IEC 60146-4 Replaced
IEC 60146-4:1986
Semiconductor convertors. Part 4: Method of specifying the performance and test requirements of uninterruptible power systems
Applies to electronic indirect a.c. convertor systems with electrical energy storage means in the d.c. link. Defines a complete uninterruptible power system in terms of its performance and not in terms of individual sub-system functional units.
CHFÂ 200.-
This publication has been replaced by:
IEC 62040-3:1999