The Iberian Blackout: A Wake-Up Call for UK Grid Resilience and the Role of Advanced Monitoring On April 28, 2025, at precisely 12:33 CEST, the Iberian Peninsula plunged into darkness. A massive blackout swept across Spain and Portugal, silencing cities, halting businesses, and disrupting the lives of millions. Over 20 gigawatts of power capacity vanished [...]
Energy as a strategic resource to support growth. The ISO 50001 Energy Management System certification of Amadori Group The degree of awareness of the “energy problem” for Italian companies that emerged from the research carried out at the end of 2012 from the Politecnico di Milano (Energy Efficiency Report – November 2012) is rather bleak. [...]
Measurement of the I-V characteristics of PV panels using the Sonel PVM-1530 Max in accordance with IEC 61829 The measurement of current-voltage (I-V) characteristics of photovoltaic panels plays a key role in evaluating system efficiency and detecting potential issues within a PV installation. Learn how to perform accurate measurements in compliance with IEC 61829 using [...]
Best Practices for Surge Protective Device (SPD) Management Checking surge protective devices Having your electrical equipment damaged during a storm can prove very costly; to make matters worse, it can be quite difficult to get compensation from your insurer. Learn what measures you can take to boost your chances of a successful claim and avoid [...]
Continuous measurement of power quality with Class A sub metering. The Sonel PQM-750 analyser is the answer to the growing demands of the power quality market. The meter has been developed for precise, and continuous monitoring of network parameter in a compact design with modular structure and advanced functionality. Evolution of power quality analysers Sonel [...]
Power quality challenges from linear and non-linear loads The evolution of technology has transformed the way we consume electricity—but it has also introduced new challenges from linear to non-linear loads. Until the 1980s, industrial and commercial facilities were dominated by linear loads—simple electrical systems without electronic controls. But by the late 1980s, the rise of [...]
Verifying Earth Fault Loop Impedance (EFLI) The ECA (Electrical Contractors Association) presented their latest technical guidance as part of a CPD training presentation for their Midland area members. The training was supported by Power Quality Expert who helped to explain how metering accuracy is calculated and how this accuracy of test meters is important when [...]
The new Sonel PQM-750 fixed permanent meter is designed to measure and record electrical characteristics and demonstrate the compliance of power quality to the latest measurement standards. The meter has the ability to verify the preset parameters of a connection agreement with measurements made to IEC61000-4-30 class A accuracy. The PQM-750 has been designed to [...]
Power Quality Expert award at the Sonel 30th Gala Poland’s premier test equipment manufacturer, Sonel S.A., celebrated their 30th anniversary with a gala event held in Jachranka near Warsaw. The event was attended by distributors and partners from both Poland and abroad who between them help sell Sonel products in over 100 countries [...]
ETL approval for Power Quality Expert and Elspec Power Quality Expert are proud to announce the addition of their Elspec range of power quality analysers to their portfolio of energy monitoring products approved on the ETL (Energy Technology List). The products approved on the list undergo independent assessment against measurement and accuracy criteria from the [...]
