category: electrician's testers
the megger psi-700a is a rugged, lightweight instrument used to determine the phase sequence or phase rotation of a three-phase system. it will also detect and identify an open phase.
the psi-700a is simple to use. the operator connects thre leads to the system and a lamp will instantly indicate either abc clockwise rotation or cba counter-clockwise rotation. three lamps will light to indicate that all phase voltages are present. if a phase is open, only one lamp will light and identify the open phase.
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