QNA 600: The expert your installation needs

The new network analyzer detects and analyzes power quality

Our growing dependence on electricity for our daily activities has raised the importance of maintaining quality standards that ensure a reliable and efficient supply. Given this situation, the installation of network power quality analyzers is regarded as an essential need. Understanding how loads in an electrical installation behave in response to the different disturbances that may occur is essential to avoid operational problems or additional costs resulting from production downtimes.

Power quality analyzers are electronic devices designed to measure, monitor and analyze the electrical parameters of an energy distribution system. Their main purpose is to provide detailed real-time information on the behavior of the electrical network in order to optimize its operation, improve energy efficiency and detect potential anomalies.

This type of solution is essential to ensure continuity of supply in electrical installations, especially for large and medium consumers, where a service interruption or a production stoppage due to failures in electronic devices can generate significant cost overruns.

Certificates and regulations of the QNA 600

The QNA 600 network analyzer is Class A certified as per IEC 61000-4-30 (Edition 3). This means that the data recorded by QNA 600 complies with the quality regulations in terms of accuracy and method, meaning it is completely reliable and valid to demonstrate compliance or non-compliance with voltage and current quality requirements for both electricity producers and distributors (suppliers) and customers (subscribers).

This version of the standard involves compliance with IEC 62586-2, which establishes the guidelines and procedures to ensure the measurement method and the accuracy of the values measured by the quality analyzers.

The ability to accurately analyze these events in a timely manner is crucial to anticipate possible damages and minimize their impact.

Power quality, now easier than ever

The QNA-600 also generates automatic reports based on the EN 50160 European quality standard to facilitate the interpretation of data, showing if the power quality complies with the minimum established requirements. At the set frequency, the QNA-600 network analyzer will create and send a report stating whether the supplied quality is adequate. Most importantly, you don't need to be an expert in analyzing complex data or identifying variables and their margins, since the QNA-600 processes all the readings and informs you if the quality standard is met.

Thanks to this analysis, you can identify common problems, such as overvoltages caused by proximity to the transformer substation, or undervoltages due to the distance from it. Additionally, you can determine whether any harmonics are generated by your own loads or by other installations connected to the same distribution line.

The IEC 61000-4-30 and EN 50160 standards are both used to assess power supply quality, but they differ in focus and purpose.

IEC 61000-4-30 focuses on how to measure and the accuracy of power quality measurements, while EN 50160 defines the limits that power quality must meet in distribution networks.

To determine compliance with these standards, the QNA-600 network analyzer measures and records electrical parameters, quality events, and disturbances as per the criteria set by the standards. With the QNA-600, you can detect the following events that may impact the performance of an installation:

• Surges, dips, interruptions and voltage and current transients, with their waveform
• Harmonics and interharmonics up to the 63rd order
• Historical variables such as voltage, current, power, frequency, flicker, imbalances, and asymmetries.
• THD% (Total Harmonic Distortion) and TDD% (Total Demand Distortion)
• Harmonic direction
• Active, reactive and inductive energy

Easy data interpretation

All the data collected by the QNA-600 is presented in an ITIC curve, making it very simple to interpret. This information lets you assess the severity of a voltage event so you can quickly identify faults or resets in the electronic equipment in your installation.

At a glance, you can easily identify any anomalies in your electrical installation and focus on analyzing any events that may have truly impacted its operation. This approach ensures that your analysis is targeted at factors that could genuinely increase your costs.