The importance of an official certification for Power Quality Instruments

Schneider Electric is one of NMi’s clients in the field of Power Quality Instrument testing and certification. Chris Ailey, Design Verification & Validation Architect at Schneider Electric in Canada shares his opinion on the importance of PQI certification.

“At Schneider Electric we have certified some of our Power Quality instruments at NMi. It is very important for Schneider to have an official certification for this type of instruments. A PQI’s performance involves numerous performance parameters. Each of which our customers require to be verified by an impartial and IEC 17025 recognized lab.”

He continues: “There are many standards important in this field, but key ones today are IEC 62586—1/-2, IEC 61000-4-30 and IEC 61557-12. One of the more important developments for this type of instruments would be measurements in the 2-150kHz range of frequencies.”

Nowadays a number of electricity meters already contain some PQ elements, in Chris’ opinion it is likely that this trend continues. “As processing power becomes cheaper, quicker and lower power, I only see further proliferation of Power Quality measurements into many devices, including more electricity meters.”

According to Chris Ailey also Power Monitoring Devices (PMD’s) become more important. “The line between PMD’s and PQI is not as clear as I think it could be. As it stands today a PMD-A device could also be classified as a PQI-A.” When being asked whether there is a market need to have those devices certified as well, Chris Ailey answers: “We see a need for both 62586-1/-2 (PQI certification) and 61557-12 (PMD certification), where the latter covers more metrics than the former.”

Partnership with NMi

Schneider Electric are happy with NMi as their certification partner. “We have performed a few official certification activities with NMi and we have come to regard them as a partner in fulfilling our customer requests. With new PQ standards come new challenges, and, going forward, we are glad to have NMi as a partner in this arena.”

About Schneider Electric

Schneider Electric develops connected technologies and solutions to manage energy and process in ways that are safe, reliable, efficient and sustainable. The Group invests in R&D in order to sustain innovation and differentiation, with a strong commitment to sustainable development. More information? Check their website.

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