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IEC 61000-4-9 Impulse Magnetic Field

IEC 61000-4-9 Impulse Magnetic Field Immunity Testing

Compatible Electronics is NVLAP-accredited for IEC 61000-4-9 (2016) — impulse magnetic field immunity testing for equipment exposed to high-energy transient magnetic fields from switching and fault events at our Lake Forest facility.

NVLAP Lab Code 200527-0 IEC 61000-4-9 (2016) Lake Forest, CA

What is IEC 61000-4-9?

IEC 61000-4-9 defines the test methods and equipment for evaluating the immunity of electrical and electronic equipment to damped oscillatory magnetic fields produced by switching operations, fault events, and lightning on power systems. These short-duration, high-amplitude magnetic field pulses can induce voltages in equipment enclosures, cables, and PCBs — causing data corruption, component damage, or system malfunction.

IEC 61000-4-9 is related to — but distinct from — the power frequency magnetic field immunity test (IEC 61000-4-8) which covers continuous 50/60 Hz magnetic fields. IEC 61000-4-9 specifically addresses the transient impulse magnetic field phenomenon. Both tests are available at Compatible Electronics' Lake Forest facility.

🔎 IEC 61000-4-9 vs IEC 61000-4-8: IEC 61000-4-8 tests continuous power-frequency (50/60 Hz) magnetic fields at 3–30 A/m. IEC 61000-4-9 tests short-duration impulse magnetic fields — high-amplitude damped oscillatory waveforms from switching or fault events — at levels up to 100 A/m (Level 3) or 300 A/m (Level 4). Many product standards reference both. See our IEC 61000-4-8 magnetic field testing page for the continuous power-frequency test.

Accredited Standard Version

StandardDescriptionLocation
IEC 61000-4-9 (2016)Electromagnetic compatibility (EMC) — Part 4-9: Testing and measurement techniques — Impulse magnetic field immunity test. Current edition.Lake Forest

Test Levels & Applications

Standard Test Levels

IEC 61000-4-9 Immunity Levels

  • Level 1: 1 A/m peak — protected environments
  • Level 2: 10 A/m peak — light industrial
  • Level 3: 100 A/m peak — industrial environments
  • Level 4: 300 A/m peak — heavy industrial / substation
  • Level X: special per product standard
Products & Standards

Where IEC 61000-4-9 is Referenced

  • IEC 61326-1 — measurement & lab equipment
  • IEC 61326-2 — specific lab equipment
  • Industrial control and protection relays
  • Power system monitoring equipment
  • Substation and switchgear control equipment

Related Services & Resources

EMC-EMI Testing Services IEC 61000-4-8 Magnetic Field ESD Immunity Testing Surge Immunity Testing EFT Burst Immunity Testing Radiated Immunity Testing EN 61000-6-2 Industrial Immunity IEC 61326-1 General Requirements IEC 61326-2 Lab Equipment Measurement & Lab Equipment ISM Equipment Learning Page CE Marking EMC Testing Pre-Compliance Testing EMC Design Consulting ISO/IEC 17025 Accreditation ILAC MRA Recognition EMC Testing Cost Guide Common EMC Failures

Test to IEC 61000-4-9 at Compatible Electronics

NVLAP Lab Code 200527-0 — Impulse magnetic field immunity testing at Lake Forest, CA.

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