Question: You are to determine a protection coordination scheme for the distribution system shown. This must include:1.Instrument CT sizes/ratio & location for each circuit breaker.2.Instrument VT

You are to determine a protection coordination scheme for the distribution system shown. This must include:1. Instrument CT sizes/ratio & location for each circuit breaker.2. Instrument VT ratio/vector group and location on bsubars.3. Protection functions used for each power equipment and general interconnection to each circuit.4. General wiring arrangement for the proposed relays to be used.

132kV Bus Bar 132kV/11kV 60/70 MVA ONAN/ONAFA Ynd 55 MVA 11 kV G 635 02 Grid Connection NER 25.4 132kV / 22kV 20/27 MVA Dyn11 Z=11.5% Load

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Protection Coordination Scheme for the Distribution System Shown Instrument CT SizesRatio Location for Each Circuit Breaker Circuit Breaker CT SizeRatio Location CB1 10005 On primary side of 132kV11kV ... View full answer

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