Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for bells and chimesWhat is BS EN 61558 2 8 Transformers and power supply units for bells and chimes about? BS EN 61558 2 8 is a British standard which deals with the safety of bell and chime transformers and power supply units incorporating bell and chime transformers. Transformers incorporating electronic circuits are also covered by BS EN 61558 2 8. BS EN 61558 2 8 is applicable to stationary, single phase, air cooled (natural or forced) independent or associated dry

5 mass concentrations at stationary emission sources by use of two-stage virtual impactors

NOTE: This standard does not apply to equipment intended to operate in light industrial environments which are within the scope of BS EN 61000-6-3: 2007+A1: 2011

Contents of BS EN 62002 include:

Noise figure parameters

BS EN 848-3 this document is not applicable to NC boring machines

and units have been updated

BS EN 60118-14 specifies the electrical and mechanical requirements for an interface device to allow a general-purpose control device such as a desktop computer to be connected to hearing aids

Guidance on subjects not covered by BS EN 1992-2

For assuring customer satisfaction

may be required

c) basic safety requirements

The EN 50483 series applies to overhead line fittings for tensioning