Get all the answers you need, not just reams of data.

Great power quality monitoring systems ensure all information is available when needed, where needed and in the desired format. They do this through a combination of scalable systems, modular hardware and sophisticated software capabilities.

The PMD-A from Qualitrol is one such system. And it was the first to combine IEC 61000-4-30 Class A power quality monitoring, digital fault recording and energy metering into a single device.



Continuous Recording

continuous recording parameters insulect

Continuous recording of up to 1014 parameters (min, max, avg) for 10 minute intervals, or up to 256 parameters for customized time
interval (1 min - 24 hours).

Scalable Hardware

scalable network monitor system

With Qualitrol you can meet basic and demanding monitoring requirements across your network, through their modular PMD-A system design.

Extensive Triggering


Triggered recordings for sags / dips, swells, interruptions, power swing, level/rate change, rapid voltage changes and other parameters that exceed predefined thresholds.

Easy Commissioning

easy pq monitor commissioning

A Smart Configuration Tool is designed to avoid errors or missing parameters. It greatly simplifies the commissioning process for users, cutting down on time and expertise needed.



Power Quality Conformance

All sectors of our energy market – Generation, Transmission and Distribution – share the concern of conformance with the National Electricity Rules. Compliance with these rules is achieved through the analysis of collated power quality data. This same data is used to improve power quality, set planning levels and advance grid reliability to meet customer needs.

All connection agreements by default incorporate a minimum negotiated access standard which includes the clause that a connection:

“will not adversely affect the quality of supply for other network users”

class a power quality monitor

The Class A Distinction.

To obtain reliable, repeatable and comparable results, the IEC standard 61000-4-30 Class A has defined standard measurement methods for each type of parameter.

Only Class A Power Quality monitoring enables parties to compare measured values and make a qualified judgement as to whether contractual obligations are being met.

  • Used for standards verification
  • Resolve disputes between utility & customer
  • Understand embedded generation impacts
  • Avoid penalties




User Friendliest

Delivering ease of use for engineers was the main objective in the development of PMD-A. Customer requirements were collected over a 20 year period to shape the specification.

Fast client-less information access (PQ reports), favourite parameters, overview screens, automated analysis, quick configuration copy from one device to another, easy device commissioning (wizard style) and system health checks are just some of the features that came from end user insights.

The end result is a comprehensive package that provides critical analysis at the click of a single button.



PQ Hardware and Software from Qualitrol

Some Technical PQ Reading

To understand the Power Quality application better and to see what Qualitrol are focused on, have a read of some of these technical papers from Qualitrol.


We're with you for all your Monitoring needs.


Specification Development

We work closely with end user teams to understand their challenges, information needs and existing architecture, so to help guide future specifications and investment decisions.


System Configuration

Our team can support system setup, from integration with existing architecture, through to triggering, automated actions and report writing.

Expert Advice

With hundreds of installations across Australia, our network monitoring team has plenty of experience in the capture and utilisation of important fault and disturbance data.


Fleet Maintenance

We offer a range of services to support the lifetime operation of monitoring hardware and can customise this to suit individual networks.


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Find out more today.

Whether you're operating a Transmission or Distribution network, a Generation plant, or Industrial site, we would be glad to have a no obligations discussion to understand how we can help your organisation.