IEC 62153-4-16:2021

Overview

IEC 62153-4-16:2021 is an International Electrotechnical Commission (IEC) standard specifying test methods for metallic cables and other passive components, focusing on electromagnetic compatibility (EMC). This part extends the frequency range for key EMC measurements-allowing transfer impedance tests to be extrapolated to higher frequencies and screening attenuation tests to lower frequencies-using the triaxial set-up as described in IEC 62153-4-3, IEC 62153-4-4, and IEC 62153-4-15. The standard is specifically designed for homogeneous cable screens, where transfer impedance is proportional to cable length.

This second edition replaces the first edition (2016) and features significant technical updates, including a conversion formula suitable for any load condition, enhancing applicability across varied real-world scenarios.

Key Topics

• Triaxial Set-Up: Defines standardized procedures for using the triaxial set-up to measure surface transfer impedance and screening attenuation over a broader frequency range, increasing flexibility and accuracy.
• Transfer Impedance Extrapolation: Establishes methods to extrapolate measured transfer impedance to higher frequencies, crucial for evaluating cable performance in advanced communication and EMC environments.
• Screening Attenuation Extension: Permits screening attenuation tests to be extended to lower frequencies, enabling comprehensive assessment of shielding effectiveness.
• Load Condition Independence: Implements a new conversion formula that supports any device under test (DUT) load conditions, expanding test versatility.
• Measurement Consistency: Offers guidance on ensuring accurate results by considering the dielectric properties and impedance characteristics of both inner and outer circuits in the test set-up.

Applications

IEC 62153-4-16:2021 has practical value for:

• Cable Manufacturers: Supports the design and quality control of metallic communication cables, coaxial cables, and shielded cables by enabling reliable EMC measurement over wider frequency ranges.
• Test and Certification Labs: Standardizes extended-range EMC testing, thereby facilitating product certification and compliance with global requirements.
• Network and System Integrators: Assists in specifying cables and passive components that ensure robust EMC performance for data transmission, broadcasting, and industrial automation.
• Research and Development: Useful for R&D teams seeking accurate data regarding cable shielding and transfer impedance effects across an expanded frequency spectrum.

By adhering to IEC 62153-4-16, organizations can confidently extrapolate test data, improving decision making for cable selection and shielding effectiveness in both legacy and next-generation high-frequency applications.

Related Standards

• IEC 62153-4-3: Details the triaxial method for surface transfer impedance measurements of metallic communication cables as part of EMC evaluation.
• IEC 62153-4-4: Covers screening attenuation measurements using the triaxial method, supporting compliance for cable shielding.
• IEC 62153-4-15: Describes advanced test methods for measuring transfer impedance and screening (or coupling) attenuation using triaxial cells.
• IEC TS 62153-4-1: Provides technical specifications for EMC test methods, with relevant clauses referenced in IEC 62153-4-16.
• IEC 61156 Series: Relates to cables for digital communications, often used in conjunction with EMC test methods outlined in the 62153 series.

Summary

IEC 62153-4-16:2021 delivers essential guidance on extending EMC test frequencies for metallic cables and passive components. By enabling reliable extrapolation of transfer impedance and screening attenuation measurements in the triaxial set-up, the standard serves manufacturers, laboratories, and engineers seeking to ensure robust cable shielding across broad frequency ranges. Compliance with this standard ensures best practices and international harmonization in EMC testing for cables used in modern electronic and communication systems.