BS EN IEC 62040-3:2021

1   Scope This Part of IEC 62040 establishes the performance and test requirements applied to movable , stationary and fixed electronic uninterruptible power systems ( UPS ) that

• are supplied from AC voltage not exceeding 1 000 V,

• deliver AC output voltage not exceeding 1 000 V,

• incorporate an energy storage device not exceeding 1 500 V DC, and

• have a primary function to ensure continuity of load power .

This document specifies performance and test requirements of a complete   UPS   and, where applicable, of individual   UPS  functional units  . Requirements for the individual   UPS  functional units   found in IEC publications listed in the Bibliography apply so far that they are not
  in contradiction with this document. 

   
      UPS 
       are developed for a wide range of power, from less than hundred watts to several
  megawatts, to meet requirements for availability and quality of power to a variety
  of   loads  . Refer...