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IEC 61557-3:2019 ED3

Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance IEC 61557-3:2019 ED3

Publication date:   Jul 26, 2019

General information

60.60 Standard published   Jul 26, 2019

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

IEC 61557-3:2019 specifies the requirements applicable to equipment for measuring the loop impedance between a line conductor and protective conductor; between a line conductor and neutral; or between two line conductors by using the voltage drop when the circuit under test is loaded. IEC 61557-3:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) addition of equirements as regards the measurement category;
b) addition of new requirements for operating instructions;
c) alignment of the structure with that of the whole IEC 61557 series.

Life cycle

PREVIOUSLY

WITHDRAWN
IEC 61557-3:2007 ED2

NOW

PUBLISHED
IEC 61557-3:2019 ED3
60.60 Standard published
Jul 26, 2019