BS EN 61557-9:2015 specifies the requirements for the insulation fault location system (IFLS) which localizes 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 1 000 V a.c., as well as in unearthed IT d.c. systems with voltages up to 1 500 V d.c., independent of the measuring principle.

IT systems are described in IEC 60364-4-41 amongst other literature. Additional data for a selection of devices in other standards should be noted.

NOTE Further information on insulation fault location can be found in the following standards: IEC 60364-4-41:2005, 411.6, and IEC 60364-5-53:2001, 531.3.


Cross References:
IEC 60068-2-1
IEC 60068-2-2
IEC 60068-2-6
IEC 60068-2-27
IEC 60364-7-710:2002
IEC 60529
IEC 60664
IEC 60721-3-1
IEC 60721-3-2
IEC 60721-3-3
IEC 61010-1:2010
IEC 61010-2-030
IEC 61010-031
IEC 61010-2-032
IEC 61326-2-2
IEC 61326-2-4
IEC 61557-1:2007
IEC 61557-8
CISPR 11
EN 60068-2-1
EN 60068-2-2
EN 60068-2-6
EN 60068-2-27
HD 60364-7-710:2012
HD 60364-7-710:2012+AC:2013
EN 60664
EN 60721-3-1
EN 60721-3-2
EN 60721-3-3
EN 61010-1:2010
EN 61010-2-030
EN 61010-2-032
EN 61010-031
EN 61326-2-2
EN 61326-2-4
EN 61557-1:2007
EN 61557-8
EN 55011
IEC 60364-4-41:2005
IEC 60364-5-53:2001
IEC 60664-1
IEC 60664-3
IEC 60947-5-1:2003
IEC 60947-5-4:2002
IEC 61140
IEC 61810-2:2011
HD 60364-4-41:2007
EN 60664-1
EN 60664-3
EN 60947-5-1:2004
EN 60947-5-4:2003
EN 61140
EN 61810-2:2011


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