◆Phase sequence determination:
Connect the DC5V power supply to the tester, and connect the detected three-phase voltage to the "excitation On the U, V, W terminals of "Magnetic Output Voltage", if the voltage is between AC20-450V, the display screen will directly display "Positive Phase Sequence" or "reverse phase sequence"; if the voltage is not enough, press the "stop" button once, then press the start button (or use the battery to charge the excitation coil< /span>Power off), let go after the voltage rises above AC50V. The display will directly display "positive phase sequence" or "reverse phase sequence";
◆Excitation control phase sequence phase determination:
Connect the DC5V power supply to the tester, and connect the three-phase voltage output by the excitation transformer to the tester On the U, V and W terminals of the "excitation variable output voltage" of the tester, connect the generator's motorterminal voltage A and C to the tester's "motor". terminal voltage” on the U and W terminals. If the voltage of each phase is between AC20-450V, the display will directly showExcitation transformer output is "positive phase sequence" or "reverse phase sequence". At the same time, "Phase Offset Angle"indicates the angle at which "Excitation Transformer Output AC Phase Voltage" lags behind "Machine Terminal AC Voltage"degrees. If the voltage of each phase is lower than AC20V at this time, press the "stop" button, then Then press the start button (or charge the excitation coil with a battery), and let go after the voltage rises to AC50V or more. The display will show whether the excitation transformer output is "positive phase sequence" or "reverse phase sequence". At the same time, "Phase Offset Angle" indicates the angle by which "Excitation TransformerOutput AC Phase Voltage" lags behind "Machine Terminal AC Voltage". If the excitation transformer is Yd11 type, the "phase offset angle" should be about 330 degrees, otherwise it may be a wiring error. If the excitation transformer is YY type, "Phase Offset Angle" should be about 0 degrees or 360 degrees, otherwise it may be a wiring error. If you use our company's brushed excitation controller, no matter whether the wiring is wrong, you can Directly set the detected "phase offset angle" into the 20th item "Phase Offset" of the excitation controller settings, then the encourage operation.
