Liebert 130 kVA user manual Environmental considerations, UPS location, Battery location

User Manual

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

2.2Environmental considerations

2.2.1UPS 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.

2.2.2Battery 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.

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