EN 50491-3:2009 General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 3: Electrical safety requirements
CENELEC - European Committee for Electrotechnical Standardization
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EN 50491-3:2009
Scope
This European Standard provides the electrical safety requirements for all devices connected to HBES/BACS. This European Standard is applicable to ?C operator stations and other human system interface devices@ ?C devices for management functions@ ?C control devices@ automation stations and application specific controllers@ ?C field devices@ ?C cabling and interconnection of devices. This European Standard covers the following requirements and compliance criteria: ?C protection from hazards in the device; ?C protection from overvoltages on the network; ?C protection from touch current; ?C protection from hazards caused by different type of circuits; ?C protection of the communication wiring from overheating caused by excessive current.
EN 50491-3:2009 history
2009EN 50491-3:2009 General requirements for Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS) - Part 3: Electrical safety requirements