Hioki 3198 Review: Class-A Power Quality Analyzer for Three-Phase Systems

Hioki PQ3198: A Modern Power Quality Analyzer for EV and Industrial Applications

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Overview

The Hioki PQ3198 is a next-generation power quality analyzer designed for modern electrical environments where accuracy, flexibility, and long-duration monitoring are essential. According to the datasheet, it is presented as a new and easier-to-use model with updated functions and specifications, while keeping the same physical appearance as the PW3198.

It is built for practical field use in demanding applications such as EV quick charger troubleshooting, simultaneous AC and DC measurement, and inverter power analysis. The PQ3198 helps engineers diagnose power supply issues more quickly and accurately, especially in systems where traditional measurement tools may not be enough.

What Makes the PQ3198 Different?

The PQ3198 is not simply a basic power meter. It is a specialized instrument for power quality analysis, meaning it is intended to investigate voltage disturbances, power issues, and system behavior over time. This makes it particularly useful in industries that rely on sensitive electrical equipment or use power electronics extensively.

One of its biggest advantages is the combination of AC/DC simultaneous measurement and an integrated sensor power supply function. This means flexible sensors can be powered without requiring a separate AC adapter, improving mobility and making the device easier to deploy in outdoor or restricted-access locations.

Key Features of Hioki PQ3198

• Power quality analyzer for modern industrial and EV applications
• Supports simultaneous primary AC and secondary DC measurement
• Useful for inverter power measurement and troubleshooting
• Designed to help diagnose power supply problems more efficiently
• Fundamental wave frequency range: 40 to 70 Hz
• Carrier frequency: up to 20 kHz
• Up to 9999 recorded events
• Repeated measurement period: up to 366 days
• Current effective measuring range: up to 120%
• Power display range: from 0%
• Power measurement accuracy range: up to 20 kHz
• AC/DC sensor power supply function for flexible sensors
• Automatic current sensor recognition
• DC-AC (three-phase) efficiency calculation
• PQ ONE analysis software included
• GENNECT Cross support for remote field data collection
• LAN connectivity for real-time monitoring and CSV export
• FTP server support
• Display RMS values on waveform screen
• External START/STOP input available
• Download or delete past data while recording
• Expanded multi-language support for global operation

Hioki PQ3198 Specifications

Why the PQ3198 Is Valuable

The Hioki PQ3198 is especially valuable in environments where electrical disturbances are difficult to diagnose and where long-term monitoring is required. Its improved measurement capability, extended event recording, and remote communication options make it more than just a monitoring tool — it becomes part of a predictive maintenance and troubleshooting workflow.

For companies working with EV infrastructure, power conversion systems, and modern industrial equipment, the PQ3198 offers a practical way to understand system behavior and reduce downtime.

Conclusion

The Hioki PQ3198 is a powerful and modern power quality analyzer designed for professionals who need accurate, long-duration, and application-focused measurement. With support for EV chargers, inverter systems, AC/DC measurement, extensive event recording, and advanced software integration, it stands out as a highly capable instrument for today’s electrical testing challenges.