Liebert 130 kVA

User Manual

Hipulse - Single Phase ‘1+N’ UPS System 130 kVA - 110V

2.2 Environmental considerations

2.2.1 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 9 - Specifications).

All models in the ‘Hipulse’ UPS range are cooled with the aid of internal fans. Cooling

air enters the module through ventilation grills located at various parts of the cabinet

and exhausted through grills located on the back of UPS. 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.

2.2.2 Battery location

Temperature is a major factor in determining the battery life and capacity. Battery

manufacturers quote figures for an operating temperature of 20oC. 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 15oC and 25oC. 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.

The batteries can be mounted in purpose-built battery cabinet, which is positioned

adjacent to the UPS module. Pedestals are required for the battery cabinets when

they are located on raised floors, in the same way as for the UPS cabinets. 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. A customized

remote battery circuit breaker box, containing the circuit breaker and its necessary

control board, is also available as a standard option.