BS 4417 69th Edition, February 28, 1969
Specification for Semiconductor Rectifier Equipments
Includes all amendments and changes through Reaffirmation Notice , August 15, 1981
Additional Comments: W/D S/S BY EN 60146-1-1 & EN 60146-1-3
Published By:British Standards Institution (BSI)
Applicable to rectifier assemblies, transformers, or complete equipments for use on a.c. supplies of 15 Hz to 2000 Hz and having a maximum d.c. output voltage of 5000 V. Gives details of service conditions, rating classes, temperature rises, methods of test and proposals for guarantees and acceptance tolerances.