This international product standard specifies the process and requirements to declare the environmental impact of Uninterruptible Power Systems (UPS), with the goal of promoting reduction of the environmental impact during a complete UPS life-cycle. This International Standard is valid for movable, stationary and fixed electronic UPS that deliver single or three phase fixed frequency a.c. output voltage not exceeding 1 000 V a.c. and that incorporate an energy storage system, generally connected through a d.c. link.