The Megger technical library provides access to a range of additional content and resources such as technical guides, application notes and more. Use the filters to browse specific content (e.g. application notes) or refine your search to a particular electrical application area.
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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
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
Testing ROCOF protection
Detailed guidance on ROCOF testing with the Sverker 900, including information about connections and instrument settings.
Published: 27 August 2018
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
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
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
5 kV and 10 kV Insulation tester lead sets
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.
Published: 23 May 2018
Determining harmonic direction
Harmonics are caused by non-linear loads. Linear loads draw a linear current that follows the changing voltage of the AC waveform. Non-linear loads draw current pulses periodically, which creates distorted waveforms.
Published: 21 May 2018