How to Use the Hioki Digital Phase Detector PD3259

In the past, four steps have been necessary in order to check a 3-phase power circuit: one set of measurements to check the phases with a phase detector, and three line-voltage measurements (one for each phase) made with a tester. The Digital Phase Detector PD3259 replaces this process with a single, no-metal-contact measurement step that can be made simply by affixing three clamp sensors. The instrument quickly displays the phase detection results and three phase voltage values.

*This video depicts measurement of a 3-phase power circuit in Japan.
The instrument can also be used to measure power circuits in other countries, for example 3-phase/4-wire circuits.

Phase detector + tester functionality: At-a-glance, no-metal-contact phase detection and line voltage measurement in 3-phase circuits

With the PD3259, you can check both phase order and line voltages simply
by clipping the sensors to the outside of the circuit’s insulated wires.
No-metal-contact measurement means maximum safety.

Simultaneous display of phase order, ground phase, and 3-phase voltage values

Phase order, ground phase, and 3-phase voltage values are displayed at the same time on a large, easy-to-see display that can be used as-is to create photographs to document electrical installations.

Easy-to-understand visual and aural communication of judgment results

The PD3259 indicates phase order (normal/reversed) judgment results
via the color of its backlight and a beeping sound.

[Normal phase order]
Backlight: Green
Beeping: Intermittent tone

[Reversed phase order]
Backlight: Red
Beeping: Continuous tone