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


Axos8 Rental - 7kV Surge, Ringwave, 5kV EFT & Coupler Pulse Generator

The Haefely Hipotronics Axos8 EMI surge generator to 7 kV Ringwave and Surge generator with 5kV EFT (optional Dips and Interrupts) and a built-in single phase coupler. A2LA accredited calibration is included in the EMC rental equipment price. This expandable Haefely product provides safe and reliable operation by using safety interlock, warning lamp and emergency stop functions helping to ensure safe use.

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.