VOLTAGE/CURRENT SENSOR CAPABLE OF IMPROVING ASSEMBLING CHARACTERISTIC

摘要

PURPOSE: A voltage/current sensor is provided to improve an assembling characteristic by enhancing accuracy of a Rogowski coil and simplifying a support structure. CONSTITUTION: An epoxy housing(2) is installed on an upper part of a base plate(1). A bus bar(3) is installed at the epoxy housing in order to apply the first current and the high voltage. A resistor type voltage divider(110) is connected to one side of the bus bar in order to measure the voltage. A Rogowski coil(120) is installed at the other side of the bus bar in order to measure the current. An output characteristic correction unit(140) connects a variable resistor and a rated current regulation resistor to a predetermined terminal of one side of the Rogowski coil and correct the measurement accuracy by controlling a division ratio between the variable resistor and a rated current regulation resistor.