The terms Power Factor, Crest Factor, and Surge Factor refer to completely different and unrelated phenomena. These characteristics are often specified for UPS systems, and customers will sometimes place them in specifications. Most UPS systems today have sufficient Crest Factor and Surge Factor to meet virtually any requirement in a data room or data center. Therefore, their use in bid specifications is relatively unimportant. This paper explains the technical terms of Power Factor, Crest Factor, and Surge Factor.
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