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Technical library

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. 

 

If you would like to see the content we have available on a particular subject or need to locate some software, simply enter a search below. Please note, you will need to create an account to access some resources.

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    Showing item(s) 31 - 40 of 146 in total
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 3 of 3: Analysing Solar PQ Data
This application note looks at what you should check when analysing the power quality data from a solar panel application.
Published: 3 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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Measuring current on a CT secondary circuit
In some cases, measuring actual current on the primary conductor is not possible and the user may have to measure current on the secondary circuit of a CT. In this case, the MPQ can be programmed to display the actual primary current values instead of the current measured on the CT secondary circuit. This is done by following the steps given below.
Published: 5 January 2018
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Measuring operational low voltage networks
Low voltage cable faults are often unstable, so they can only be located when the cable is conducting live voltage. Testing under these conditions is extremely hazardous, so separations filters, as well as constructional safety methods, should be employed at all times.
Published: 18 December 2017
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Low voltage network structures
Low voltage networks are a huge national investment, under daily pressure to give out power for hours at a time to a plethora of electrical appliances. It is therefore essential that their cables and transformers are tested often to prevent outage. To effectively test the components in low voltage networks, it’s important to know the different types of systems within them and how they are structured.
Published: 18 December 2017
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Intro to fault location in low voltage networks
Fault occurrences in medium voltage networks are usually covered by redundancy in the system which, with appropriate switching, usually ensures a relatively uninterrupted continuation of the supply for the customer. A lengthy wait until the fault can be corrected only results in the increased risk of a second failure in this area, creating a customer outage that cannot be restored by switching.
Published: 18 December 2017
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Examples of fault location
In branched low voltage networks, low-resistance faults, interruptions and large changes in impedance can only be located by comparing fault-free and defective cores.
Published: 18 December 2017
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Pre-location based on impulse reflection methods
The use of T-branches in low voltage networks makes the evaluation of TDR traces considerably more difficult. Only through comparative measurements of fault-free and defective wires can possible results be achieved. The test pulses of the Teleflex are partially reflected at the T-joint with a negative algebraic sign, while test pulses that continue are simultaneously reduced in amplitude. The amount of reflection depends on the impedance in the main line and the continuing line.
Published: 18 December 2017
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  • Showing item(s) 31 - 40 of 146 in total