UPS Systems - Environmental Conditions for a UPS
By: Mark Hendley

Category: Business » Manufacturing
Article Views: [224] (Old Stats: 234)

Remember, PowerContinuity Means Business Continuity. To ensure that failure is not an option, always take into consideration: is your power protected? If not, what steps should you take to ensure that it is?

HEAT

All UPS manufacturers will quote a maximum operating temperature for their equipment (typically +40C). The air conditioning plant must have sufficient capacity to maintain the conditions stated. Obviously the overall efficiency of the UPS will have a significant effect on both the size and the operating cost of the air conditioning plant. The high efficiency figures (up to 97). Whilst most UPS equipment is well designed, high relative humidity levels may promote corrosion of cabinets and internal parts. Simple dehumidification equipment is available for sites where this may be a problem.

AUDIBLE NOISE

The unit of sound intensity is the decibel (dB) and it represents the ratio between the sound level measured with a microphone and a reference sound level, Odb, which is defined to be approximately equal to the threshold of human hearing. However as the human ear is less sensitive to very low and very high frequencies, an additional 'A' Filter is applied when measuring background or other intrusive noises, hence the dBA unit used by all UPS manufacturers.

Typical audible noise figures for fully loaded UPS equipment range from 50dBA for 5dVA to 60dBA at 60kVA.

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