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The air inlet duct environment must meet the following conditions.
• Make sure that the temperature difference between the dry bulb and the wet bulb of the hygroscope is
at least 1 ℃ (1.8 °F) to avoid condensation.
• According to ASHRAE90.1-2013, the maximum variation rate of ambient temperature must be less
than 3 °F per 5 minutes (36 °F per hour).
Observe caution regarding UPS operating environmental conditions. The cooling methods used by some
data centers can create much wider ranges of temperature and relative humidity in the UPS room and/or
data center. This cooling method can cause two problems:
• It can cause a microclimate in the machine room. Microclimates are persistent variations of
temperature and/or relative humidity in the room. For example, one side of the room is always cooler
than the other, no matter what the actual temperature is.
• It can cause variation in the temperature and/or relative humidity. This problem occurs during the
operating transitions of the cooling system.
When ignored, either one of these aspects can create an undesirable microclimate at the UPS location. If
the environment created by this microclimate exceeds the UPS operating specifications, the UPS
reliability is reduced over time. These same environmental extremes create also reliability concerns for
any servers that are exposed to them.
Table 4. Environmental data
Ambient temperature +0 ℃ ... +40 ℃
Ambient temperature, battery
pack
+20 ℃ ... +25 ℃
Maximum relative humidity 95 %, non-condensing
Operating altitude Below 1,000 m (3,300 ft.)
If the system is operated at an altitude above 2,000 m (6,600 ft.),
contact Eaton’s service team for more information.
The operating environment of the UPS must meet the weight and size requirements provided in Table
5: UPS cabinet dimensions and weights to avoid the risk of an undesirable microclimate at the UPS
location.
If the above instructions are not obeyed, the warranty terms specified in Chapter
10.1 General information
about warranty become void.
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Obey the following guidelines when you install the UPS system:
• Install the system on a level floor suitable for computer or electronic equipment. The floor must be
suitable for heavy weight and wheeling.
• Install the system in a temperature- and humidity-controlled indoor area free of vibration, dust, high
humidity, flammable gases, flammable liquids, or corrosive substances.
• You can install the cabinet in a line-up-and-match configuration or in a standalone configuration.
The UPS equipment operating environment must meet the weight requirements shown in Table
5: UPS
cabinet dimensions and weights.
EATON 93T USER’S AND INSTALLATION GUIDE 614-40270
-
December 2023 www.eaton.eu 3300
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