IEC 61557-8:2007 ED2

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 8: Insulation monitoring devices for IT systems

Publication date:   Jan 29, 2007

General information

99.60 Withdrawal effective   Dec 11, 2014

IEC

TC 85

International Standard

17.220.20   Measurement of electrical and magnetic quantities | 29.080.01   Electrical insulation in general | 29.240.01   Power transmission and distribution networks in general

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Scope

This part of IEC 61557 specifies the requirements for insulation monitoring devices (IMD) which permanently monitor the insulation resistance to earth of unearthed IT a.c. systems, for IT a.c. systems with galvanically connected d.c. circuits having nominal voltages up to 1 000 V a.c., as well as of unearthed IT d.c. systems with voltages up to 1 500 V d.c. independent from the method of measuring.

This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision.

The following changes were made with respect to the previous edition:

a) definitions complemented;

b) revision of some requirements;

c) addition of information on operating instructions;

d) sections "type tests" and "routine tests" complemented;

e) modification of Table 1;

f) addition of Annexes A and B.

The contents of the corrigendum of May 2007 have been included in this copy.

Life cycle

PREVIOUSLY

WITHDRAWN
IEC 61557-8:1997 ED1

NOW

WITHDRAWN
IEC 61557-8:2007 ED2
99.60 Withdrawal effective
Dec 11, 2014

CORRIGENDA / AMENDMENTS

WITHDRAWN
IEC 61557-8:2007/COR1:2007 ED2

REVISED BY

PUBLISHED
IEC 61557-8:2014 ED3