CONNECTION METHOD FOR CURRENT POWER SUPPLIES TO THREE-PHASE ALTERNATING CURRENT POWER SUPPLY

摘要

PROBLEM TO BE SOLVED: To provide an alternating current power supply cable which can be connected without breaking a phase balance of a three-phase alternating current power supply when carrying out connection by extracting two phases from the three-phase alternating current power supply for conversion to direct current power supplies, and a connection method for the direct current power supplies to the three-phase alternating current power supply.;SOLUTION: Wires 11A is arranged between two connectors 12A and 12B of a three pole structure by crossing wires for two phases of wires 11 for three phases, and an outgoing line 13 is connected to one of the crossed wires 11A and one remaining uncrossed wire 11B. By this, when direct current power supplies 2 are used, the direct current power supplies 2 are alternately connected to different two phases of the three-phase alternating current power supply 1, and each direct current power supply 2 is connected to the three-phase alternating current power supply 1 in a well balanced manner. As a result, since a phase of an alternating current waveform of the three-phase alternating current power supply hardly shifts, and complete balance can be provided particularly when an even number of two or more direct current power supplies is used, there is substantially no phase shift of the alternating current waveform of the three-phase alternating current power supply 1.;COPYRIGHT: (C)2006,JPO&NCIPI