Uninterruptible power-supply systems (UPS) - Part 1: General and safety requirements
|Publication Date:||1 July 1994|
|ICS Code (Rectifiers. Converters. Stabilized power supply):||29.200|
This standard applies to electronic indirect a.c. convertor systems with electrical energy storage means in the d.c. link. The primary function of the uninterruptible power system (UPS) covered by this standard is to ensure continuity of an alternating power source. The uninterruptible power system may also serve to improve the quality of the power source by keeping it within specified characteristics. This standard is applicable to movable, stationary and fixed and built in UPS for distribution systems up to 1000 V a.c. This standard applies to UPS intended to be installed in any operator accessible area and specifies requirements to ensure safety for the operator and layman who may come into contact with the equipment and, where specially stated, for service personnel. The standard is intended to ensure the safety of installed equipment, both as single unit or as a system of interconnected units, subject to installing, operating and maintaining the equipment in the manner prescribed by the manufacturer. This standard does NOT cover d.c. supplied electronic ballasts (IEC 924 and 925), UPS intended to be installed in separated electrical locations and UPS based on rotating machines.