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Hioki is a leading manufacturer of electrical measuring instruments and test equipment, providing precision solutions for power analysis, battery testing and industrial maintenance. Its portfolio includes digital multimeters, clamp meters, power analysers, battery testers, data loggers and insulation testers. Trusted by engineers, electricians and researchers worldwide, Hioki products support applications in energy, automotive, electronics manufacturing and electrical maintenance.
Non-Contact Digital Phase Rotation Tester with Integrated Voltmeter
Digital phase sequence tester with integrated voltmeter and non-contact voltage clamps for safe one-step checks of phase sequence, line-to-line voltage, frequency, and missing-phase detection, CAT IV 600 V, IP54, optional Bluetooth connectivity (Z3210 required)
• 90 to 520 V AC measurement range
• For insulated conductors from 6 mm to 30 mm diameter
• CAT IV 600 V safety rating
• IP54 dust/water resistant housing
• Safe, non-contact voltage detection
• Phase sequence detection with true line-to-line voltage measurement
• Installation and maintenance of three-phase wiring and equipment
• Troubleshooting phase errors, supply interruptions, and missing phases
• Verification of EV charging stations and infrastructure
• Commissioning and inspection of machinery and plant systems
The PD3259-50 is a compact digital phase rotation tester for three-phase systems. Unlike basic devices that only indicate phase sequence, it also measures true line-to-line voltages, frequency, and missing phases. This provides technicians with reliable data to quickly identify supply issues and prevent potential equipment damage.
The non-contact voltage clamps simply clip around insulated conductors, eliminating the need to expose live parts. This makes phase and voltage checks quicker, safer, and possible even in situations where direct electrical contact with the conductor would normally require higher qualifications or additional protective measures.
Rugged and field-ready, the instrument is rated CAT IV 600 V and IP54 for operation in demanding environments. For documentation and analysis, the optional Z3210 Bluetooth adapter can be added to connect the PD3259-50 to smart devices or a PC. Measurements can then be logged via HIOKI’s GENNECT Cross app on Android or iOS devices or transferred directly to Excel using the instrument’s HID (Human Interface Device) function.
The PD3259-50 was designed and is manufactured in Japan at HIOKI’s own design center and factories, ensuring the highest standards of lasting precision, reliability, and quality.
• PD3259-50 Phase Rotation Meter
• C0203 Carrying Case
• 4 × LR6 alkaline batteries
• Instruction manual / Safety notes
• Spiral tubes (black)
• Color-coded cable markers (white, red, blue, yellow; 2 each)
• Z3210 Wireless Adapter
• PD3259-90 Phase Rotation Meter
• PD3129 Phase Sequence Tester
• PD3129-10 Phase Sequence Tester
• C0203 Carrying Case
• Z5020 Magnetic Strap
