Chapter 1 - Installation Procedure Liebert Hipulse E Installation Manual
Installation (Mechanical) Single or '1+N' UPS System
Page 1-2 (07/04)
1.2 Environmental considerations
1.2.1 UPS location
The UPS module should be located in a cool, dry, clean-air environment with adequate ventilation to keep the ambient
temperature within the specified operating range (see Chapter 5 UPS Environmental).
All models in the 'Hipulse' UPS range are cooled with the aid of internal fans.
Cooling air enters the devices through the ventilation grids located at various points on the cabinet and is released
through the grids on the roof. To permit air to enter and exit and prevent overheating or malfunctioning, do not cover
the ventilation openings.
When the cabinet is located on a raised floor, and bottom cable entry is used, additional cooling air also enters the UPS
via the floor void. If necessary, a system of extractor fans should be installed to aid cooling-air flow, and a suitable air
filtration system used where the UPS is to operate in a dirty environment.
Note 1: When batteries are cabinet-mounted adjacent to the UPS module, it is the battery which dictates the designed
maximum ambient temperature, not the UPS.
Note 2: Power losses from the System which may be used in an air conditioning system are intended for operation
using the Inverter, as in the ECOMODE configuration they would be undersized.
Air filters:
The optional dust filters can be installed behind the air intake in the front door(s). By opening the front door, the
filters can be changed easily without exposing personnel to high voltage. A schedule for inspection of the air filters
is required. The period between inspections will depend upon environmental conditions.
1.2.2 Battery location
Temperature is a major factor in determining the battery life and capacity. Battery manufacturers quote figures for an
operating temperature of 20°C. Operating above this temperature will reduce the battery life, operation below this
temperature will reduce the battery capacity. On a normal installation the battery temperature is maintained between
15°C and 25°C. Batteries should be mounted in an environment where the temperature is consistent and even over the
whole battery. Keep batteries away from main heat sources or main air inlets etc.
If the batteries are rack-mounted, or otherwise located remote to the main UPS cabinet, a battery circuit breaker must be
mounted as close as possible to the batteries themselves, and connected using the most direct route possible.
The battery circuit breaker controller board (P\N° 4520079F) must be used in conjunction with the battery circuit
breaker.
This control board, which should be located near to the battery circuit breaker, interfaces with the UPS control system.
1.2.3 Storing
If unit is to be stored before installation, it is recommended to store the unit in a dry environment with temperatures in
the range of -25°C to 70°C. Use original packing materials or other suitable means to keep the unit clean.
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