Hioki PD3129
Non-Contact Phase Rotation Meter

  • Simply clip clamps onto wire insulation
  • Green LED arrow clearly shows phase direction, perfect for visual reports
  • Rotating LED indicator shows the phase sequence for a 3-phase power supply at a glance
  • Intermittent beeps signal positive phase; continuous tone signals reverse phase
  • Magnetic base allows the instrument to be secured on a distribution panel
  • For Phase Rotation Meter with larger clamps, See: PD3129-10
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Hioki PD3129 Shown
Product Information
Datasheet 1.28 MB PDF
Manual 353 KB PDF
PDF HelpPDF Help

The Hioki PD3129's non-contact voltage detection and measurement technology places efficiency and safety as priority considerations with the goal of protecting customers that need to conduct on-site electrical work as part of renovations and expansions of manufacturing plants and buildings.

The Hioki PD3129 is a non-contact phase rotation meter that detects the phase of electrical current flow within insulated wires without using metallic contact voltage clips. The green arrow indicates normal phase, which can be useful for visual reports that document the proper completion of electrical work.

Easy to Read Arrow Indicator
No Metal Contact Design For the Ultimate In Safety

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Include in visual reports

A green arrow indicates normal phase, which can be communicated in an easy-to-understand manner by including the phase detector in photographs used to document the proper completion of electrical work.
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Safe, non-metal-contact design

The non-metal-contact clips need only to be clipped to the outside of each wire’s insulation, letting you carry out phase detection work safely.


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Intermittent sound


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Continuous sound

LED + clear audio for easy verification

The flashing phase sequence lamps, arrow LED, and tone let you easily and intuitively verify the phase sequence of three-phase power supplies.
Ordering Information
Model Description Buy Now Price
PD3129 Hioki PD3129 Non-Contact Phase Rotation Meter Buy Now $239.95
Related Products
PD3129-10 Hioki PD3129-10 Non-Contact Phase Rotation Meter with Large Jaws Buy Now $269.95
Included Accessories
  • 1 - Carrying Case
  • 1 - Strap
  • 1 - Spiral Tube
  • 1 - Manual
  • 2 - R6P (AA) Manganese Batteries