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  • Course and parameters of lightning voltages and currents

    In the chart shown below there are typical courses and parameters of lightning impulse voltages and currents, which occur in conductive parts of landscape, building constructions and metal lines in consequence of lightning stroke (taking in account influences caused by galvanic, inductive or capacitive coupling).

    The typical values of lightning impulse voltages and currents, which occur in conductive parts of landscape, building constructions and metal lines

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    Testing current impulse in the waveform of 10/350μs is most often used for simulation of currents infiltrating into power lines and electric equipment in consequence of galvanic coupling. In case of inductive and capacitive coupling the voltage and current impulses are considerably shorter. The examination of interfering lightning effects in relation to inductive surges (currents) in consequence of inductive coupling is most often carried out by the testing current impulses in the waveform of 8/20μs. The examination of lightning effects in relation to interfering surges (currents) in consequence of capacitive coupling is similarly carried out by the testing voltage impulses in the waveform of 1,2/50μs.

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