7.1.3 Circuits for Oscillating Impulse Voltages
For factory testing with aperiodic LI voltages according to IEC 60060-1:2010 or
IEEE St.4:1995, the inductances in the circuit are disturbing elements, but a
defined inductance Ls in the circuit establishes an oscillating circuit of this series
inductance and the load capacitances Cl. This circuit is excited by the triggered
discharging of the impulse capacitors of the generator (Fig. 7.16a). The output
voltage is a damped oscillation around the discharge curve of the impulse
capacitances of the generator. The oscillating frequency is the natural frequency