Identify Power Quality Problems with Greater Confidence

The Hioki power analyzer PQ3198 is designed for engineers and electrical professionals who need accurate, detailed insight into power supply conditions. Monitor voltage fluctuations, harmonics, transient events, interruptions, inrush current and other power quality issues from a single portable instrument.

Built for power quality troubleshooting, maintenance and detailed electrical analysis, the PQ3198 combines high measurement accuracy with continuous recording and advanced event capture.

Key Capabilities:

• IEC 61000-4-30 Edition 3 Class A compliant
• Continuous, gapless power quality recording
• Measures high-order harmonics up to 80 kHz
• Captures transient voltage up to 6000 V peak
• Supports AC current measurement up to 6000 A with compatible sensors
• Measures power and efficiency across two circuits
• Supports inverter measurements
• PQ ONE software for data analysis and reporting
• Optional GPS synchronisation for multi-instrument measurement

Power quality problems are not always obvious.

A production line may stop unexpectedly. Sensitive equipment may reset. Motors can overheat. Circuit breakers may trip without an immediately apparent cause. Voltage dips, harmonics, transients, interruptions and unbalance can all contribute to equipment problems and inefficient operation.

Basic electrical measurements may tell you what the voltage or current is at a particular moment. They may not show what happened before the fault or what caused it.

That is where the Hioki PQ3198 helps. The analyzer continuously monitors electrical conditions and records power quality events so engineers can examine what occurred around an abnormal condition.

Instead of relying on assumptions, maintenance teams can investigate using recorded measurement data.

The PQ3198 can monitor multiple power quality parameters, including:

• Voltage swells and dips
• Voltage interruptions
• Transient voltage
• Frequency fluctuations
• Inrush current
• Harmonics
• Interharmonics
• High-order harmonics and supraharmonics
• Voltage and current unbalance
• Power factor
• Active, reactive and apparent power
• Energy and efficiency

This makes the instrument suitable for troubleshooting electrical installations, industrial equipment, power distribution systems and other applications where reliable power is critical.

When power quality decisions depend on measurement data, accuracy matters.

The Hioki PQ3198 provides high-accuracy measurement with continuous recording, helping engineers capture both ongoing trends and sudden electrical events.

Its published basic measurement accuracy includes:

• Voltage: ±0.1% of nominal voltage
• Current: ±0.1% rdg. ±0.1% f.s. + current sensor accuracy
• Active Power: ±0.2% rdg. ±0.1% f.s. + current sensor accuracy

The analyzer also supports transient measurement up to 6000 V peak and high-order harmonic measurement from 2 kHz to 80 kHz.

For professional power quality investigations, consistent measurement methods are essential.

The PQ3198 complies with IEC 61000-4-30 Edition 3 Class A, supporting standardized measurement of power quality parameters.

Class A instruments are designed for applications where measurement accuracy, repeatability and comparability are important. The PQ3198 can perform continuous calculations and detect events such as voltage swells, dips and interruptions.

This makes it particularly useful for professional power quality surveys, electrical troubleshooting and detailed analysis where dependable measurement data is required.

Non-linear loads, switching equipment, variable-speed drives and modern electronic systems can introduce harmonics and other disturbances into an electrical network.

The PQ3198 gives engineers the measurement capability needed to identify these conditions.

It supports harmonic measurement through the 50th order, high-order harmonic measurement up to 80 kHz, total harmonic distortion measurement and IEEE 519-related harmonic analysis through the accompanying software capabilities. This provides a clearer picture of how electrical loads are affecting the power system.

The PQ3198 includes an isolated fourth voltage channel, allowing power and efficiency measurement across two separate circuits.

This can be useful when evaluating equipment where input and output conditions need to be compared, including:

• Inverters
• UPS systems
• Solar power systems
• EV rapid chargers
• AC and DC circuits
• Power conversion equipment

For example, engineers can examine the power supplied to equipment and compare it against its output to better understand operating efficiency.

Measurement is only useful when the data can be interpreted efficiently.

The bundled PQ ONE application software helps users analyse recorded power quality data and prepare reports. This can reduce the time required to turn field measurements into useful technical findings.

Depending on the analysis required, PQ ONE can assist with power quality evaluation and reporting related to standards such as IEEE 519 and EN 50160.

Test & Measurement Industry Experience

Apex Test Instruments states that its key management team brings more than 20 years of experience in the Test & Measurement industry, supported by technical and application knowledge.

Pre-Sales Technical Support

Selecting a power quality analyzer involves more than choosing the main instrument. Current sensors and accessories should be matched to the intended measurement range and application. Apex Test Instruments provides pre-sales support to help customers identify suitable Test & Measurement solutions.

Post-Sales Support

Technical instruments often require ongoing application and product support. Apex positions pre- and post-sales service as a core part of its Test & Measurement offering.

Singapore-Based Support

Apex Test Instruments is based at Sim Lim Tower, Singapore, giving local customers access to a Singapore-based point of contact for product and technical enquiries.

What is a Hioki power analyzer used for?
A Hioki power analyzer is used to measure and analyse electrical power parameters and power quality conditions. The PQ3198 can detect voltage dips, swells, interruptions, transients, harmonics, inrush current, frequency variations and other electrical disturbances.

What is the difference between a power analyzer and a power quality analyzer?
A power analyzer primarily focuses on electrical parameters such as voltage, current, power, efficiency and power factor. A power quality analyzer also monitors disturbances such as harmonics, voltage dips, swells, interruptions and transients. The Hioki PQ3198 combines power measurement with advanced power quality monitoring.

Is the Hioki PQ3198 IEC 61000-4-30 Class A compliant?
Yes. The Hioki PQ3198 complies with IEC 61000-4-30 Edition 3 Class A, making it suitable for standardized power quality measurements where accurate and comparable results are required.

Can the Hioki PQ3198 measure harmonics?
Yes. The PQ3198 measures harmonics up to the 50th order and high-order harmonic or supraharmonic components up to 80 kHz. It also supports total harmonic distortion and other harmonic analysis functions.

Unexplained equipment faults, voltage disturbances and harmonic problems can be difficult to diagnose without the right measurement data.

With advanced event recording, Class A power quality measurement and detailed analysis capabilities, the Hioki PQ3198 Power Quality Analyzer gives electrical professionals the information needed to investigate power problems with greater confidence.

Need help selecting the correct PQ3198 configuration, current sensor or accessory for your application? Speak with the Apex Test Instruments team about your measurement requirements.