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What is Siemens 40 MVA Transformer Settings about?

This document provides calculations to determine settings for differential protection of a 40 MVA transformer. It first lists input data about the transformer ratings and voltages. It then calculates the rated currents on the HV and LV sides. Next, it determines the differential initial setting by calculating spill currents due to tap changer regulation and CT errors, setting it at 20% to include safety margins. It also sets the differential bias slope setting, with a base point of 0% and slope of 0.1

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bxteo

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EN