Simple phase sequence indicator

Published:2012/12/5 21:36:00 Author:Ecco | Keyword: Simple , phase sequence, indicator | From:SeekIC

As shown in figure, as long as the X, Y, Z three lines are connected to three - phase circuit, the phase sequence of three - phase alternating current can be easily seen by the quenching of the neon tube light. If neon tube is lit , X , Y , and Z are respectively connected to A, C, B power supply phases. Conversely, if the neon tube is not lit, then the X , Y, and Z are connected to power supply A , B, and C phases. 1/8W carbon film resistors can be used, and the capacitor requires that the pressure to be greater than 400V. Neon can use neon fluorescent starter.



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