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Transient EMC Generators for Conducted Immunity Testing

Transient generators simulate electrical anomalies, or transients, for conducted immunity EMC testing. ATEC has a variety of transient generator test systems available to rent with industry-leading rates. Whether you need a generator for one specific test or one that can do them all, we can help out. Our stock of manufacturers includes Haefely, EMC Partner, Teseq, and more.

To test a device’s immunity to transients, test engineers use transient immunity test systems to reproduce anomalies in a controlled environment using waveform variation. Most testers will include modules for specific waveforms (i.e. surge, EFT, ring wave, etc.).

Generators designed for EMC tests on commercial, industrial, medical, and IT devices comply with certain test parameters in the waveforms they generate.

What are Common Transient Generator Test Standards?

Below are some of the typical commercial standards our customers need to test for. If you're not sure, it is likely IEC or EN (the same standards adapted for Europe).

IEC 61000-4-4 | Electrical fast transient & burst
IEC 61000-4-5 | Surge wave, combination wave, and telecom wave
IEC 61000-4-8 | Power frequency magnetic field
IEC 61000-4-9 | Pulse magnetic field
IEC 61000-4-10 | Damped oscillatory magnetic field
IEC 61000-4-11 | Voltage dips & interrupts
IEC 61000-4-12 | Ring wave (damped oscillatory non-repeating)
IEC 61000-4-18 | Damped oscillatory wave (DOW)
IEC 61000-4-29 | DC power voltage dips & interrupts
ANSI/IEEE C37.90.1 | Surge withstand capability for electric power relays/relay systems
ANSI/IEEE C62.41 | Surge voltages in low-voltage AC circuits

Although the tests are similar in nature, the automotive industry requires different equipment and operates under different standards. Below are some of the standards we can assist with.

ISO 7637-1 | General considerations for electrical disturbances from conduction & coupling
ISO 7637-2 | Transient conduction along supply lines
ISO 16750-2 | Electrical load testing
SAE J1113 | Vehicle components
GMW3172 | Electrical/electronic components
OEM LV 123/OEM LV 148
Other OEMs including BMW, Ford, Hyundai, Nissan, Toyota, and more

Military and aerospace transient generators operate under stricter standards than commercial and typically pertain to surges caused by indirect lightning. Below are some of the standards our customers have needed to fulfill.