NBN 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：Belgian Standards
专家解读视频
TO BE USED IN CONJUNCTION WITH IEC 61557-1. Gives 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 unearthed IT d.c. systems with voltages up to 1 500 V d.c., independent of the measuring principle.
DIN EN 61557-9 (2009-11) - Identical
NF EN 61557-9:2009 - Identical
I.S. EN 61557-9:2009 - Identical
BS EN 61557-9:2009 - Identical
SN EN 61557-9:1999 - Identical
UNE EN 61557-9:2001 - Identical
SS EN 61557-9 Ed. 1 (2000) - Identical
SS EN 61557-9 Ed. 2 (2009) - Identical
UNE EN 61557-9:2010 - Identical
