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Electrical Fast Transient (EFT)/Burst generators are required for conducted immunity testing standards, such as IEC/EN 61000-4-4. Electrical Fast Transient EFT/Burst events are small electrical surges caused by a local source, typically an electrical switch, it can occur within a product itself as well as from the data or power lines in the facility.
The EMC Shop stocks most all types of EFT/Burst equipment for compliance and pre-compliance testing. Rent or buy stand alone Electrical Fast Transient (EFT)/Burst generators or try a multifunction generator to add Surge, Power Fail and other electrical disturbance tests.
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Electrical Fast Transient EFT/Burst Generators are typically benchtop, but heavy equipment. When doing testing on three phase power lines systems usually require much larger coupling/decoupling networks which substantially increase system size. EM test environments with ground planes with connections to earth are required to safely use transient generators.
Common Electrical Fast Transient EFT/Burst Tests
A typical burst has a single pulse rise time/duration of 5 ns/50 ns from a source impedance of 50 Ω
Bursts of 15 ms duration with a repetition rate of 5 kHz (or 100 kHz) are applied every 300 ms
The standard defines four basic test levels, all with repetition frequencies 5 or 100 kHz
The level voltage depends on equipment being tested:
Power ports: 0.5 , 1, 2, 4 kV
Signal and control ports: 0.25, 0.5, 1, 2 kV