Power quality assurance for industrial needs. Power quality assessment according to IEC61000-4-30 class S is now provided by the LINAX PQ1000 power analyser series, whereby the measuring instrument is especially designed for analysing demand side power quality. The power quality assurance process on the demand side (after the PCC as per IEC TR 63191) is described here: "Demand Side Power Quality" (DSPQ)”.

But why class S and not class A?
Measuring instruments according to IEC 61000-4-30 Class A, basically provide measured values that are comparable across measuring instruments and manufacturers. In case of legal disputes, class A is mandatory and is especially relevant for distribution system operators.

Power quality analysers according to IEC 61000-4-30 class S are intended for basic/advanced power quality analysis and provide useful monitoring data. Instruments that meet Class S performance requirements are used for statistical power quality surveys and other applications and measurement services. There is no potential for disputes. This also means that no mandatory requirement for comparative measurements. The performance requirements for Class S are less stringent than for Class A. This results among other things, in a lower price. In industrial and utility applications, they are often used in the IPC (according to IEC [TR] 63191, this is the power distribution network after the Point of Common Coupling (PCC)). Even in data centres, they are strongly recommended within the infrastructure, according to EN50600-2-2:2019-08 [Chapter 6.2.3 Voltage Quality].

Power quality assurance certification also for class S
For accurate and precisely repeatable power quality measurements, it is especially important that the measurements comply with measurement procedure standards. These should not be confused with the standards for power quality compliance. For this reason, class S measuring instruments should also be certified. For the LINAX PQ1000, this is ensured by the Swiss Federal Institute of Metrology (METAS), based on its big brothers LINAX PQ3000 & PQ5000. With Swiss precision.

Power quality assurance with the highest cybersecurity standards
The issue of cybersecurity is also growing more and more important as devices are increasingly networked. Especially in the energy distribution sector, for both public and private grids. Due to the threat situation, effective cybersecurity is essential. Like its big brothers, the LINAX PQ1000 offers many effective IT security features. These include role-based access rights (RBAC), encrypted transfer of web pages (https), client whitelist to limit access to end devices, audit log for seamless monitoring of changes and operations, certified firmware updates, redundant data logger outside the IT system.

LINAX PQ1000 configurations
This measuring instrument, also referred to as a PQI or Power Quality Instrument as defined by IEC 62586-1/2 Power Quality Measurement in Power Supply Systems, is available in various options. The commonly used 96 x 96 mm form factor, allows the instrument to be easily fitted anywhere, either with TFT display for panel mounting or for DIN rail mounting with or without TFT display. All variants are possible, for complete flexibility. In addition, operation and communication are ultra-simple, thanks to the integrated web browser. No need for any additional software: operation, parameterization and monitoring are as easy as child’s play. You can view the related tutorials at https://www.youtube.com/user/CamilleBauerAG/videos

Info: https://pq-as-a-service.com/en/24-7-measuring-instruments-pqi-fixed/