Standard

NEK IEC 61557-9:1999

Sept 1999 Withdrawn

Note: This standard has a new edition: NEK IEC 61557-9:2023

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Language English

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Abstract

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 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. This part is to be used in conjunction with IEC 61557-1.

Document information

Standard from NEK
Published: 24 September 1999
Withdrawn: 12 January 2009
Edition: 1.0
Version: 1
Document type: NAT
ISBN:

ICS 25.040.40
National Committee NEK/NK85

Product Relations

Adopted from: IEC 61523-1:2012 ED2
Replaced by: NEK IEC 61557-9:2009
Adopted from: IEC 61557-9:1999

NEK IEC 61557-9:1999

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NEK IEC 61557-9:2023

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