Power to your Elbow

October 2003
Management Services;Oct2003, Vol. 47 Issue 10, p22
Academic Journal
The article discusses the installation of an uninterruptible power supply system (UPS) to protect information technology systems from power interruption. For every power cuts as such, even if it lasts only for a few seconds it takes for an alternative supply to kick in, and there are a hundred or more moments when the power goes substandard. The most common of these are brownouts, harmonic distortion and surges. Brownouts are when the current drops and the lights dim, thereby affecting computer systems. Though not to be recommended, they usually do no permanent damage to information technology equipment and are more a nuisance value than anything. A power surge is something else. This is when the power increases to well beyond the tolerance levels of the equipment connected to it. Protection from surges is simple and cheap. They cost only a few pounds and in networks where the main servers have total UPS protection may arguably be all that is required on the personal computers themselves. For total power cuts, UPS protection is necessary. A centralised system will protect a server and all personal computers. The switch from mains to battery power is not an issue in modern UPS systems, in fact in some the battery is on-line all the time being trickle charged so that no conventional switch-over is involved on mains power loss.


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