Hioki’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 PD3259 Digital Phase Detector lets you to measure three-phase voltage and detect phase sequence simultaneously by just clipping onto covered cables, ensuring absolutely no contact with metal parts for maximum safety.

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

Detection functions Positive phase, negative phase (Three-phase 3-wire, Three-phase 4-wire), open phase, prediction of ground phase (Three-phase 3-wire)
Measurement parameters Three-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 Three-phase 90.0 to 520.0 V AC (45 to 66 Hz)
Diameter of measurable conductors Finished outer diameter: 6 to 30 mm (0.24 to 1.18 in)
Maximum rated voltage to earth 600 V AC (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/ 1 time)
Power supply AA alkaline batteries (LR6) ×4, Maximum rated power: 3 VA, Continuous operating time: 5 hours (Backlight off, standby state)
Dimensions and mass 84 mm (3.31 in)W × 146 mm (5.75 in)H × 46 mm (1.81 in)D, 590 g (20.8 oz, including batteries), cord length: 0.5 m (1.64 ft)
Accessories AA alkaline batteries (LR6) ×4, Instruction manual ×1, Carrying case C0203 ×1, Spiral tubes (black ×1, red ×2, blue ×2, yellow ×2)

Key Features

• World’s first non-metallic contact voltage detection and testing

• Simply clip 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

Application Notes