High-voltage test equipment simulating the capacitance of the distribution system to ground

摘要

PURPOSE:To improve the reliability of an electricity receiving facility and, at the same time, make smooth the total facility equipment test operation after receiving electricity by performing the switching test of a plurality of power supplied in the high-voltage electricity reception/transformation facility of a demand facility side before receiving electricity formally and at the same time easily judging the operation of a ground directional relay and drastically improving the reliability in the judgment. CONSTITUTION:An input power supply voltage is boosted via a transformer 1, the output power supply is supplied to a plurality of testing circuits (output terminals 3 and 4), at the same time, grounding capacitors 2a and 2b which are electrically connected to a high-voltage output side are provided, and the switching test and the artificial grounding test of a plurality of power supplies are executed before receiving electricity formally by switching a switch S16 and a switch S17 and turning on or off a terminal 5.