HIOKI PD3259-50 Digital Phase Detector
Benefits of the HIOKI PD3259-50 Digital Phase Rotation Meter With 3-Phase Voltage Measurement Functionality
- Non-contact measurement by just clipping onto covered cables - high level of safety.
- Measure 3-phase voltage and detect phase sequence simultaneously.
- Option/version with wireless adaptor for data transfer to mobile device - free app.
HIOKI PD3259-50 Digital Phase Detector
The HIOKI PD3259-50 is a non-contact voltage detection and measurement device to conduct on-site electrical work as part of renovations and expansions of manufacturing plants and buildings. The PD3259-50 is a digital phase detector that lets you to measure 3-phase voltage and detect phase sequence simultaneously by just clipping onto covered cables, ensuring absolutely no contact with metal parts for maximum safety.
- Non-contact digital phase detector to measure 3-phase voltage and detect phase sequence simultaneously.
- CAT IV 600 V rated.
- With wireless adaptor Z3210 (accessory or bundled):
Easily transfer measurement data to your smartphone or tablet by using the free app GENNECT Cross or to an Excel file.
Check the unbalance rate and vector diagram in the free app GENNECT Cross. - Non-metallic contact voltage detection and testing by simply clipping onto wire insulation.
- Phase detection check and line-to-line voltage inspection at the same time.
- Easy and intuitive phase detection check with backlight and buzzer.
- Ideal for work certification photos, offering simultaneous display of phase sequence and 3-phase voltage.
Model Overview
| Model | HIOKI PD3250-50 |
| Detection functions | Positive phase, negative phase (3-phase 3-wire, 3-phase 4-wire), open phase, prediction of ground phase (3-phase 3-wire) |
| Measurement parameters | 3-phase AC voltage (line-to-line voltage and voltage to ground), frequency; voltage measurement accuracy: ±2.0% rdg. ±8 dgt.; frequency measurement accuracy: ±0.5% rdg. ±1 dgt.; response time: 3 s or less, display update rate: 500 ms |
| Measurement targets | Covered cables, metal portions (use on shielded cables not supported); 3-phase 90.0...520.0 VAC (45...66 Hz) |
| Diameter of measurable conductors | Finished outer diameter 6...30 mm |
| Maximum rated voltage to earth | 600 VAC (CAT IV) |
| Environmental protection | Main unit (excluding voltage sensors) IP54 (EN60529) dustproof and waterproof |
| Other functions | Hold function, backlight, buzzer, auto power-off, low battery warning, drop proof (on concrete, 1 m/1x) |
| Power supply | 4x AA alkaline batteries (LR6); max. rated power 3 VA, continuous operating time 5 h (backlight off, standby state, without Z3210) |
| Dimensions (mm) | 84 x 146 x 46; 590 g (incl. batteries), cord length 0.5 m |
Included: PD3250-50 device, 4x AA alkaline batteries (LR6), instruction manual, carrying case C0203, color clips (2x white, 2x red, 2x blue, 2x yellow), 1x spiral tubes (black).
Version PD3259-90 bundled with wireless adaptor Z3210.
Information on product safety:
Manufacturer:
HIOKI E.E. Corporation, 81 Koizumi Ueda, Nagano 386-1192/JPN
www.hioki.com
(EU branch Germany)







