The power phase sequence indicator circuit diagram

Published:2011-3-30 21:29:00 Author:Ecco | Keyword: power phase sequence indicator | From:SeekIC

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When operating, one port connects to one phase of power supply clamped by insulating handle, and the other port only need to touch the the other two phase of power supply, difference of brightness of the two lamps can quickly determine power sequence. To set A phase is the port of capacitance, the bright port of lamp is B phase, weak light port is C phase. Due to the influence of capacitance phase shifting, if change phase angle of any phase, the influence could make two kinds of vectors voltage be not equal to each other, the rules is always B phase vector voltage is greater than the C vector voltage.

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