Some Aspects of Lightning Surges on Power Systems and Their Suppression

The paper points out that lightning surges contain an infinite band of frequency components and for this reason, the behavior of a system to surges depends on its impedance characteristics over a wide range of frequencies. A capacitive-inductive suppression device is suggested and design details and test results given. This device is most effective for short-duration steep-sided surges. At present, it seems practicable for lower voltage circuits but if cheaper capacitors can be constructed, it also could be used for higher voltages.