Multi-part Document
BS EN 50091 - Specification for uninterruptible power systems (UPS)

This is a multi-part document divided into the following parts:

• Part 1 Specification for uninterruptible power systems (UPS). General and safety requirements
• Part 1-1 Uninterruptible power systems (UPS). General and safety requirements for UPS used in operator access areas
• Part 1-2 Specification for uninterruptible power systems (UPS). General and safety requirements for UPS used in restricted access locations
• Part 2 Specification for uninterruptible power systems (UPS). EMC requirements