Surge & Burst/EFT Generators

Conducted immunity testing is a major requirement to attain CE marking for products. Multiple types of electrical disturbances are required to be tested and certified to pass the internal compliance standards, EFT/Burst standard EN/IEC 61000-4-4 and Surge (combo wave) standard IEC/EN 61000-4-5 are available in most standard EMI test sets made today. The EMC Shop stocks all types of Surge & Burst/EFT Generators for compliance and pre-compliance testing. Rent or buySurge & Burst/EFT Generators for individual tests or multifunction generators to complete an assortment of tests in a compact solution. Most systems can be easily upgraded to include additional tests as required.

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Transient 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 Transient Tests

Combination Wave/Surge:

• IEC/EN 61000-4-5 specifies two Combination Wave pulses: Open Circuit Voltage Short Circuit Current
• A common combination wave test is the 1.2/50 & 8/20
• Another common wave test is the 10/700 & 5/320, or otherwise known as telecom wave
• The four standard test levels , excluded of EUT: 0.5, 1, 2, 4 kV (0.25, 0.5, 1, 2 kA)

Burst/EFT:

• 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