Field Instruments

The Hioki PD3259-50 Digital Phase Detector is a high-precision, advanced phase detection instrument designed for safe and accurate analysis of three-phase electrical systems.

Featuring a non-metal contact design, this device allows users to perform measurements on insulated cables without direct exposure to live conductors, significantly enhancing safety in industrial environments.

In addition to phase sequence detection, the PD3259-50 provides three-phase voltage measurement, frequency measurement, phase loss detection, and ground phase prediction, making it a powerful diagnostic tool for engineers and technicians.

With its digital display, high accuracy, and optional Bluetooth connectivity, it enables efficient data logging, reporting, and analysis for modern electrical maintenance.

Key Features

• Non-contact phase detection (no metal contact required)
• Measures three-phase voltage (line-to-line & line-to-ground)
• Detects phase sequence (positive/reverse)
• Identifies missing/open phase conditions
• Ground phase prediction capability
• Frequency measurement function
• High-accuracy digital LCD display
• Optional Bluetooth communication (Z3210 adapter)
• Suitable for insulated cables (Ø6 mm to 30 mm)
• Robust design with industrial-grade protection

Technical Specifications

General Information

• Model: PD3259-50
• Type: Digital Phase Detector

Electrical Measurement

• Voltage Range: 90.0 V to 520.0 V AC (3-phase)
• Accuracy: ±2.0% rdg ±8 dgt
• Frequency Range: 45 Hz to 66 Hz
• Frequency Accuracy: ±0.5% rdg ±1 dgt

Functional Capabilities

• Phase sequence detection (positive/reverse)
• Missing phase detection
• Ground phase prediction
• 3-phase voltage measurement
• Frequency measurement

Measurement Target

• Applicable to:
  • Covered cables
  • Metal portions (non-shielded cables)
• Cable Diameter: Ø6 mm to 30 mm

Display & Indication

• Digital LCD with backlight
• Displays:
  • Phase sequence
  • Voltage values (VAB, VBC, VCA)
  • Frequency
  • Unbalance rate

Safety & Build

• Safety Rating: CAT IV 600 V
• Protection: IP54 (dust & splash resistant)
• Compliance: EN61010, EN61326 Class A

Mechanical Specifications

• Dimensions: 84 × 146 × 46 mm
• Weight: Approx. 590 g
• Cable Length: 50 cm

Power Supply

• Battery: LR6 (AA) × 4
• Operating Time: Approx. 5 hours

Included Accessories

• Carrying case (C0203)
• Batteries (AA ×4)
• Color clips (multiple colors)
• Spiral tube
• Instruction manual

Optional Accessories

• Magnetic strap (Z5020)
• Wireless adapter (Z3210 for Bluetooth connectivity)

Applications

• Industrial electrical system diagnostics
• Motor installation and troubleshooting
• Three-phase power quality analysis
• Maintenance of distribution systems
• Detection of phase imbalance and faults
• Field inspection and commissioning

How It Works

1. Attach Clips – Clamp onto insulated cables
2. Power On – Device detects signals safely
3. Measure – Reads voltage, frequency, and phase data
4. Analyze – Displays sequence, imbalance, and faults
5. Export (Optional) – Transfer data via Bluetooth

Why Buy from FieldInstruments.lk?

• Genuine Hioki measurement instruments
• Competitive pricing in Sri Lanka
• Fast island-wide delivery
• Trusted supplier for industrial test equipment
• Expert technical support and after-sales service

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk