Megger PSI700A Phase Sequence Indicator

The Megger PSI700A 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. Model PSI700A is simple to use. The operator connects three 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.

Key Features of the Megger PSI700A

The PSI700A is straightforward to operate. To determine the phase sequence, users simply connect three leads to the electrical system. The indicator uses lamps to display the phase rotation; one lamp lights up to indicate ABC clockwise rotation, while another lights up for CBA anti-clockwise rotation. This immediate visual feedback makes it easy for technicians to understand the system’s configuration quickly.

The device also helps verify the presence of all phase voltages. When all phases are correctly connected and functioning, three lamps will illuminate, confirming that the full phase system is operational. If a phase is open or missing, the PSI700A promptly indicates this fault by lighting up only one lamp, which helps in quickly identifying and diagnosing issues in the system.

Megger PSI700A Specifications

• Voltage: For use on 90 to 600 volts, 3ø, 50/60 hertz

INPUT

• Voltage: 600VAC CATIII
• Phase : 3
• Frequency: 50 / 60 Hz
• OPERATING TEMPERATURE : 0 – 40 C
• STORAGE TEMPERATURE : 0 – 40 C
• DIMENSIONS : 5.1H x 3.6W x 1.6D in.(130H x 91W x 41D mm)

NET WEIGHT

• An instrument only : 14.4 oz (420 grams)

CARRYING CASE

Model PSI700A is provided with a canvas carrying case as standard equipment

• Dimensions : 7.0H x 3.75W x 4.0D in.(178H x 95W x 102D mm)

CONFORMANCE STANDARDS

• Safety: EN 61010-1 CATIII 600V