IEC 61000-4-12:2017 Electromagnetic Compatibility (EMC) - Part 4-12: Testing and measurement techniques - Ring wave immunity test

IEC 61000-4-12:2017 Electromagnetic Compatibility (EMC) - Part 4-12: Testing and measurement techniques - Ring wave immunity test

EN IEC 61000-4-12 by the International Electrotechnical Commission (IEC) sets the requirements for testing an EUT (Equipment Under Test) during operational conditions to a non-repetitive damped oscillatory transients (ring wave) in low-voltage power. This phenomenon is created by switching of electrical networks and reactive loads leading to breakdown of power supply circuits. This type of waveform can also be created via lightning, which is characterized by a unidirectional waveform. This standard can be purchased at the IEC WebstoreEN IEC 61000-4-12 falls into the greater structure of EN IEC 61000 which covers broader EMC concepts.  EN IEC 61000-4-12 ring wave waveform
EN IEC 61000-4-12 defines test voltage and current waveform, ranges of test levels, test equipment, test set-up, and testing procedures. A ring wave with a defined .5μs rise time and 100kHz oscillation is determined to be typical and widely used for testing products. The verification of the test generator must meet rise time (voltage and current), oscillation frequency, decay, repetition frequency, open-circuit voltage, and short-circuit current. This standard sets testing criteria based on several different levels, more exact information is provided in the standard.  EN IEC 61000-4-12 ring wave test levels
EN IEC 61000-4-12 ring wave generators replicate the non-repetitive damped oscillatory transients (ring wave) required for this standard. Given the nature of the waveform this standard places specific requirements on EMI Test Equipment. The characteristics that are required are rise time (current & voltage), oscillation frequency, decaying, repetition frequency, open-circuit voltage, and short circuit current. We offer rental products by Teseq, Haefely,  EM Test, and Thermo-Keytek. We also provide a variety of accessories for our rental equipment allowing customers to meet a variety of requirements. These EMI ringwave products come with an A2LA accredited calibration and free technical support included with the rental.

EN IEC 61000-4-12 Ring Wave Rental Products

EN IEC 61000-4-12 - Ring Wave Test Generators - EMI Rentals


Conducted Immunity Generator Features 

      • 6kV Surge,  5kV EFT/Burst, & 7kV Ringwave & Optional Dips
      • ISO 17025 Calibration & 2 Days Free Transit
      • Built In 264v/16A AC 220V/10A DC Single Phase Coupler
      • Voltage and Current Monitoring - Front of Unit
      • Easy to Operate, Manual & Automated Test Modes
      • Front Panel Attenuated Voltage & Current Monitoring 
      • Turnkey Solution - Arrives Ready for Testing!


The Haefely Hipotronics Axos8 conducted immunity test generator allow for 6kV surge/combination wave testing, 5kV EFT/Burst, and a 7kV Ringwave (optional Dips and Interrupts are availible) and a built-in single phase coupler. This test systems is the higher voltage version of the Axos 5, including a Ringwave Function. Both Axos units have front panel monitoring ports with built in attenuation allowing for quick ability to verify waveform. Take advantage of pro-rated daily rates after the first month and quick delivery!

This Immunity Test Generator expandable functionality allows for quick and completely automated testing to the most common IEC, EN, ANSI, IEEE and UL standards. This test equipment is user friendly with manual and automated test mode and software assisted test preparation. It provides a touch screen for  efficient and effective manipulation of testing criteria to meet or a diverse set of testing needs.

This pulse generator allows for testing to EN/IEC 61000-4-4, EN/IEC 61000-4-5, EN/IEC 61000-4-12 and optional external box for testing per EN/IEC 61000-4-11 and EN IEC 61000-4-29. The Axos unit can either be operated via front panel by large colour graphic interface or remotely from the PC. This product has the ability to change testing parameters while conducting tests and is useful for monitoring and debugging function during design phase as well as compliance and pre-compliance testing.