IEC TR 61869-103-2012 PDF

Full title and description

IEC TR 61869-103:2012 — Instrument transformers — The use of instrument transformers for power quality measurement. This Technical Report provides guidance on the application of inductive and electronic instrument transformers (with analogue or digital outputs) when they are used with electrical measuring instruments for measurement and interpretation of power quality (PQ) parameters in 50/60 Hz a.c. power supply systems.

Abstract

This technical report explains how instrument transformers should be used for measuring a range of power quality parameters, including power frequency, magnitude of supply voltage and current, flicker, voltage dips and swells, interruptions, transient voltages, supply voltage unbalance, voltage and current harmonics and interharmonics, mains signalling on the supply voltage, and rapid voltage changes. It highlights performance influences (transients, harmonics, saturation, loading and connection practice) and gives practical guidance for achieving reliable PQ measurements with both inductive and electronic instrument transformers.

General information

• Status: Technical Report (IEC TR), published and in force as a guidance document.
• Publication date: 7 May 2012.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 17.220.20 (Electrical and magnetic measurements / Instrument transformers).
• Edition / version: Edition 1.0 (2012).
• Number of pages: 84 pages.

Core bibliographic and status details from the IEC publication record.

Scope

This report is applicable to both inductive and electronic instrument transformers with analogue or digital outputs used together with electrical measuring instruments to measure and interpret power quality parameters in 50 Hz and 60 Hz a.c. power supply systems. It is intended to help users understand limitations and influences of instrument transformers on PQ measurements and to provide recommendations for selection, connection, measurement practice and interpretation of results. The document focuses on measurement application guidance rather than normative performance specifications.

Key topics and requirements

• Identification of power quality parameters relevant to instrument transformer measurements (frequency, rms magnitude, flicker, dips/swells, interruptions, transients, unbalance, harmonics/interharmonics, mains signalling, rapid voltage changes).
• Guidance on how instrument transformer characteristics (accuracy classes, saturation behavior, phase displacement, frequency response) affect PQ measurements.
• Recommendations for transformer selection and connection practices to minimise measurement error during steady-state and transient conditions.
• Considerations for using electronic instrument transformers (digital outputs, bandwidth, anti-aliasing, synchronization) for PQ monitoring.
• Advice on calibration, verification, and on-site testing methods relevant to PQ measurement accuracy.
• Interpretation issues and limitations when measuring harmonics, interharmonics and fast transients with instrument transformers.

Typical use and users

Intended for power system engineers, utility PQ specialists, instrument transformer and meter manufacturers, test laboratories, commissioning teams and consultants responsible for power quality monitoring and metering. Typical uses include selecting appropriate instrument transformers for PQ monitoring installations, defining measurement setups for compliance testing or system studies, and preparing test/commissioning procedures for PQ measurement systems.

Related standards

Related documents include the broader IEC 61869 series (instrument transformers) and other power quality and measurement standards (for example standards in the IEC 61000 series and related national adoptions). National and regional adoptions/translations exist (for example DIN VDE and ÖVE/ÖNORM editions of the IEC TR). Users should consult the IEC 61869 main parts and applicable PQ measurement standards for normative measurement requirements and performance classes.

Keywords

instrument transformer, technical report, power quality, PQ measurement, voltage dips, swells, flicker, harmonic measurement, interharmonics, transient voltages, instrument transformer selection, calibration, IEC 61869.

FAQ

Q: What is this standard?

A: IEC TR 61869-103:2012 is a Technical Report from the IEC that provides guidance on the use of instrument transformers (inductive and electronic) for power quality measurement in 50/60 Hz a.c. systems.

Q: What does it cover?

A: It covers practical guidance on measuring power quality parameters (frequency, amplitude, flicker, dips/swells, interruptions, transients, unbalance, harmonics/interharmonics, mains signalling, rapid voltage changes), and how instrument transformer characteristics and installation affect those measurements.

Q: Who typically uses it?

A: Utilities, power quality engineers, meter and transformer manufacturers, test laboratories, commissioning teams and consultants involved in PQ monitoring and metering.

Q: Is it current or superseded?

A: The document was published on 7 May 2012 (Edition 1.0). The IEC record indicates stability through 2027; users should verify current national adoptions and any newer IEC publications when planning normative compliance work.

Q: Is it part of a series?

A: Yes — it is a Technical Report in the IEC 61869 family (instrument transformers) and is intended to be used alongside the normative parts of the IEC 61869 series and other relevant IEC power quality standards.

Q: What are the key keywords?

A: Instrument transformer, power quality, PQ measurement, harmonics, flicker, dips, transients, electronic instrument transformer, IEC 61869.