Centre drills for centre holes with protecting chamfer. Type B Ingestion-build-67170 devices and components covered by

devices and components covered by BS EN 61230 is based on electro-dynamic and electro-thermal effects acting during short-circuit

It is assumed that the rise of the temperature of the inner conductor when submitted to the maximum current under nominal ambient conditions does not affect the mechanical and electrical properties of the cable

BS EN 60947-5-9 is not intended to cover devices with analogue outputs

EN 50281-1-1

Rolling stock or parts of it can also be used outside the specification with reduced performance

Centre drills for centre holes with protecting chamfer. Type B Ingestion-build-67170 devices and components covered by1 Scope This International Standard specifies the dimensions of centre drills for centre holes with protecting chamfer Type B. It covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drills. The flutes can be straight or spiral at the option of manufacturer. Unless otherwise stated, these drills are right hand cutting. Annex A gives the recommended dimensions for the centre holes, Type B, which can