Abstract
A measuring system based on a resistive divider using a copper sulfate (CuSO4 solution) has been developed to measure high-voltage impulses with rise times of several tens of nanoseconds. The response and temperature characteristics of the resistive divider have been studied. The divider has excellent response characteristics (<; 1-ns theoretical rise time) and good immunity from interference from a Marx generator and spark-gap switch. Stray parameters of the resistive divider are theoretically calculated, and their influences on the square-wave response are studied by Alternative Transients Program/ ElectroMagnetic Transient in DC System simulations. The measuring system is shielded using coaxial construction techniques. The experimental results show that it is capable of maintaining the output impulse of the Marx generator with rise time of 13 ns and amplitude of 170 kV.
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