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4.7 Ventilation and cooling
Figure 4.7.1 - Installation on plain floor
The heat produced by the PDU is transferred to the environment by its ventilation.
Ventilation air enters the cabinet through vented kickplates and exits through a vent located on top of the
cabinet. Solid kickplates may be used if the PDU is installed on a raised floor with chilled air being fed through the
floor.
Note!
Do not put anything on the top of the cabinet.
18" (460mm) of air clearance from the top must be left free of any object for a sufficient exhausted
air exchange, proper cooling, service access and safety.
Air filtering systems could be required when the PDU operates in a dirty environment.
In order to prevent the system from overheating, proper ventilation must be provided in order to extract the heat
generated by the PDU. Ensure that the ambient temperature is kept within the specified operating range of 32°F
to 104°F (0°C to 40°C). Contact your ABB Service Center for appropriate solutions.
The below table indicates the heat dissipation at full load at PF = 1, up to 3280 ft (1000 m) altitude.
PDU Model
5,220 BTU/hr
50kVA
6,278 BTU/hr
75kVA
9,656 BTU/hr
125kVA
11,260 BTU/hr 3.30 kW
150kVA
16,105 BTU/hr 4.72 kW
225kVA
20,506 BTU/hr 6.01 kW
300kVA
K = 4
1.53 kW
5,835 BTU/hr
1.84 kW
7,984 BTU/hr
2.83 kW
12,351 BTU/hr 3.62 kW
14,092 BTU/hr 4.13 kW
20,813 BTU/hr 6.10 kW
26,921 BTU/hr 7.89 kW
Figure 4.7.2 - Installation on raised floor
Heat Output
K = 13
1.71 kW
2.34 kW
®
TruFit
Power Distribution Unit│94-1100-00002873 A0 EN 17/34
Installation Guide
K = 20
6,585 BTU/hr
1.93 kW
9,451 BTU/hr
2.77 kW
14,262 BTU/hr 4.18 kW
16,548 BTU/hr 4.85 kW
23,952 BTU/hr 7.02 kW
31,459 BTU/hr 9.22 kW
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