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IEC 61000-4-13 Low Frequency Immunity

IEC 61000-4-13 Low Frequency Immunity Testing

Compatible Electronics is NVLAP-accredited for IEC 61000-4-13 Ed. 1.2 (2015) — harmonics and interharmonics including mains signalling low frequency immunity testing at our Lake Forest facility.

NVLAP Lab Code 200527-0 IEC 61000-4-13 Ed. 1.2 (2015) Lake Forest, CA

What is IEC 61000-4-13?

IEC 61000-4-13 defines test methods for evaluating immunity of equipment to harmonics, interharmonics, and mains signalling voltages superimposed on the AC power supply. These low-frequency disturbances arise from non-linear loads (variable speed drives, switching power supplies, electronic ballasts) on public power networks, as well as from powerline communication (PLC) systems that use the mains to carry data signals.

Unlike harmonic current emissions testing (IEC 61000-3-2) — which measures the harmonics a product injects into the mains — IEC 61000-4-13 tests how well equipment tolerates harmonics and interharmonics already present on the supply. This is an immunity test, not an emissions test. It is referenced by several product-family standards for equipment sensitive to power quality, including measurement equipment under IEC 61326-1 and industrial control equipment.

🔎 IEC 61000-4-13 vs IEC 61000-3-2: IEC 61000-3-2 is an emissions standard — it limits the harmonic current your product injects into the mains. IEC 61000-4-13 is an immunity standard — it tests whether your product continues to function correctly when the mains supply already contains harmonics and interharmonics. Products with switch-mode power supplies may need both: emissions testing (IEC 61000-3-2) and immunity testing (IEC 61000-4-13).

Accredited Standard Version

StandardDescriptionLocation
IEC 61000-4-13 Ed. 1.2 (2015-12): 2002+AMD1:2009+AMD2:2015 CSVHarmonics and interharmonics including mains signalling at a.c. power port — low frequency immunity tests. Current consolidated version.Lake Forest

Test Types Covered

Harmonics Immunity

Harmonic Voltage Immunity

  • Individual harmonics up to the 40th (2 kHz)
  • Grouped harmonics — frequency sweep
  • Tests equipment response to supply distortion
  • Related: IEC 61000-3-2 emissions test
Interharmonics & Mains Signalling

Interharmonic & PLC Immunity

  • Interharmonics — frequencies between harmonics
  • Mains signalling at frequencies 120 Hz – 3 kHz
  • Relevant to powerline communication (PLC) systems
  • Smart meter and AMR infrastructure compatibility
Products

When IEC 61000-4-13 Is Referenced

  • IEC 61326-1 measurement equipment
  • Industrial control and automation equipment
  • Power conversion equipment (inverters, UPS)
  • Smart home and building automation products

Related Services & Resources

EMC-EMI Testing Services Harmonic Current Testing Voltage Flicker Testing Conducted Immunity Testing EFT Burst Immunity Testing IEC 61000-4-11 Voltage Dips EN 61000-6-1 Generic Immunity EN 61000-6-2 Industrial Immunity IEC 61326-1 General Requirements Measurement & Lab Equipment 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 61000-4-13 at Compatible Electronics

NVLAP Lab Code 200527-0 — Low frequency harmonics immunity testing at Lake Forest, CA.

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