APPARATUS AND METHOD FOR TESTING MAIN CIRCUIT PHASE DETECTION

摘要

PROBLEM TO BE SOLVED: To provide an apparatus and a method for testing a main circuit phase detection which can easily judge a polarity confirmation and can prevent lead wires from being connected by mistake. SOLUTION: A main circuit application charger 6 applies different testing voltages between two phases of a three-phase AC power source circuit. A main circuit checker 7 selectively measures a testing voltage of different voltage values applied between the two phases by the charger 6. Since the applied different voltage values are displayed as measured values, its continuity can be simply judged. COPYRIGHT: (C)2003,JPO