When the only way is ups

Article Abstract:

Many companies nowadays depend heavily on their computer systems and computers have a very small tolerance to fluctuations or interruptions of their power supplies yet in the UK only around 10% of such systems are protected by being connected to uninterruptible power supplies (ups). The figure for the US and France is over 25%. There are two types of system, on-line and off-line. On-line provides the power at all times and therefore provides best protection. Off-line switches into play when the power supply reaches a critical value, provides somewhat less protection but is much cheaper.

Computers, Information management, Power supplies (Computers)

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Sizing ups for the future

Article Abstract:

Planning and installing an uninterruptible power supply should be carefully carried out to ensure the maximum cost-efficiency. The size of the ups should depend on the calculated total load with provision made for future load increases. Installation should be planned to avoid disruption to the customer while commissioning should be undertaken by the manufacturer. Maintenance of ups systems is a specialised area but sales and installation can be profitable for electrical contractors.

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Making plans for power

Article Abstract:

Business organizations should consider ways to establish reliable power quality into the next millennium. A study indicates that US firms will lose up to 100 billion US dollars in the next one-and-a-half years. Total power protection programmes need to be established to ensure a safe and consistent power supply. The use of uninterrupted power supply equipment is useful in many instances. A power quality pyramid is illustrated.

Safety and security measures, Power resources, Power failure, Power failures

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