Technical library

Each issue of Electrical Tester has a range of hand-picked industry articles for high-voltage electrical engineers working on utilities.

Each issue of Electrical Tester has a range of hand-picked industry articles for high-voltage electrical engineers working on utilities.

In the marketplace for electrical transformer test equipment, there is a lot of talk about demagnetization of transformers. It is a recommended practice that probably will make it into the international guidelines and standards for transformer testing in the future.

Detailed guidance on ROCOF testing with the Sverker 900, including information about connections and instrument settings.

The term Demand pertains to both power and energy parameters. When referring to AC Power there are 3 different parameters to access, active power, reactive power and apparent power.

This application note looks at what you should check when analysing the power quality data from a solar panel application.

Renewable energy sources can include solar photovoltaic (PV), solar hot water, geothermal, wind and biomass. Of all of them, solar prices are dropping the quickest, so we are seeing this industry grow the quickest. This is most notably true in the residential and small commercial markets.

The most significant danger facing wind turbines is damage from lightning strikes. Lightning faults cause more loss in wind turbine availability and production than the average fault. The number of failures due to lightning strikes is known to increase with tower height and a growing number of studies speculate that rotating wind turbines may be more susceptible to lightning strikes than stationary structures.

Megger provide a range of lead sets and clips of different sizes and electrical characteristics for use with Megger 5 kV and 10 kV insulation resistance testers, enabling the user to choose the most applicable lead set for the work in hand.

A Portable Appliance Tester (PAT) is an instrument that is dedicated solely to the safety testing of portable electrical equipment in accordance with recognized national and local standards. Depending on locale, these standards may have been enacted into law. They may be requirements of specific industries or trade organizations, or just a good idea. In many cases, manufacturers of electrical consumer products who wish to export to foreign markets will be required, sometimes by national law, to assure the products have been safety tested. If testing is performed at time of manufacture, it will save money, aggravation and ill will that could result from having the products fail in the destination country.