The Megger PSI-700 Phase Sequence Indicator 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-700 is simple to use. The operator connects the 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.

Specifications

Voltage: For use on 90 to 700 volts, 50/60 hertz

Indicating Lamps: Five lamps are provided and identified as to function. One indicates ABC clockwise rotation, one indicates CBA counter-clockwise rotation and three lamps are identified as A phase, B phase and C phase.

Leads: Color-coded 40-inch (101.6 cm) leads with insulated clips are permanently attached to the instrument.

Construction: Model PSI-700 has no moving parts, batteries or binding posts and does not require a power source. It is housed in a rugged, insulated enclosure which is easily hand-held.