Field Instruments

The Hioki PD3129-10 Phase Detector is a compact and highly reliable non-contact phase rotation tester designed for safe phase sequence detection in three-phase electrical systems.

Using static induction technology, the PD3129-10 allows users to detect phase rotation without direct metal contact, significantly improving safety when working with live systems.

Its easy-to-read LED arrow indication, audible alerts, and rugged industrial design make it ideal for electricians and technicians performing motor installation, maintenance, and troubleshooting.

Key Features

• Non-contact phase detection (no metallic contact required)
• Detects phase sequence (positive / reverse)
• Clear LED arrow indication for easy visualization
• Audible buzzer alerts for phase direction
• Suitable for thick insulated cables (Ø7 mm to 40 mm)
• Magnetic base for hands-free operation
• Compact and lightweight design
• Designed for safe industrial use

Technical Specifications

General Information

• Model: PD3129-10
• Type: Non-contact Phase Detector

Electrical Measurement

• Voltage Range: 70 V to 1000 V AC
• Frequency Range: 45 Hz to 66 Hz
• Detection Method: Static induction (non-contact)

Functional Capabilities

• Phase sequence detection (positive / negative)
• Live line check
• Suitable for insulated cable testing

Measurement Target

• Cable Type: Insulated wires only
• Cable Diameter: Ø7 mm to 40 mm

Indication System

• Visual:
  • Green LED arrow → Positive phase (clockwise)
  • LED sequence rotation indicates phase direction
• Audible:
  • Intermittent buzzer → Positive phase
  • Continuous buzzer → Reverse phase

Safety & Build

• Safety Rating:
  • CAT IV 600 V
  • CAT III 1000 V
• Magnetic back for panel mounting

Mechanical Specifications

• Dimensions: 70 × 75 × 30 mm
• Weight: Approx. 240 g
• Cable Length: ~0.7 m

Power Supply

• Battery: AA (LR6) × 2
• Battery Life: Up to 200 hours
• Auto Power Off function

Included Accessories

• Carrying case
• Strap
• Spiral tube
• Batteries (AA ×2)
• Instruction manual

Applications

• Motor installation and phase verification
• Electrical maintenance and troubleshooting
• Industrial power system inspection
• Phase sequence checking in distribution panels
• Safe testing of insulated cables

How It Works

1. Clip Sensors – Attach clamps to insulated cables
2. Power On – Device detects electric field safely
3. Observe LEDs – Arrow and LEDs show phase direction
4. Listen Alerts – Buzzer confirms phase status
5. Diagnose – Identify correct or reverse phase

Why Buy from FieldInstruments.lk?

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

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