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What is 220kV CT Calculation and Protection Study about?

The document outlines the calculations and considerations for CT (Current Transformer) burden details and earth fault coordination due to the addition of Neutral Grounding Reactors (NGR) in 220/33kV transformers. It includes fault data, impedance calculations, and results for various fault scenarios, as well as CT adequacy checks. The calculations are part of a protection study for transformer auto-close schemes in existing grid stations, with specific references to contract details and preparation by AG Po

Author

prince emmanuvel

Language

EN