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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) 1 - 10 of 126 in total
1-500Hz Narrow Band Dielectric Frequency Response
For approximately 25 years, dielectric frequency response (DFR) has been investigated and proven to provide an accurate method of determining both the moisture condition of paper + oil power transformers and bushings. Together with general insulation testing, DFR provides enhanced insulation condition of the transformer under test.
Published: 22 November 2019
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PAT testing IT equipment
A look at the equipment available for PAT testing computer systems.
Published: 12 November 2019
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35829 CT Adapter
The Megger 35829 CT Adapter is designed to allow the MPQ analyzers operate with various manufacturers current clamps. This CT allows current clamps that have male banana jack terminations to be used with the MPQ analyzer.
Published: 6 November 2019
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Testing Batteries with 2mm Access Ports
Batteries can present an arc hazard due to their exposed terminals (posts). If a non-insulated tool should fall across these terminals the resulting arc flash can injure people in the vicinity as well as damage equipment. This is why insulated tools should be used when working on battery strings. This is also why some batteries have caps covering their posts. These caps are removed during testing.
Published: 6 November 2019
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Updating BITE3 Firmware with Power DB LITE
This procedure will guide you through updating the firmware in the BITE3 using the Power DB LITE software. It is recommended that you first download the latest firmware from the Megger web site.
Published: 18 October 2019
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A guide to conductor resistance testing of rotating machine stator with MTO106
Measuring the DC conductor resistance of a rotating machine stator can reveal a lot of information about the machine. It is always desirable to find out the existence of any resistance that is higher than the nameplate value which might be caused by poor joints, corrosion or mechanical deformation of the stator winding.
Published: 20 September 2019
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DC test of vacuum integrity in MV switchgear
Since the 1950’s vacuum has been used as insulation media in switchgears. Even though that technology has proven to be very reliable, over time air will leak into the vacuum chamber and degrade the insulation. Also, a good practice is to measure after transport or accidents. The accepted way to test the vacuum integrity has always been through a voltage withstand test. For field tests DC test is preferred due to the weight andsize of the instruments.
Published: 19 September 2019
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Railway Bonding
In the UK, we have two common power systems supplying locomotives. A 25 kV overhead line system and a 750 V third rail system. Both systems use the track as a return path for current flow (see figures 1 and 2).
Published: 22 August 2019
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Advances in Modern Instrument Controls: The Evolution of Insulation Tester Equipment
The original design of electrical test instrumentation was often focused on taking a measurement and little else. A lot of the operation and interpretation was left to the operator. This was fine for people who liked the challenge or had experience. But it could be tough on apprentices, new hires, and those who were simply handed the instrument with no training.Constant improvement in instrumentation has addressed these problems by adding to the capabilities of the instrument. Some are for convenience, some safety and some the advancement in technology over the years that helps standardize testing and provide more accurate results. A prime example is that of insulation testers. Let’s examine some of the key improvements in features and functions, and what they mean to the operator.
Published: 9 August 2019
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Motor testing with MTO106
Winding resistance measurements are conducted for detecting various faults in transformers – including shorted turns, loose connections, broken strands, and malfunctioning tap changer mechanisms. Winding resistance test sets such as the MTO106 are also capable of testing electric rotating machinery – motors and generators. Winding resistance measurements detect problems in a motor that other tests may not find. These problems include partial or fully shorted coils, poor crimps/connections, imbalance between phases (improper turns on a phase), and incorrect coil (phasing) connections. 
Published: 22 July 2019
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  • Showing item(s) 1 - 10 of 126 in total