NEN EN IEC 61557-9:2000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：Nederlands Normalisatie Instituut
专家解读视频
Specifies 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 d.c. independent of the measuring principle.
Supersedes NEN IEC 61557-9. (08/2002)
IEC 61557-9 Ed. 1.0 - Identical
