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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Data Center AC Issues
At 10:18 PM 9/24/01 -0400, [email protected] wrote: Are you monitoring your line voltage?Can anyone recommend an expert Troubleshooting/Design firm that has extensive experience with Data Center specifici AC issues? We have a strange problem (probably with the airflow/vents/arrangements) which has machines in various locations dying due to heat, when the ambient temp isn't above 90. I've seen "normal" AC lines, in the US, anywhere from 70-140VAC. Modern equipment use switcher power supplies, which draw more current as the voltage goes lower. Heat in the power supply is a function of current squared. So, as the line voltage goes lower, the equipment gets hotter. (paradoxical-seeming, ain't it?) -- Dave's Engineering Page: http://www.dvanhorn.org Got a need to read Bar codes? http://www.barcodechip.com Bi-directional read of UPC-A, UPC-E, EAN-8, EAN-13, JAN, and Bookland, with two or five digit supplemental codes, in an 8 pin chip, with NO external parts.
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