Verification Parameter fast damped oscillatory wave
This phenomenon is representative of switching of isolators in HV / MV open-air stations, and is particularly
related to the switching of HV bus-bars, as well as of background disturbances in industrial plants.
Verification as per IEC 61000-4-18:
Open circuit
V peak 250V – 4000V ±10 %
Rise time first peak T1 5ns ±20 %
Oscillating frequency 3 MHz, 10 MHz, 30 MHz ±10 %
Decaying of peak 5 > 50% of peak 1
Decaying of peak 10 < 50% of peak 1
Repetition rate 5000/s ±10 %
Burst duration 3 MHz 50 ms ±20 %
10 MHz 15 ms ±20 %
30 MHz 5 ms ±20 %
Output Impedance 50Ω ±30 %
Short circuit
Rise time first peak T1 3 MHz < 330 ns
10 MHz < 100 ns
30 MHz < 33 ns
Osc. current frequency 3 MHz, 10 MHz, 30 MHz ±30 %
Decaying of peak 5 > 25 % of peak 1
Decaying of peak 10 < 25 % of peak 1
I peak 5 A to 80 A ± 20 %
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