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Phase and Rotation Meters Buying Guide
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Hioki PD3129 Phase and Rotation Meter

Hioki PD3129
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Non Contact Phase Rotation Meter


  • Non-Metallic Contact for Optimal Safety
  • Top "primary supply level" safety class rating for phase detectors
  • CAT III 600V design meets CE Mark qualifications.
  • Provides both visual and audible phase detection
  • Detects phase on insulated conductors
  • Auto power-off function prevents inadvertent battery discharge
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Hioki PD3129 Phase and Rotation Meter

Hioki PD3129 Phase and Rotation Meter

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Product Information

Phase and Rotation Meters For Thin Conductors

  • For Thin Conductors
  • Measurable Cable Diameter 2.4mm to 17mm
  • Safety CATIII 600 V
  • LED Phase Sequence Indication
  • CAT III 600V design
  • Visual and audible phase detection
  • Phase Detection on Insulated cables
    Auto Power Off

Non-Metal Contact Phase Detector

To resolve these issues, the new Model PD3129 clips over the outside of conductors? insulation, enabling safe and easy phase detection at any point along the conductors. Four LEDs light in sequence to clearly indicate phase relationships even in dark environments, and positive or reverse phases can be indicated both visually and by an audible beeper.

The clips attach to conductors of up to 17 mm diameter at voltages between 100 and 600 V. To avoid battery depletion worries in the event that the operator neglects to turn the detector off, an auto-power-off feature turns it off about 15 minutes after turn-on. Continuous operating time on two common AA batteries is as long as 70 hours.

No-metal-contact design For the ultimate in safety.

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.

Safe, no-metal-contact design
The no-metal-contact clips need only to be clipped to the outside of each wire’s insulation, letting you carry out phase detection work safely.


Auto power off

The flashing phase sequence lamps, arrow LED, and tone let you easily and intuitively verify the phase sequence of three-phase power supplies.


Battery check function

A flashing lamp indicates when the batteries are low so that you can avoid having the detector turn off abruptly.



Magnets for a more efficient workflow

The four magnets on the back of the phase detector allow it to be secured in place on distribution panels, significantly boosting work efficiency by freeing your hands for other tasks.



70 hours of use with two AA batteries

Two AA batteries deliver 70 hours of continuous use. This long service life means fewer troublesome battery changes. In addition, there’s no need to carry spare batteries.


What's In The Box

  • Carrying case
  • wrist strap
  • R6P batteries x 2
  • spiral tube


  PD3129-10 for Thick Conductors PD3129 for Thin Conductors
Functions Phase detection (positive and negative)
Voltage Detection
Electrostatic induction method
Clamp Diameter
(insulated wiring)
10 to 40mm 2.4 to 17mm
Voltage Range 3-phase 70 to 1000V AC
(continuous sine wave)
3-phase 70 to 600V AC
(continuous sine wave)
Frequency Range 45Hz to 66Hz
Safety CATIII 1000V, CAT IV 600V
(Anticipated Transient Overvoltage of 8000V)
(Anticipated Transient Overvoltage of 6000V)
Phase Indication Positive: 4 LEDs lit in clockwise order and 3 short beeps
Negative: 4 LEDs lit in counterclockwise order and one continuous beep
Battery Check
Ready: ON lamp lights / Battery low: ON lamp blinks
Power Supply Two “AA“ (R6P) size batteries; rated voltage: 3.0V DC; maximum rated power: 300mVA;
continuous use: approx. 70 hours (standby)
Dimensions 70W x 75H x 30D mm (2.76”W x 2.95”H x 1.18”D); Cord length: 0.7m (25.76")
Mass (incl. batteries) 240g (8.5 oz) 200g (7.1 oz)
Usage Environment Indoors, altitude up to 2000m
Operating temperature: 0 to 40°C (32 to 104°F), max. 80% rh (no condensation)
Storage Temperature: -20 to 60°C (-4 to 140°F), max. 80% rh (no condensation)
Accessories Carrying case, wrist strap, R6P batteries x 2, spiral tube

Hioki PD3129 Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Test Equipment General Attributes

Unique FeaturesNon Contact clamps measure current without wire stripping, 17mm jaw
Warranty1 YEARS
Data Logging What's This?No
Product Weight240 GRAMS (0.529 LBS)
Product Height30 IN
Product Length75 IN
Product Width70 IN
ECCN Number3A992
Country of OriginJapan



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