IEC 62040-1-2:2002 Uninterruptible Power Systems (UPS) - Part 1-2: General and Safety Requirements for UPS Used in Restricted Access Locations (Edition 1.0; Corrigendum 1: 12/2002)
2004IEC 62040-1-2:2004 Uninterruptible power systems (UPS) - Part 1-2: General and safety requirements for UPS used in restricted access locations
2002IEC 62040-1-2/COR1:2002 Uninterruptible power systems (UPS) - Part 1-2: General and safety requirements for UPS used in restricted access locations
2002IEC 62040-1-2:2002 Uninterruptible Power Systems (UPS) - Part 1-2: General and Safety Requirements for UPS Used in Restricted Access Locations (Edition 1.0; Corrigendum 1: 12/2002)