Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for class III handlamps for tungsten filament lamps Ingestion-build-279162 Enable the organization to identify

Enable the organization to identify trends and eliminate causes of complaints

5 Selection of items for test and product families

BS EN 13981-4 on technical conditions for inspection and delivery - forgings is useful for:

It covers the chemical composition limits and mechanical properties of aluminium casting alloys

When a change occurs which could alter system performance

Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for class III handlamps for tungsten filament lamps Ingestion-build-279162 Enable the organization to identify1 Scope Replacement: This part of IEC 61558 deals with the safety of transformers for class III handlamps for tungsten filament lamps and power supply units incorporating transformers for class III handlamps for tungsten filament lamps. Transformers incorporating electronic circuits are also covered by this standard. NOTE 1 Safety includes electrical, thermal, mechanical and chemical aspects. Unless otherwise specified, from here onward, the term