Cooling And Airflow (125 Hp And Above); Lifting - GE AF-600 FP Series Design And Installation Manual

Installation

2.3.2 Cooling and Airflow (125 HP and above)

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.
2 2
Duct cooling
A back-channel cooling kit is available to direct the heatsink cooling air out of the panel when an IP20/chassis frequency
converters is installed in a Rittal enclosure. Use of this kit reduces the heat in the panel and smaller door fans can be
specified on the enclosure.
Back cooling
The back channel cooling air can be ventilated out of the room so that the heat from the back channel is not dissipated
into the control room. A door fan(s) is required on the enclosure to remove the heat not contained in the backchannel of
the frequency converters and any additional losses generated by other components inside the enclosure. The total required
air flow must be calculated so that the appropriate fans can be selected.
Airflow
The necessary airflow over the heat sink must be secured. The flow rate is in Table 2.2.
Protection
IP20/Chassis
IP00/Chassis
IP21/Nema 1
IP54/Nema 12
Table 2.2 Heatsink Airflow
* Airflow per fan. Unit Sizes 6X contain multiple fans.

2.3.3 Lifting

•
Check the weight of the unit to determine a safe
lifting method
•
Ensure that the lifting device is suitable for the
task
•
If necessary, plan for a hoist, crane, or forklift with
the appropriate rating to move the unit
•
For lifting, use hoist rings on the unit, when
provided
14
TM
AF-600 FP Design and Installation Guide
Unit size Door fan(s)/Top fan
43h
102 m
44h
204 m
51 340 m
41h 102 m
42h
204 m
52
255 m
61, 62, 63, 64 700 m
41h
102 m
42h
204 m
52 255 m
61, 62, 63, 64 525 m
3
/hr (60 CFM)
3
/hr (120 CFM)
3
/h (200 cfm)
3
/hr (60 CFM)
3
/hr (120 CFM)
3
/h (150 cfm)
3
/h (412 cfm)*
3
/hr (60 CFM)
3
/hr (120 CFM)
3
3/h (150 cfm)
3
/h (309 cfm)*
Illustration 2.2 Recommended Lifting Method, 4X and 5X Unit
Sizes.
WARNING
Maximum diameter for bar is 2.5 cm (1 inch). The angle
from the top of the frequency converter to the lifting cable
should be 60° or greater.
DET-768b
Heatsink fan(s)
3
420 m /hr (250 CFM)
3
840 m /hr (500 CFM)
3
1445 m /h (850 cfm)
3
420 m /hr (250 CFM)
3
840 m /hr (500 CFM)
3
1445 m /h (650 cfm)
3
985 m /h (580 cfm)*
3
420 m /hr (250 CFM)
3
840 m /hr (500 CFM)
3
1445 m /h (650 cfm)
3
985 m /h (580 cfm)*