Power quality problems are often difficult to solve because the most important events are not always visible during a short inspection. Voltage dips, interruptions, harmonics, flicker, inrush current, transient events, and frequency fluctuations may happen only under certain load conditions. For industrial facilities, these problems can lead to equipment malfunction, nuisance tripping, overheating, production downtime, or unexplained failures.
That is why choosing the right power quality analyzer matters. A good analyzer should not only record voltage and current, but also help maintenance teams identify when the event happened, what changed in the electrical system, and whether the issue is related to load behavior, power supply quality, harmonics, or transient disturbances.
For industrial troubleshooting, two strong options from HIOKI are the PQ3198 Power Quality Analyzer and the PQ3100 Power Quality Analyzer. Both are designed for field power quality measurement, but they are best suited for different levels of troubleshooting.
When to Choose the HIOKI PQ3198
The HIOKI PQ3198 is the better choice when the application requires advanced power quality analysis, higher accuracy, standards-based verification, and detailed event capture. HIOKI positions the PQ3198 as a power quality analyzer for monitoring and recording power supply anomalies, including voltage drops, flicker, harmonics, and other electrical issues.
For demanding industrial environments, the PQ3198 is especially useful when troubleshooting problems that may involve fast transient events, high-order harmonics, inverter-related noise, or compliance reporting. According to HIOKI, the PQ3198 supports IEC 61000-4-30 Edition 3 Class A measurement, high accuracy and continuous gapless recording, supraharmonic measurement up to 80 kHz, transient voltage measurement up to 6000 V peak, and IEEE 519 harmonics measurement.
This makes the PQ3198 a strong fit for applications such as:
- Advanced industrial power quality investigations
- Utility and facility compliance testing
- Harmonic and high-order harmonic analysis
- Transient voltage capture
- Inverter and power electronics troubleshooting
- EV charger input/output power quality verification
- Long-term monitoring where high-confidence data is required
The PQ3198 also supports two systems of power measurement and efficiency calculation using channels 1, 2, 3 and channel 4. This can be useful when comparing input and output power, such as with inverter systems or EV charging equipment.
When to Choose the HIOKI PQ3100
The HIOKI PQ3100 is a practical choice for everyday power quality troubleshooting where ease of setup, broad measurement coverage, and efficient reporting are the main priorities. HIOKI describes the PQ3100 as a 3-phase 4-wire power quality analyzer compliant with IEC 61000-4-30 Class S standards, with an on-screen guide to simplify setup and testing.
For many maintenance teams, the PQ3100 provides the right balance of capability and usability. It can record voltage, current, power, harmonics, and flicker simultaneously along the same time axis, helping users capture intermittent interruptions, voltage drops, and frequency fluctuations while recording trend data.
The PQ3100 is a good fit for applications such as:
- Routine industrial troubleshooting
- Facility maintenance checks
- Voltage dip and interruption investigation
- Harmonics and flicker monitoring
- Long-term recording of power trends
- Three-phase system setup with guided measurement procedures
- Field work where fast, simple setup is important
One of the PQ3100’s key strengths is its Quick Set function, which provides an easy-to-understand on-screen guide for measurement procedures. This helps reduce setup errors and makes the analyzer easier to use for technicians who need reliable results without unnecessary complexity.
Key Selection Factors
- Measurement Standard
If your work requires Class A measurement for formal power quality verification or compliance-level reporting, the PQ3198 is the stronger choice. Its IEC 61000-4-30 Edition 3 Class A capability is designed for more demanding measurement confidence.
If your work is focused on general troubleshooting and routine facility maintenance, the PQ3100’s IEC 61000-4-30 Class S capability may be sufficient.
- Type of Power Quality Problem
Choose the PQ3198 when the issue may involve fast transients, high-order harmonics, inverter noise, or advanced waveform analysis. Its transient and supraharmonic measurement capabilities make it better suited for complex industrial environments with power electronics, variable frequency drives, or sensitive equipment.
Choose the PQ3100 when the main goal is to diagnose common power quality issues such as voltage dips, interruptions, harmonics, flicker, and frequency fluctuations.
- Ease of Setup
For teams that value fast setup in the field, the PQ3100 is very attractive. Its Quick Set navigation helps guide users through wiring and configuration, reducing the chance of incorrect setup on three-phase systems.
The PQ3198 also includes practical setup support, including presets, wiring checks, and bundled PQ ONE software, but it is generally better suited for users who need deeper analysis and more advanced measurement capability.
- Reporting Requirements
Both analyzers work with HIOKI’s PQ ONE software for analysis and report creation. If your reporting needs include IEEE 519 harmonic measurement or more advanced compliance documentation, the PQ3198 is typically the better fit.
For maintenance reports, troubleshooting summaries, and everyday power quality documentation, the PQ3100 can provide a strong and efficient workflow.
- Current Sensor and Kit Configuration
The analyzer is only part of the measurement setup. Current sensor selection is also important. RCC Electronics offers PQ3198 and PQ3100 analyzers, kits, rentals, and current sensor options, including 100 A, 600 A, and 6000 A configurations. Selecting the right kit depends on the system current level, conductor size, access space, and whether the job involves panel measurements, busbars, large feeders, or short-term rental testing.
Final Recommendation
If you need a high-end analyzer for advanced troubleshooting, compliance work, high-order harmonics, transient capture, and complex industrial investigations, choose the HIOKI PQ3198.
If you need a reliable and easier-to-use analyzer for everyday power quality troubleshooting, voltage dips, interruptions, harmonics, flicker, and long-term recording, choose the HIOKI PQ3100.
For many industrial teams, the decision comes down to the level of investigation required. The PQ3100 is ideal for practical field troubleshooting. The PQ3198 is the better choice when the problem is more complex, faster, harder to capture, or tied to compliance and detailed analysis.
To learn more or choose the right kit configuration, contact us
