Menu
Support et FAQ
Librairie technique Megger

Librairie technique Megger

La librairie technique de Megger donne accès à une diversité de ressources telles que des guides techniques, des guides d'applications et bien d'autres. En créant un compte Megger, vous pouvez enregistrer vos produits, accéder à de nombreux documents et à des mises à niveau de logiciels pour vos produits.

 

Pour accéder à notre gamme de documents et de ressources techniques, cliquez sur les liens ci-dessous.

Filtrer par type d'application :
    Affichage d'item(s) 1 - 10 de 206 au total
Total Demand Distortion (TDD)
Total Harmonic Distortion (THD) is a common method used to measure the level of waveform distortion.Total Harmonic Distortion (THD) measurements are an effective method of evaluating voltage distortion. However THD can be misleading when evaluating current distortion. THD is the summation of the harmonics presented as a percentage of the fundamental. For voltage THD this will be the summation of the voltage harmonics compared to the fundamental voltage. In a non-faulted condition voltage will always be present so a proper reference always exists.
Publié : 29 avril 2020
Télécharger en PDF
Testing ROCOF protection
Detailed guidance on ROCOF testing with the Sverker 900, including information about connections and instrument settings.
Publié : 29 avril 2020
Télécharger en PDF
Rapid Voltage Change (RVC)
A rapid voltage change is a fast rise or fall of the RMS voltage. This can be caused by the switching on of a specific load or by a sudden change in source voltage. Sudden source voltage changes can occur in solar grids when the sun is obscured by clouds. Source voltage changes can also occur in wind farms when then wind speed decreases. Load switching can cause a rapid voltage change if the rating of the load is a significant fraction of the fault level of the supply voltage.
Publié : 29 avril 2020
Télécharger en PDF
Pumping Station Motor Analysis
This test was performed at a pumping station that was using multiple 600HP motors and a VFD drive. The reported problem was the plant was not receiving adequate power output from the motors during peak times. It was not possible to connect to the inputs of the motors themselves so an MPQ2000 was connected to the output of the VFD and the following measurements were recorded.
Publié : 29 avril 2020
Télécharger en PDF
MPQ1000 Common Connections
An application note locoking at the common connections of the MPQ1000.
Publié : 29 avril 2020
Télécharger en PDF
Merging MPQ Data Files
Adding, removing or changing a piece of equipment in a facility can have significant impacts on the power quality and energy requirements. Introduced power quality phenomenon can cause equipment to trip off line. This can represent significant losses in revenue. Added equipment can create high peak loads or increased reactive currents that can lead to penalties. In order to determine the impact of these changes a power quality and demand study should be performed prior to the change and after the change.
Publié : 29 avril 2020
Télécharger en PDF
Mains Signalling
Power-line communication (PLC) carries data on a conductor that is also used simultaneously for AC electric power transmission or electric power distribution to consumers. It is also known as power-line carrier, power-line digital subscriber line (PDSL), mains communication, power-line telecommunications, or power-line networking (PLN).
Publié : 29 avril 2020
Télécharger en PDF
Lithium Ion Battery Testing
Lithium ion batteries consist of a family of batteries. They have different chemistries and characteristics to suit different applications.
Publié : 29 avril 2020
Télécharger en PDF
ETK (Earth Test Kit) for Earth (Ground) Testing
When considering earth (ground) testing, people will often ask about what type of test leads should be used. This includes questions about the type of wire used, the resistance of the leads and the length of the leads, as well as concerns over safety. Fortunately, most of the answers to these questions are addressed by the design of the earth tester itself.
Publié : 29 avril 2020
Télécharger en PDF
Enabling Additional Channels
When creating a setup file a particular power wiring connection needs to be selected. This instructs the instrument on how to calculate the power and energy. When the power wiring connection is create the required input channels are automatically enabled.In some cases the operator may wish to enable additional channels for other measurements. This will not affect the power or energy measurements.
Publié : 29 avril 2020
Télécharger en PDF
  • 1
  • 2
  • 3
  • 4
  • 5
  • ...
  • >
  • Affichage d'item(s) 1 - 10 de 206 au total