Overview
IEC 61000-4-10:2016 - "Electromagnetic compatibility (EMC) – Part 4-10: Testing and measurement techniques – Damped oscillatory magnetic field immunity test" defines immunity requirements, test methods, and recommended test levels for equipment exposed to damped oscillatory magnetic disturbances encountered in medium‑voltage (MV) and high‑voltage (HV) substations. This second edition (2016) is a technical revision that replaces earlier editions and amendments.
Key topics and technical requirements
- Scope and objective: Establishes the test purpose and applicability to electrical and electronic equipment used in MV/HV substations.
- Test levels: Specifies the range of recommended field and current levels for damped oscillatory magnetic immunity (see the standard’s Table 1 for defined levels).
- Test equipment & instrumentation:
- Damped oscillatory wave generator design and performance criteria.
- Standard induction coils (1 m × 1 m and 1 m × 2.6 m variants) and their characteristics.
- Current and field measurement methods and calibration procedures.
- Calibration and uncertainty: Normative methods for induction coil calibration and informative guidance on measurement uncertainty and uncertainty budgets.
- Test setups: Procedures for table‑top, floor‑standing and in‑situ testing, including immersion and proximity methods, reference ground plane considerations and field distribution verification.
- Test procedure & evaluation: Laboratory reference conditions (climatic and electromagnetic), step‑by‑step execution, result evaluation criteria and reporting requirements.
- Informative annexes: Coil calibration, field distribution, selection of test levels, frequency characteristics, MU considerations and 3D simulation guidance.
Practical applications - who uses IEC 61000-4-10
- EMC test laboratories performing immunity testing for substation equipment.
- Manufacturers of protection relays, switchgear, control systems, meters and communication devices destined for MV/HV substations.
- Utilities and asset owners validating equipment resilience to transient magnetic disturbances in substations.
- Design and compliance engineers defining EMC requirements, acceptance criteria and mitigation measures.
- Certification bodies verifying compliance with international EMC requirements for power‑system equipment.
Practical uses include verifying immunity of control and protection electronics to damped oscillatory magnetic fields, specifying test setups for type testing, and informing design changes to improve robustness.
Related standards
- IEC 61000‑4 series (EMC testing and measurement techniques) - complementary immunity tests such as:
- IEC 61000‑4‑8 (power‑frequency magnetic fields)
- IEC 61000‑4‑9 (impulse magnetic field)
These related methods help form a complete EMC test strategy for power‑system equipment.
Keywords: IEC 61000-4-10, damped oscillatory magnetic field, EMC immunity test, induction coil, substation equipment testing, measurement uncertainty, EMC test methods.
Open preview (PDF)Electromagnetic compatibility (EMC) - Part 4-10: Testing and measurement techniques - Damped oscillatory magnetic field immunity test
