Ventilation And Cooling - GE Digital Energy LP 33 Operating Manual

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4.5

VENTILATION AND COOLING

The heat produced by the UPS is transferred to the environment by its internal blowers.
Fig. 4.5-1 Airflow through the LP 33
Heat evacuation from UPS room
The heat must be evacuated from the
environment with a proper cooling / ventilation
system provided by the user.
Air volume and losses of the UPS
The approximate minimum air volume needed to evacuate the heat generated by the UPS, for
inlet temperature max. 35°C (95°F), for the standard version at inverter nominal load with PF =
0.8 lag. and battery charged, are the following:
UPS model
On-line mode
LP 33 / 10 kVA
LP 33 / 20 kVA
LP 33 / 30 kVA
OPM_LPS_33E_10K_30K_4CN_V010.doc
Air volume
IEM mode
3
250 m /h 50 m
3
500 m /h 100 m
3
700 m /h 150 m
Airflow through the UPS
It is important that the cooling air can freely
flow through the air inlets and outlets of the
UPS.
NOTE !
Insufficient distances on both sides of
the UPS could increase the temperature
inside the UPS.
Do not put any object on the top of the
cabinet: it might obstruct the air flow.
Fig. 4.5-2 Heat evacuation from UPS room
On-line mode
3
/h 0.79 kW
3
/h 1.58 kW
3
/h 2.37 kW
Operating Manual LP 33 / 10-20-30 kVA
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GE
Losses
IEM mode
0.16 kW
0.33 kW
0.49 kW