Single-phase three-wire, three-phase three-wire voltage and analysis phase shifter

摘要

An object of the present invention without requiring skill, anyone can be performed in a single connection the voltage and Ken-sho of AC circuit of easily and reliably single-phase three-wire, three-phase three-wire, to provide a voltage-detection phase shifter. A detects the phase rotation of three-phase, and Ken-sho circuit which displays the positive phase or reverse phase, branches the three-phase from phase circuit, and measure each phase voltage, along with the display, another set of The measured ground phase and three-phase of each phase voltage to ground by switching the switch, the voltage measuring circuit for display, and a power supply circuit for supplying power to these circuits built into the box body 13, and the inspection on the sides of the box body may be provided phase vessel of a single-phase, three-phase terminal 1, 2, 3, and voltage circuit of the ground phase of the terminal 8, knob 10c of the switch of the phase between the-ground voltage, and the power switch 15 of the power supply circuit, respectively, In addition, the display panel 14 of the box body 13, three of the digital display 7a of the positive phase or reverse phase indicator 5a and voltage circuit of the test phase circuit is provided. .BACKGROUND