What does it do?
The Megger TTR-20 is used to measure the turns ratio, excitation current and polarity of windings in single- and three-phase distribution and power transformers (tested phase by phase), potential & current transformers, and tapped transformers
Why we use it?
To ensure continued proper operation, transformers are tested to verify that their electrical properties have not changed from design specifications.
It is used to determine the no-load accuracy of CTs and PTs
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