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What is Transformer Differential Relay Settings about?

This document summarizes calculations performed to determine the appropriate differential relay settings for a power transformer to prevent unwanted tripping due to harmonics. It details the transformer specifications, fault current calculations for a three-phase short circuit to determine the required bias setting, and considers factors like tap changing, CT saturation, errors, and harmonics. The conclusion is that the bias setting needs to be increased from the initial 20% to 30% based on the calculations

Author

Lalit Soni

Language

EN