SSH EN 61557-9:2009

Siguria elektrike në sistemet e shpërndarjes deri ne 1 000 V të rrymës alternative dhe deri në 1500 të rrymës së vazhduar - Pajisje për prova, matje dhe monitorim të masave mbrojtëse - Pjesa 9: Pajisje për gjetjen e vendndodhjes të dëmtimit të izolimit në sistemet IT

Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 9: Equipment for insulation fault location in IT systems

Scope

IEC 61557-9:2009 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 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. This second edition cancels and replaces the first edition published in 1999. It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - scope, normative references and terms and definitions complemented; - revision of requirements, marking and operating instructions and Clause 6; - revision of Table 1; - addition of Annexes A, B and C.

Related directives

Directives related to this standards.