Ensuring PV System Safety and Performance with the Sonel PVM-1021 Pro Meter The rapid expansion of photovoltaic (PV) micro-installations necessitates a proactive approach to safety and performance verification. Regular assessments using specialized tools like the Sonel PVM-1021 Pro meter are now essential for maintaining operational reliability and mitigating risks. This article explores how this advanced [...]
How the Sonel PAT-95 and PAT-96 meters can help ensure the safety of your power tools, machines and welding equipment The safety of the electrical equipment used by staff and end users is the responsiblity of employers, facility managers and service company owners. A requirement for regular inspections of electrical equipment is a legal necessity [...]
Power Quality Expert are proud to be a sponsor and part of the official ECA - Excellence in Electrotechnical and Engineering Services 125th Anniversary. Power Quality Expert - ECA 125th Anniversary Sponsor at the London Science Museum During the celebration year, we exhibited at the London Science Museum where we where able to demonstrate our [...]
Micro-ohmmeters in the power and industrial sectors – measuring low resistances and preventing failures Micro-ohmmeters are essential instruments for measuring very low resistances in electrical power systems. They enable the early detection of loose connections, overheated contacts and hidden defects before these issues result in failures or fire hazards. This article explains how the four-wire [...]
Automatic disconnection of supply during a short circuit – methods for verifying protection The use of electrical installations and equipment may pose a risk of electric shock, particularly when a fault occurs in the supply circuit or in equipment connected to it. Protection of persons who are in the immediate vicinity of electrical equipment at [...]
Metering for Part L2 Compliance in Non-Domestic Buildings A modern metering system provides the ability not only to comply with the latest regulatory requirements, such as Part L2 and ESOS but also to unlock significant energy savings. How can metering improve your energy efficiency? Metering helps you better understand how a building is performing and [...]
Compliance with ESOS and EU Energy Efficiency Directives and ISO 50001 Even though the UK is currently outside the EU in terms of legislation, we may still see how these directives can impact the UK as the drive to net zero continues. Starting on October the 11th all EU companies who have an annual energy [...]
Voltage Sags (Dips) and Swells in power quality measurements Voltage sags (also known as voltage dips) and swells (or surges) are the most common types of power quality disturbances. Every electrical system or equipment is designed to work at a specific voltage rating and changes in voltage below or above the defined low and high [...]
Voltage Flicker and Voltage Fluctuations in power quality measurements Flicker refers to the perceived fluctuation in light intensity that occurs when voltage fluctuations impact lighting systems. It is often caused by rapidly changing loads in the electrical network. It can be visually discomforting and can affect the performance and lifespan of sensitive equipment, especially in [...]
Harmonics Don’t Exist – and How We Measure Them In the world of power quality there is one topic that constantly captures the imagination of electrical engineers: harmonics. In today’s power system, where electrical loads are increasingly complex and evolving, so too are the concepts that surround harmonics. We are seeing the introduction of terms [...]
