IEC 62586-2-2021 PDF

Full title and description

St IEC 62586-2-2021 — Power quality measurement in power supply systems — Part 2: Functional tests and uncertainty requirements. This consolidated edition contains the Part 2 requirements and the 2021 amendment clarifying functional test procedures and measurement uncertainty criteria for power quality (PQ) instruments and devices embedding PQ functions.

Abstract

IEC 62586-2:2017 consolidated with Amendment 1 (2021) specifies functional test procedures and uncertainty requirements for instruments that measure, record and optionally monitor power quality parameters in electric power supply systems. It applies to devices using measurement classes defined in IEC 61000-4-30 (commonly class A and class S) and to product standards that embed such PQ measurement functions. The consolidated text includes technical revisions and additions introduced by the 2021 amendment.

General information

• Status: Active / Consolidated edition ( IEC 62586-2:2017 + Amendment 1:2021 ).
• Publication date: 15 September 2021 (consolidated edition including AMD1:2021).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 17.220.20 (Measuring relays and protection).
• Edition / version: Edition 2.1 — consolidated edition (IEC 62586-2:2017 + A1:2021).
• Number of pages: 617 pages (consolidated electronic format).

Scope

Specifies functional tests and measurement uncertainty requirements for power quality instruments whose measuring methods are defined as class A or class S in IEC 61000-4-30. The document applies to standalone PQ instruments and to devices embedding PQ functions (for example digital fault recorders, revenue meters, MV/HV protection relays), and is applicable to single-, split- and 3‑phase AC power supply systems at 50 Hz or 60 Hz. The 2021 amendment provides clarifications and additional test procedures that supplement the 2017 edition.

Key topics and requirements

• Functional test procedures for PQ parameters (frequency, voltage magnitude, dips, swells, interruptions, flicker, harmonics/interharmonics, unbalance, rapid voltage changes, signalling voltages, etc.).
• Measurement uncertainty requirements and guidance for conformity assessment of PQ measurements.
• Requirements for instruments implementing class A or class S measurement methods defined by IEC 61000-4-30.
• Test procedures and acceptance criteria for current and voltage measurement chains used in PQ monitoring.
• Application notes addressing use of the standard within other product standards that embed PQ functions.

Typical use and users

Used by manufacturers of power quality analyzers and meters, test laboratories, utilities, system integrators, metrology institutes and standards writers who need to verify functional performance and quantify measurement uncertainty of PQ instruments or PQ functions embedded in other devices.

Related standards

Key related documents include IEC 62586-1 (general requirements for power quality instruments), IEC 61000-4-30 (measurement methods and class definitions for power quality), and regional/adopted versions such as EN 62586-2:2017/A1:2021. The standard is often referenced by product standards for meters, protection relays and fault recorders that include power quality functions.

Keywords

power quality, PQ measurement, measurement uncertainty, functional tests, IEC 62586-2, IEC 61000-4-30, class A, class S, rapid voltage change, harmonics, flicker

FAQ

Q: What is this standard?

A: IEC 62586-2:2017 consolidated with Amendment 1 (2021) defines functional tests and uncertainty requirements for instruments that measure power quality parameters in electrical power systems.

Q: What does it cover?

A: It covers test procedures, acceptance criteria and measurement uncertainty for PQ parameters (voltage, frequency, harmonics, flicker, dips, swells, interruptions, rapid voltage changes, signalling voltages, etc.) and applies to class A and class S measurement methods per IEC 61000-4-30.

Q: Who typically uses it?

A: Manufacturers of PQ instruments and meters, independent test laboratories, utilities, metrology institutes, and authors of product standards embedding PQ functions. These users apply the standard for type testing, product development, and conformity assessment.

Q: Is it current or superseded?

A: The consolidated edition (IEC 62586-2:2017 with Amendment 1:2021) is the current published consolidation of Part 2; the 2017 edition superseded the 2013 edition and the 2021 amendment updates the 2017 text. Users should verify if any subsequent amendments or corrigenda have been published after 2021.

Q: Is it part of a series?

A: Yes — IEC 62586 is a multi-part series for power quality measurement in power supply systems; Part 1 covers general requirements and Part 2 covers functional tests and uncertainty requirements. Other parts address complementary topics.

Q: What are the key keywords?

A: Power quality, measurement uncertainty, functional tests, class A, class S, IEC 61000-4-30, rapid voltage change, harmonics, flicker.