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


UCS 500N7 Rental - EM Test EFT to 5.5kV, Surge to 7kV and 100kHz Ring to 6kV, Built-in Single Phase Power Coupler

The EM Test UCS500N7 is an EMC Immunity Test equipment is an all in one box for testing EFT to 5.5kV, Surge to 7kV and 100kHz Ringwave to 6 kV, with built-in single phase coupler and software. This test equipment provides optional Dips and Interrupts testing with the V4780 S2 external variac. The UCS500N7 includes a built-in CDN for single phase it can be extended for testing three-phse DUT's by means of automatically controlled external coupling network up to 100A. 

This Immunity Test Generator can be operated via the front panel or by remote via the built-in USB or GPIB interface. Fail inputs allow control an ongoing test sequences based on the status of the DUT. Monitoring outputs (BNC) are offered for easy signal measurement and verification. This EMI test equipment provides a fully compliant that goes to levels beyond common testing requirements.

The UCS500n7 includes many reprogrammed test routines ideal for testing to EN/IEC 61000-4-4, EN/IEC 61000-4-5, EN/IEC 61000-4-11, EN/IEC 61000-4-12, CEMark, ANSI/IEEE C62.41 cat. B, EN IEC 61000-6-1, and EN IEC 61000-6-2. This product also includes both pre-programmed standard tests and a quick start menu allowing for parameters to be changed on-line during the test to evaluate the susceptibility level of an individual DUT. 


EM Test CNV504 - Dataline Coupler

EMTest CNV504N1.3 coupling/decoupling networks for unshielded  unsymmetrical interconnection signal/data lines. Surge pulses or Ringwave pulses are applied to unshielded unsymmetrical interconnected lines by means of standalone coupling/decoupling networks for 4 signal/data lines.

CNV 504 N1.3 combines three different applications; coupling of Surge pulse via capacitor or gas arrestor and coupling of Ringwave pulses via capacitor being required by EN IEC 61000-4-5 and/or EN IEC 61000-4-12. The required coupling mode, Differential or Common, can easily be selected by means of a simple jumper.

In accordance with EN IEC 61000-4-5 and EN IEC 61000-4-12 pulses are coupled via different coupling elements such as capacitors or gas arrestors depending on the characteristics of the line signals.