 m /h (200 cfm) 1444 m
3. Installation
3 /h (450 cfm)
3 /h (850 cfm)
3
/h (450 cfm)
3
/h (850 cfm)
17
3