What is ring wave generator and how to perform its test?

Non-repeating damped oscillatory waveforms, such as ring wave transients, are used to mimic immunity testing. Conducted susceptibility, or EMC testing, is a component of conducted immunity. To produce such transients, a ring wave generator is used.
For low-voltage cables used in homes and factories, ring waves can be made to simulate the electrical spikes that a device or system might experience.
A ring wave transient is generated in the field by one of a variety of electrical problems. A common source of conducted EMI, which is temporary energy that flows through an electrical grid from where lightning strikes, is indirect lighting.
Electrical network switching is another possible source of ring waves, which may result in short-circuits to devices linked to the same grid when sudden circuit changes occur. This may lead to transients if the insulation deteriorates or is damaged in any way over time.

Ring wave testing
The IEC 61000-4-12 test standard pertains to the immunity criteria and testing methodologies for low-voltage power, control, and signal lines from public and private networks to non-repetitive damped oscillatory transients (ring wave test).
IEC 61000-4-12 tests are done on all electrical and electronic equipment made for home, business, or industrial use, as well as equipment for power stations or substations. These tests set the immunity requirements and provide a standard reference for lab testing.
An IEC61000-4-12, GB/T17626.12, and ANSI52.41/45 ring wave generator is fully compliant with these standards for modeling the electrical network, power supply of reactive load, the control line switch, as well as monitoring the ring wave of the low voltage cable terminal equipment induced by disconnection of the power circuit, fault and insulation failure, or lightning stroke. It is commonly used in electronic equipment.
IEC61000-4-5 and GB/T17626 are two standards. Specifications are fully met by the surge generator, which is built to those specifications. There are several applications for it in a broad range of industries, including industrial control equipment, home appliances, medical equipment, communications equipment, and more.

How to perform a ring wave test
1. As a first step, make sure that the voltage circuits are powered up to the greatest possible nominal voltage. One meter is used to define the cable length.
2. Then you may read the active and reactive SUM registers with excellent resolution. A pass/fail assessment will be conducted with the use of these notes later.
3. A basic AC voltage waveform at 0°, 90°, 180°, and 270° angles must be used for all subsequent testing. This is known as our “ring wave.”
4. Every minute at each set phase angle, one positive and one negative transient must be applied, for a total of ten transients.
5. Each of the following tests will take 40 minutes to complete. Three-phase, four-wire meters are used in these experiments.
If you want to perform this test accurately, then LISUN provides the best ring wave generator.

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