Information Letter GUIDELINES FOR GROUNDING …

Page 1 Revised2/15/97 Information technology Industry Council (ITI, formerly CBEMA) Information LetterGUIDELINES FOR GROUNDING Information technology equipment (ITE)Ninety percent (90%) of the problems withITE installations are internal to the facility;only 10% are related to conditions on theutility electric service. Importantly, 75% ofthe problems arising within a facility arerelated to GROUNDING making proper andadequate GROUNDING the single-mostimportant factor in reliable ITE : To establish GUIDELINES forgrounding of power systems and equipmentfor ITE : Computer room systems, distributedprocessing systems and stand alone : To achieve a low impedance,common ground reference for allinterconnected ITE (InformationTechnology equipment ) to prevent orreduce the likelihood shock hazard; damage fromtransient voltage events; contamination or upsetfrom noise voltage andcurrents in 1 and 2 are typically due to lowfrequency (<100kHz) events.

Information Letter GUIDELINES FOR GROUNDING INFORMATION TECHNOLOGY EQUIPMENT (ITE) Ninety percent (90%) of the problems with ITE installations are internal to the facility; only 10% are related to conditions on the utility electric service. Importantly, 75% of the problems arising within a facility are related to grounding making proper and

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