Elspec UGM 2025 in Amsterdam Power Quality Expert attended the 3rd Elspec annual general meeting held in Amsterdam. Elspec produce a range of specialist power quality analysers utilising a patent technology, PQZIP, which allows their meters to store power measurements in a cycle by cycle resolution. Elspec also manufacturers power quality solutions including Power Factor [...]
Measurements of Short Circuit Loop Impedance in Photovoltaic Farms in IT Networks at Voltages up to 900V AC Loop impedance measurement on photovoltaic farms in IT systems with voltages up to 900V AC is one of the greatest challenges in modern PV system diagnostics. High voltages, the specifics of IT networks, the presence of inverters, [...]
Comprehensive diagnostic testing of electric vehicle charging stations using the Sonel EVSE-100 multifunction analyser The dynamic growth of electromobility calls for modern diagnostic tools that can ensure the safety and reliability of electric vehicle charging stations. One such solution is the Sonel EVSE-100 – a multifunction analyser specifically designed to comprehensively test EV charging infrastructure. [...]
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 [...]
