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Electrical Tester - June 2018
Each issue of Electrical Tester has a range of hand-picked industry articles for high-voltage electrical engineers working on utilities.
Published: 3 October 2018
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Demagnetization of power transformers
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.
Published: 28 September 2018
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Testing ROCOF protection
Detailed guidance on ROCOF testing with the Sverker 900, including information about connections and instrument settings.
Published: 27 August 2018
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Demand Power and Energy (Part 1)
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.
Published: 31 July 2018
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Solar Energy - Part 1 of 3: An overview of PQ Issues
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.
Published: 3 July 2018
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Testing wind turbine lightning protection
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.
Published: 12 June 2018
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