IEC 62153-4-10:2015

Overview

IEC 62153-4-10:2015 is an IEC international standard that specifies a double coaxial (coaxial) test method for measuring the electromagnetic compatibility (EMC) performance of feed‑throughs and electromagnetic gaskets. The method is intended to determine transfer impedance and/or screening attenuation of feed‑throughs and gaskets over a wide dynamic and frequency range (up to the transverse‑wave limit in the coaxial circuits, approximately 4 GHz). This second edition updates the 2009 version by adding a verification procedure for the measurement set‑up, expanded sample preparation guidance, and an informative annex on improving measurement certainty at very low frequencies.

Key Topics and Requirements

• Double coaxial test method: a coaxial measurement fixture adapted from the triaxial setup (IEC 62153‑4‑4) to address the specific geometry and contact issues of feed‑throughs and gaskets.
• Measured quantities:
  • Transfer impedance (ZT) - electrical coupling between primary and secondary circuits through a screen or gasket.
  • Screening attenuation (a) - attenuation of an incident electromagnetic signal through the feed‑through/gasket assembly.
• Measurement range and dynamic range: designed to test highly screened components using standard instrumentation (e.g., network analyzers) from low frequencies up to ≈4 GHz.
• Verification and sample preparation: new clause describing procedures to verify the test fixture and reduce measurement uncertainty, plus practical preparation steps for representative samples.
• Low‑frequency uncertainty control: informative annex with recommendations (e.g., grounding and isolation measures, use of ferrites) to improve measurement certainty in the very low frequency region.
• Result expression: clear definitions for reporting transfer impedance and screening attenuation and pass/fail requirements where applicable.

Applications and Who Uses It

Practical applications of IEC 62153‑4‑10:2015 include:

• Design validation and R&D for electromagnetic gaskets, conductive O‑rings, feed‑throughs and connector panels.
• Manufacturing quality control and acceptance testing to ensure consistent shielding performance.
• EMC compliance testing for enclosures, telecommunication racks, automotive and aerospace bulkhead feed‑throughs, and industrial equipment.
• Test laboratories and certification bodies seeking a standardized method to compare shielding performance across products.

Typical users: EMC engineers, test lab technicians, product designers, quality assurance teams, and certification specialists.

Related Standards

• IEC 62153‑4‑4 - shielded screening attenuation test set‑up (triaxial method) - forms the basis for the modified coaxial approach.
• IEC TR 62152:2009 - referenced for transfer function/scattering parameter definitions and background EMC theory.
• Other parts of the IEC 62153 series covering metallic communication cable test methods.

Keywords: IEC 62153‑4‑10:2015, transfer impedance, screening attenuation, double coaxial test method, EMC, feed‑throughs, electromagnetic gaskets, coaxial measurement, network analyzer, low‑frequency measurement uncertainty.