Applies to single UPS units or UPS systems comprising a number of interconnected UPS and associated control/switchgear forming a single power system, intended to be installed in any operator accessible area or in separated electrical locations, connected to either industrial or public low voltage supply networks. Takes precedence over all aspects of the generic standards, and no additional testing is necessary. Takes into account differing test conditions necessary to encompass the range of physical sizes and power ratings of UPS. A UPS unit or system shall meet the relevant requirements of this standard as a stand-alone product. Special installation environments are not covered, nor are fault conditions of UPS taken into account. This standard does not cover d.c. supplied electronic ballast (IEC 60924 and IEC 60925) or UPS based on rotating machines. States EMC requirements, test methods, minimum performance levels.