IEC 61557-10:2013

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 10: Combined measuring equipment for testing, measuring and monitoring of protective measures

IEC 61557-10:2013 specifies the requirements for combined measuring equipment which combines into one piece of apparatus, several measuring functions or methods of testing, measuring or monitoring according to the respective parts of IEC 61557. This second edition cancels and replaces the first edition published in 2000. This edition constitutes a technical revision. (electrical safety, combined measuring equipment for testing, measuring or monitoring of protective measures)
This publication is to be read in conjunction with IEC 61557-1:2007.

Sécurité électrique dans les réseaux de distribution basse tension de 1 000 v c.a. et 1 500 v c.c. - Dispositifs de contrôle, de mesure ou de surveillance de mesures de protection - Partie 10: Appareils combinés de contrôle, de mesure ou de surveillance de mesures de protection

La CEI 61557-10:2013 établit les exigences relatives aux appareils combinés de mesure qui réunissent en un seul appareil plusieurs fonctions de mesures ou méthodes de contrôle, de mesure ou de surveillance, selon les parties respectives de la CEI 61557. Cette deuxième édition annule et remplace la première édition parue en 2000. Cette édition constitue une révision technique. (sécurité électrique, appareils combinés de contrôle, de mesure ou de surveillance de mesures de protection)
Cette publication doit être lue conjointement avec la CEI 61557-1:2007.

General Information

• Status: Published
• Publication Date: 28-Apr-2013
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 29.080.01 - Electrical insulation in general
• ICS: 29.240.01 - Power transmission and distribution networks in general
• Technical Committee: TC 85 - Measuring equipment for electrical and electromagnetic quantities
• Drafting Committee: WG 8 - TC 85/WG 8
• Current Stage: DELPUB - Deleted Publication
• Start Date: 04-Oct-2024
• Completion Date: 28-Oct-2022

Relations

• Revises: IEC 61557-10:2000 - 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 10: Combined measuring equipment for testing, measuring or monitoring of protective measures
• Effective Date: 05-Sep-2023
• Revised: IEC 61557-10:2024 - 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 10: Combined measuring equipment for testing, measuring and monitoring of protective measures
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61557-10 ®
Edition 2.0 2013-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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 10: Combined measuring equipment for testing, measuring or monitoring
of protective measures
Sécurité électrique dans les réseaux de distribution basse tension de
1 000 V c.a. et 1 500 V c.c. – Dispositifs de contrôle, de mesure ou de
surveillance de mesures de protection –
Partie 10: Appareils combinés de contrôle, de mesure ou de surveillance de
mesures de protection
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IEC 61557-10 ®
Edition 2.0 2013-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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 10: Combined measuring equipment for testing, measuring or monitoring

of protective measures
Sécurité électrique dans les réseaux de distribution basse tension de

1 000 V c.a. et 1 500 V c.c. – Dispositifs de contrôle, de mesure ou de

surveillance de mesures de protection –

Partie 10: Appareils combinés de contrôle, de mesure ou de surveillance de

mesures de protection
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX J
ICS 17.220.20; 29.080.01; 29.240.01 ISBN 978-2-83220-757-4

– 2 – 61557-10  IEC:2013
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Requirements . 6
4.1 General . 6
4.2 Marking and pictogram . 7
5 Marking and operating instructions . 7
6 Tests . 8
Bibliography . 9

Table 1 – Extraneous overvoltage withstand capability . 6

61557-10  IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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 10: Combined measuring equipment for testing,
measuring or monitoring of protective measures

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61557-10 has been prepared by IEC technical committee 85:
Measuring equipment for electrical and electromagnetic quantities.
This second edition cancels and replaces the first edition published in 2000. This edition
constitutes a technical revision.

– 4 – 61557-10  IEC:2013
The text of this standard is based on the following documents:
FDIS Report on voting
85/442/FDIS 85/451/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part of IEC 61557 is to be used in conjunction with Part 1.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61557-10  IEC:2013 – 5 –
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 10: Combined measuring equipment for testing,
measuring or monitoring of protective measures

1 Scope
This part of IEC 61557 specifies the requirements for combined measuring equipment which
combines into one piece of apparatus, several measuring functions or methods of testing,
measuring or monitoring according to the respective parts of IEC 61557.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61557-1, 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 1:
General requirements
IEC 61557-2, 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 2:
Insulation resistance
IEC 61557-3, 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 3:
Loop impedance
IEC 61557-4, 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 4:
Resistance of earth connection and equipotential bonding
IEC 61557-5, 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 5:
Resistance to earth
IEC 61557-6, 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 6:
Effectiveness of residual current devices (RCD) in TT, TN and IT systems
IEC 61557-7, 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 7:
Phase sequence
IEC 61010-2-030:2010, Safety requirements for electrical equipment for measurement, control,
and laboratory use – Part 2-030: Particular requirements for testing and measuring circuits

– 6 – 61557-10  IEC:2013
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61557-1,
IEC 61557-2, IEC 61557-3, IEC 61557-4, IEC 61557-5, IEC 61557-6 and IEC 61557-7 as well
as the following terms and definitions apply.
3.1
combined measuring equipment
equipment that combines, into one piece of apparatus, several measuring functions or
methods of testing, measuring or monitoring, some or all of which are in accordance with
other parts of IEC 61557
3.2
extraneous overvoltage
voltage applied to the terminals of the combined measuring equipment to test the overvoltage
withstand capability
4 Requirements
4.1 General
4.1.1 The following requirements in addition to those given in all relevant parts of IEC 61557
shall apply.
4.1.2 No hazard shall arise for the user when the highest extraneous overvoltage according
to the respective parts of this document (see Table 1) is accidentally applied to each
combination of tests and measurement terminals with every combination of function and range
settings, even though some of these functions are not themselves covered by IEC 61557
Parts 2 to Parts 7.
4.1.3 Terminals that are clearly identifiable as not test or measurement terminals and that
will not retain the terminals of specified probes or accessories need not be tested.
The duration time shall be the longest possible indicated in the respective parts of
IEC 61557.
Table 1 – Extraneous overvoltage withstand capability
Part of IEC 61557
2 3 4 5 6 7
Insulation Loop Protective Earth RCD Phase
bonding resistance sequence
Extraneous 1,2 × U 1,2 × U 1,2 × U 1,2 × U 1,2 × U 1,2 × U
N 0 0 0 0 0
overvoltage
10 s continuous continuous continuous continuous continuous
and duration
and and
time
1,1 × phase- 1,1 × phase-
to-phase to-phase
voltage voltage
1 min 1 min
NOTE 1 U is the voltage referenced to earth (see IEC 61557-1:2007 , 3.3a).
NOTE 2 U is the nominal output voltage (see IEC 61557-1:2007, 3.1 and IEC 61557-2:2007 , 3.1).
N
—————————
IEC 61557-1:2007, 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 1: General requirements
IEC 61557-2:2007, 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 2: Insulation resistance

61557-10  IEC:2013 – 7 –
4.1.4 If parts of the combined measuring equipment are defective after the extraneous
overvoltage is applied, the defect shall be clearly indicated. Indications and displayed values
shall not lead to erroneous interpretations of safe or unsafe situations or conditions.
The indication shall be visible for the user when the instrument is in normal position.
4.1.5 When the extraneous overvoltage is applied, protective components or protective
circuits within the measurement equipment may be activated. The activation of protective
components or circuits in equipment for measuring or testing insulation resistance according
to IEC 61557-2 shall be indicated, if the operation of the equipment is impaired. Protective
components or circuits shall have sufficient voltage- and current-breakability for the expected
overload current.
4.2 Marking and pictogram
When the combined measuring equipment bears one of the following marking or pictogram,
the applied extraneous overvoltage can be reduced to a voltage of 1,1 times phase-to-phase
voltage:
a) Marking
DO NOT USE IN DISTRIBUTION SYSTEMS
WITH VOLTAGES HIGHER THAN . V.

This marking shall be written in the corresponding country language.
The value of the voltage shown on the marking shall be 1,1 times the maximum expected
phase-to-phase voltage.
b) Example of pictogram for a 500 V a.c. system

The value of the voltage shown on the marking shall be 1,1 times
the maximum expected phase-to-phase voltage
IEC  892/13
Combined measuring equipment bearing one of the markings of a) or pictograms of b) shall
withstand the above specified overvoltage for 1 min without any defect. The test configuration
shall be according to 4.1.2, protective devices may be activated according to 4.1.5.
If the combined measuring equipment includes an insulation resistance measuring or testing
function, this function shall also fulfill the overvoltage requirements according to IEC 61557-2.
5 Marking and operating instructions
The requirements specified in the respective parts of IEC 61557 shall apply. If the
requirements of 4.2 are applicable, the marking shall be clearly readable in the position of
normal use.
If a pictogram according to 4.2 is used, the meaning of the relevant pictogram shall be clearly
explained in the user manual.
– 8 – 61557-10  IEC:2013
6 Tests
In addition to the tests specified in the respective parts of IEC 61557, the following tests in
Clause 6 shall be performed:
– the voltage withstand capability for the combined measuring equipment shall be type
tested
...