IEC 61557-10:2024 PDF

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

First page of standard IEC 61557-10:2024

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Title (English):

IEC 61557-10:2024

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 29
Publication date:: October 4, 2024
Edition:: IEC IS 61557 edition 3 version 1
ICS:: 17.220.20

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Description (English):

This part of IEC 61557 specifies the requirements for measuring equipment that combines several measuring functions or methods of testing, measuring or monitoring, that are in accordance with the respective parts of IEC 61557, into one piece of apparatus. Measuring equipment which combines measuring functions or methods of testing, measuring or monitoring covered by the respective parts of IEC 61557 with those not covered by the respective parts of IEC 61557 is also within the scope of this document.

Technical details

Technical committee: TC 85 - Measuring equipment for electrical and electromagnetic quantities
SKU: IEC 61557-10:2024

Abstract

Overview

IEC 61557-10:2024 is Part 10 of the IEC 61557 series addressing combined measuring equipment used for testing, measuring and monitoring protective measures in low-voltage distribution systems (up to 1 000 V AC and 1 500 V DC). The standard specifies safety, performance and marking requirements for devices that integrate multiple measuring functions (for example insulation, loop/earth/phase checks and RCD tests) into a single instrument. It also covers combined devices that mix IEC 61557 functions with other measurement functions.

Key topics and requirements

Scope and definition: Defines “combined measuring equipment” and ensures compatibility with the other parts of the IEC 61557 series.
Safety under extraneous overvoltage: Specifies the required extraneous overvoltage withstand capability for terminals and combinations of functions (Table 1). Examples in the document include test levels like 1.2 × U for AC extraneous overvoltage with defined durations (e.g., 10 s) and reduced levels (1.1 × phase-to-phase) when appropriate markings/pictograms are present.
Performance after stress: Requirements on functional performance and absence of user hazards after application of specified overvoltages.
Design and terminals: Clarifies which terminals must be tested (exemptions for clearly non-test terminals and terminals accessible only with a tool) and addresses reasonably foreseeable misuse.
Marking and instructions: Requires clear marking and pictograms indicating maximum distribution system voltage and other safety information so users can apply the correct test settings.
Test considerations: Test procedures and test source characteristics (updated to reflect expected short‑circuit currents and measurement categories per IEC 61010-2-030).

Applications and users

IEC 61557-10:2024 is directly relevant for:

Manufacturers of portable and bench combined measuring instruments who must demonstrate compliance and safe operation.
Electrical test equipment designers integrating multiple protective-measure tests into one device.
Electrical safety engineers, installers and maintenance technicians who select and use combined testers for commissioning and periodic verification of low-voltage systems.
Certification and conformity assessment bodies that verify product compliance with the IEC 61557 series.

Practical benefits include simplified field workflows (one instrument for multiple tests), clear safety guidance for mixed-function devices, and improved user protection against accidental overvoltage.

Related standards

IEC 61557-1:2019 (General requirements)
IEC 61557 Parts 2–7 (insulation, loop, earth, RCD, phase sequence, etc.)
IEC 61010-2-030 (safety requirements for test/measurement circuits)

Keywords: IEC 61557-10:2024, combined measuring equipment, extraneous overvoltage, low voltage distribution systems, protective measures, testing measuring monitoring.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and requirements

Scope and definition: Defines “combined measuring equipment” and ensures compatibility with the other parts of the IEC 61557 series.
Safety under extraneous overvoltage: Specifies the required extraneous overvoltage withstand capability for terminals and combinations of functions (Table 1). Examples in the document include test levels like 1.2 × U for AC extraneous overvoltage with defined durations (e.g., 10 s) and reduced levels (1.1 × phase-to-phase) when appropriate markings/pictograms are present.
Performance after stress: Requirements on functional performance and absence of user hazards after application of specified overvoltages.
Design and terminals: Clarifies which terminals must be tested (exemptions for clearly non-test terminals and terminals accessible only with a tool) and addresses reasonably foreseeable misuse.
Marking and instructions: Requires clear marking and pictograms indicating maximum distribution system voltage and other safety information so users can apply the correct test settings.
Test considerations: Test procedures and test source characteristics (updated to reflect expected short‑circuit currents and measurement categories per IEC 61010-2-030).

Applications and users

IEC 61557-10:2024 is directly relevant for:

Manufacturers of portable and bench combined measuring instruments who must demonstrate compliance and safe operation.
Electrical test equipment designers integrating multiple protective-measure tests into one device.
Electrical safety engineers, installers and maintenance technicians who select and use combined testers for commissioning and periodic verification of low-voltage systems.
Certification and conformity assessment bodies that verify product compliance with the IEC 61557 series.

Related standards

IEC 61557-1:2019 (General requirements)
IEC 61557 Parts 2–7 (insulation, loop, earth, RCD, phase sequence, etc.)
IEC 61010-2-030 (safety requirements for test/measurement circuits)

Keywords: IEC 61557-10:2024, combined measuring equipment, extraneous overvoltage, low voltage distribution systems, protective measures, testing measuring monitoring.

IEC 61557-10:2024 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications and users

Related standards

Related standards

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