Eaton 93PS - Page 40

Figure 8: UPS cabinet clearances
• X = clearance at the back of the UPS cabinet
• Y = clearance at the top of the UPS cabinet
The basic environmental requirements for the operation of the UPS system are
as follows:
• Ambient temperature range: from +0 to +40 °C
• Recommended operating range: from +20 to +25 °C
• Maximum relative humidity: 95%, non-condensing
It is required that there is proper ventilation in the UPS room. In order to keep the
maximum room temperature rise at the desired level, the air flow must be
sufficient and at the following levels:
• To limit the temperature rise to a maximum of +5 °C, the required air flow is
600 m
3
/h per 1 kW of losses.
• To limit the temperature rise to a maximum of +10 °C, the required air flow is
300 m
3
/h per 1 kW of losses.
An ambient temperature from +20 °C to +25 °C is recommended to achieve a
long life of the UPS and batteries. The cooling air that enters the UPS must not
exceed +40 °C. Avoid high ambient temperature, moisture, and humidity.
For ventilation requirements, see 93PS heat rejection in Table 12: 93PS Air
conditioning or ventilation requirements during full load operation, and 91PS heat
rejection in Table 13: 91PS Air conditioning or ventilation requirements during full
load operation.
© Eaton Corporation plc 2020. All rights reserved. Revision: 006 Document ID: P-164000493 40 (126)
Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide