2 Chapter 1 Installation Of UPS Module
NXr UPS Module And Parallel System 30kVA ~ 200kVA User Manual
1.3 Location Selection
1.3.1 UPS Room
The UPS is designed for indoor installation. It should be installed in a clean environment with adequate ventilation to
keep the environmental parameters within the specified operating range (see Table 8-2). For example, the UPS
should not be installed in an environment outside the specified operating range, like in thruway tunnels or outdoor
places without air-conditioning.
The UPS uses forced cooling by internal fans. Cooling air enters the UPS through the ventilation grills at the front of
the cabinet and exhausted through the ventilation grills in the rear of the cabinet. Do not obstruct the ventilation holes.
If necessary, install a system of extractor fans to aid cooling-air flow to avoid room temperature buildup. An air filter
should be used when the UPS is to operate in a dirty environment.
Note
The UPS should be installed on a cement surface or other surface that is not combustible.
1.3.2 External Battery Room
Batteries generate some amount of hydrogen and oxygen at the end of charge, so the fresh air volume of the battery
installation environment must meet the EN50272-2001 requirements.
The ambient temperature of the battery must be stable. Ambient temperature is a major factor in determining the
battery capacity and life. The nominal operating temperature of the battery is 20°C. Operation above this temperature
will reduce the battery life, and operation below this temperature will reduce the battery capacity. If the average
operating temperature of the battery rises from 20ºC to 30ºC, the service life of the battery will be reduced by 50%. If
the operating temperature of the battery is above 40ºC, the battery service life will be decreased in exponent rate. In
a normal installation, the battery temperature is maintained between 15°C and 25°C. Keep batteries away from heat
sources and ventilation holes.
If external battery is used, a battery protective device (for example, fuse or circuit breaker) shall be installed. The
battery protective device shall be installed as close to the battery as possible, and the cabling distance between the
battery protective device and the battery shall be minimized.
1.3.3 Storage
Should the UPS not be installed immediately, it must be stored in a room for protection against excessive humidity
and heat sources (see Table 8-2). The battery needs to be stored in a dry and cool place with good ventilation. The
most suitable storage temperature ranges from 20ºC to 25ºC.
Warning
During storage, periodically charge the battery according to the battery manufacturer instructions. In the charge process,
temporarily connect the UPS to the mains and activate the battery for the time required for recharging the battery.
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