IEC 62044-2:2005

Overview

IEC 62044-2:2005 is an international standard published by the International Electrotechnical Commission (IEC) that provides comprehensive guidance on measuring methods for the magnetic properties of soft magnetic cores at low excitation levels. This part of the IEC 62044 series specifically addresses magnetic cores mainly made from magnetic oxides or metallic powders, which are commonly utilized in inductors and transformers within telecommunication equipment and various electronic devices.

The standard is essential for manufacturers, engineers, and researchers involved in specifying and testing magnetic cores used under low magnetic excitation-where accurate characterization of magnetic and electric core properties is critical. It offers standardized procedures that ensure measurement consistency, reliability, and comparability for core performance evaluation.

The edition consolidates amendments and corrigenda up to May 2021, reflecting the most current and practical measurement practices.

Key Topics

• Scope and Definitions: Establishes terminology and the scope of magnetic core materials, focusing on soft magnetic materials operated at low excitation levels.

• Measuring Methods: Detailed guidance on methods for measuring:

  • Magnetic permeability and inductance
  • Losses at low magnetic flux density, including hysteresis and eddy current losses
  • Temperature coefficients affecting permeability
  • Total harmonic distortion (THD) measurements relating to magnetic core performance
  • Normalized impedance, parallel conductivity, and insertion loss of cores

• Test Conditions & Equipment:

  • Environmental conditions for accurate measurement
  • Handling and assembly of cores, especially multi-part cores
  • Magnetic conditioning and disaccommodation to ensure repeatable results
  • Use of test coils and proper winding techniques with specified parameters

• Measurement Procedures:

  • Step-by-step instructions for inductance and loss tests
  • Procedures to measure permeability changes under direct current magnetic fields
  • Methods to evaluate Curie temperature and its effect on magnetic properties

• Quality Assurance: Ensures standardized assessment of soft magnetic materials, enhancing reliability in telecom and electronic paper device applications.

Applications

IEC 62044-2:2005 is crucial in industries where soft magnetic cores are fundamental parts, including:

• Telecommunication Equipment: Designing inductors and transformers that operate with low excitation for signal processing and power management.

• Electronic Devices: Optimizing magnetic components in circuits requiring precise magnetic properties at low levels of excitation for efficiency and stability.

• Material Characterization: Developing new magnetic materials and powders with superior magnetic performance tailored for low-level magnetic excitation use.

• Quality Control and Compliance: Establishing uniform testing standards for manufacturers to verify core material performance, supporting product certification and international trade.

• Research and Development: Facilitating consistent test conditions conducive to innovative magnetic core material development in academia and corporate R&D facilities.

Related Standards

IEC 62044-2 complements other standards in the IEC 62044 series and related magnetic materials standards, including:

• IEC 62044-1: Measurement methods for magnetic cores at medium and high excitation levels.

• IEC 60404 Series: Methods for measuring magnetic properties of various magnetic materials under different testing conditions.

• IEC 60034 Series: Standards covering rotating electrical machines, which often use magnetic cores and require precise magnetic property measurements.

• ISO/IEC Standards: Related documentation on electrical and electronic component testing that support harmonized global approaches.

Adhering to IEC 62044-2:2005 helps ensure that magnetic core measurements meet international benchmarks, enhancing product interoperability and performance across global markets.

Keywords: IEC 62044-2, soft magnetic materials, magnetic cores, low excitation measurement, magnetic permeability, inductance measurement, magnetic losses, total harmonic distortion, telecommunication inductors, transformer cores, core testing standard, magnetic property measurement, IEC standards.