Interactions between two dividers used in simultaneous comparison measurements [of power system impulses]

A revised international standard for the measurement of lightning and front-chopped lightning impulses is presently under consideration. This standard states that the accuracy of these measuring systems is to be determined by comparison to reference systems maintained by appropriate national laboratories. Investigations have been made of the interactions between two systems configured for simultaneous measurements and of methods for minimizing these interactions. Step responses were measured for different configurations and a model developed to predict divider response. Simultaneous measurements were made of full and chopped lightning impulses using different divider systems to determine the effects of divider interactions on such measurements