Top Features to Look for in a Power Quality Analyser

June 18, 2024
Natalie Thorburn


Ever found yourself scratching your head over unexplained equipment failures or bizarre energy costs? Power quality analysers might be your unsung heroes. These nifty gadgets are essential in diagnosing and troubleshooting electrical power issues, ensuring your systems run smoothly. But with a sea of options out there, what should you really be looking for? Let's dive into the top features that make a power quality analyser worth every penny.

Understanding Power Quality Analysers

Definition and Purpose

A power quality analyser (PQA) is an instrument used to measure and monitor the quality of power in electrical systems. It captures data on various parameters like voltage, current, frequency, and harmonics to help identify problems that can affect the performance and longevity of electrical equipment.

Types of Power Quality Analysers

Power quality analysers come in several forms, including handheld devices for on-the-go diagnostics and more complex, stationary units for continuous monitoring in industrial settings. Your choice will depend largely on your specific needs—whether you’re troubleshooting occasional issues or maintaining a constant vigil over your power systems.

Key Features of a Power Quality Analyser

Measurement Capabilities

When it comes to PQAs, measurement capabilities are the bread and butter. Here are the crucial aspects to consider:

Voltage and Current Measurement

Your PQA should accurately measure both voltage and current. This is fundamental for identifying imbalances, dips, swells, and interruptions that can cause havoc in your systems.

Harmonics Measurement

Harmonics can lead to overheating and equipment failure. A good PQA will measure harmonics up to at least the 50th order, helping you nip these issues in the bud.

Transients Measurement

Transients—short, high-energy spikes—can damage sensitive electronics. Ensuring your PQA can capture and analyse these events is crucial for protecting your investments.

Data Logging and Storage

The ability to log and store data is what separates the pros from the amateurs in the world of PQAs.

Real-Time Data Logging

“A top-notch PQA will offer real-time data logging, allowing you to monitor your power quality continuously and react swiftly to any anomalies.” says CHK Power Quality.

Long-Term Data Storage

Long-term data storage is invaluable for trend analysis and identifying recurring issues. Look for a PQA with ample storage capacity and easy data retrieval options.

Display and User Interface

A clear, intuitive interface can make or break your experience with a PQA.

Screen Quality

A high-resolution screen ensures that data is displayed clearly, even in challenging environments. Colour displays can also help differentiate between various parameters more effectively.

User-Friendly Interface

Navigating through complex data should be as painless as possible. A user-friendly interface with straightforward menus and controls is a must-have.

Portability and Durability

Whether you’re in the field or on the factory floor, your PQA needs to be up to the task.

Size and Weight

Portability is key for on-site troubleshooting. A lightweight, compact design will save you a lot of hassle.

Build Quality

A rugged, durable build ensures that your PQA can withstand the rigours of daily use, including drops, bumps, and harsh environments.

Software and Connectivity

In today’s digital age, seamless connectivity and robust software support are non-negotiable.

Data Transfer Options

Look for PQAs that offer multiple data transfer options such as USB, Bluetooth, or Wi-Fi. This flexibility can make data analysis much more convenient.

Software Compatibility

Ensure that the PQA’s software is compatible with your existing systems. Good software should offer comprehensive analysis tools and regular updates.

Safety and Compliance

Safety is paramount when dealing with electrical systems. Here’s what to check:

Safety Certifications

Your PQA should have the necessary safety certifications, ensuring it meets the required standards for safe operation.

Compliance with Australian Standards

In Australia, power quality analysers should comply with standards such as AS/NZS 61000.4.30, which ensures reliable and accurate measurements. Additionally, compliance with safety standards like AS/NZS 3760 for in-service safety inspection and testing of electrical equipment is crucial.

Battery Life and Power Options

A reliable power source is crucial for uninterrupted monitoring.

Battery Longevity

Long battery life is essential, especially for field work. Look for PQAs that offer extended battery performance or the option to swap out batteries.

Power Source Flexibility

Flexibility in power options, such as the ability to run on AC power or recharge via USB, can be a lifesaver in various scenarios.

Cost and Warranty

Lastly, consider the financial and support aspects.


While it’s tempting to go for the cheapest option, remember that you often get what you pay for. Balance your budget with the features you need.

Warranty and Support

A solid warranty and reliable customer support can save you a lot of headaches down the road. Look for manufacturers that stand behind their products.

Advanced Features to Consider

For those looking to go the extra mile, here are some advanced features worth considering:

Remote Monitoring

Remote monitoring capabilities allow you to keep an eye on your power quality from anywhere, offering peace of mind and added convenience.

Integration with Other Systems

Integration with other systems, such as building management systems (BMS) or energy management systems (EMS), can provide a more comprehensive view of your electrical infrastructure.


Power quality analysers are indispensable tools for ensuring the smooth operation of electrical systems. By focusing on key features such as measurement capabilities, data logging, display quality, portability, software compatibility, safety, battery life, and cost, you can select a PQA that meets your needs and helps maintain the integrity of your power systems. Whether you're a seasoned professional or a newcomer to power quality analysis, understanding these features will guide you in making an informed decision.


What is a power quality analyser? A power quality analyser is a device used to measure and monitor the quality of electrical power in a system, capturing data on parameters like voltage, current, frequency, and harmonics to identify and diagnose power issues.

Why is harmonic measurement important? Harmonic measurement is crucial because harmonics can cause overheating, equipment malfunctions, and reduce the efficiency of electrical systems, leading to potential failures.

How does real-time data logging benefit users? Real-time data logging allows continuous monitoring of power quality, enabling quick identification and resolution of issues, thereby minimising downtime and preventing damage to equipment.

What safety standards should a power quality analyser meet? In Australia, a power quality analyser should comply with standards such as AS/NZS 61000.4.30 for reliable and accurate measurements and AS/NZS 3760 for in-service safety inspection and testing of electrical equipment.

How do software updates affect the functionality of a power quality analyser? Regular software updates enhance the functionality of a power quality analyser by improving performance, adding new features, and ensuring compatibility with the latest systems and standards.


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