Sample Calculation of Relay Setting of P543

Length of Protected Line (L): 1.645 KMLength of Adjacent Line (L1): 24 KMLength of Adjacent Line (L2): 44.3 KMLine positive sequence Impedance (Z1): 0.1556+J 0.381 ohm: 0.4115<67.758 ohmLine Zero sequence Impedance (Z0): 0.378+J 1. 298 ohm: 1.352<73.76 ohm Line Angle (RCA): 67.76 degCT Ratio: 400/1AAdopted CT Ratio: 400/1APT Ratio: 132kv/root3/110V/root3 Calculation and relay setting Transformation […]

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