Design and Characterisation of 1 kV Multirange Resistive Voltage Divider

Abstract

The paper describes design of a new multirange AC resistive voltage divider (RVD) for input voltage up to 1 kV for measurement of LF power and power quality parameters. Two prototypes were constructed and characterised in terms of temperature dependence, power dependence of gain and phase errors and AC transfer. The new RVD reached phase change below 0.5 μrad and gain change below 8 μV/V at 53 Hz for voltage step from 100 V to 1 kV with time constant below 2.5 minutes. Voltage dependence and DC ratio stability are under evaluation.