BS EN 61347-2-2. Lamp controlgear - Part 2-2. Particular requirements for d.c. or a.c. supplied electronic step-down convertors for filament lamps Ingestion-build-224916 Revised guidance on the properties

Revised guidance on the properties of gauzes used in the water retention test

The aim of BS EN 12107 series is to provide best industry requirements that ensures safe and reliable use of smoke and heat control systems

The method is kept as close as possible to the ISO 10140[4] series and yields the same results within the range of uncertainty and within the range of application

It provides examples of calculations for thread gauge dimensions on the large end diameter (Annex A) and draws attention to the limitations of the gauging system specified (Annex B)

Upset (resistance butt) welding

BS EN 61347-2-2. Lamp controlgear - Part 2-2. Particular requirements for d.c. or a.c. supplied electronic step-down convertors for filament lamps Ingestion-build-224916 Revised guidance on the properties