Tag: PT secondary voltage

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Primary and Secondary Injection Testing of Instrument Transformers

Photo credit: https://www.aepgroup.in/ct-pt Instrument transformers are the important equipment of the power system. They are used to serve two main purposes i.e. measurement and protection. The instrument transformers which is used to reduce high currents flowing in power lines to the lower values for measurement and protection are called current transformer. The instrument transformers which …

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Leakage Current and Monitoring of GIS Lightning Arresters

In an earlier blog, we discussed the techniques and methodologies for health assessment of lightning/surge arresters.  We also shared our knowledge on the various methods of measuring resistive leakage current or power loss. In the following blog, we answered the 10 most frequently asked questions on the various aspects of testing and measuring lightning/surge arresters. …

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