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This document calculates fault levels at various points in an electrical system serving an Astra Zeneca facility in Chennai. It calculates the maximum fault current at the secondary side of a 2000kVA transformer to be 44.87kA. It then calculates fault currents at the main LT panel, various floor panels, tapping points, and raising main end feed units by accounting for impedances of busducts and cables between points. Fault currents range from 44.19kA at the main LT panel to 22.024kA at a ground floor panel.

Author

Satheesh Kumar Natarajan

Language

EN