Tan Delta testing - Principle and Method
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Tan Delta is a a diagnostic test conducted on the insulation of cables and windings. It is used to measure the deterioration in the cable. ...
Earth Resistance Measurement
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Measurement of Earth Resistance is a vital part of the maintenance of any electric installation. The function of a sound earthing system is...
Core Balance Current Transformers
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The CBCT or the Core Balance Current Transformer is a current transformer is used for earth fault protection in grounded three phase system...
Polarization Index
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Polarization Index is an indicator which gives an idea of the cleanliness of the windings. It is a ratio of the Insulation Resistance Measur...
Checking the Polarity of Current Transformers
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The Polarity of current transformers is extremely important. Just like a battery, a current transformer too has a polarity. The polarity d...
Reverse Power Relay
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The Reverse power relay is used to protect a synchronous generator, running in parallel, from motoring. Motoring occurs due to the failure ...
The Vector Surge Relay
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The vector surge relay is used to decouple synchronous generators from the grid utility in case of grid failure. Synchronous generators are ...
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