I.S. EN 61557-9:2009被替代
Electrical Safety in low Voltage Distribution Systems up to 1000 v A.c. and 1500 v D.c. - Equipment for Testing, Measuring or Monitoring of Protective Measures Part 9: Equipment for Insulation Fault Location in it Systems
出版：National Standards Authority of Ireland
专家解读视频
Describes the requirements for insulation fault location systems which localize insulation faults in any part of the system in unearthed IT a.c. systems and unearthed IT a.c. systems with galvanically connected d.c. circuits having nominal voltages up to 1000 V a.c., as well as in unearthed IT d.c. systems with voltages up to 1500 V d.c., independent of the measuring principle.
SS EN 61557-9 Ed. 2 (2009) - Identical
BS EN 61557-9:2009 - Identical
NBN EN 61557-9:2009 - Identical
UNE EN 61557-9:2010 - Identical
