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Bài giảng ngành Điện: Giải các bài toán trong mạch điện điện thế thấp một pha và ba pha (Phần B) gồm các chủ đề sau Solve problems in single and threephase low voltage circuits Part B Content Topic 1: AC power and power factor Topic 23: Multiphase systems Topic 4: Threephase STAR connection Topic 5: Threephase, Fourwire systems Topic 6: Threephase DELTA connection Topic 7 Interconnected Star and Delta Devices Topic 8 Energy and Power Requirements of AC Systems Topic 9: Harmonics
.. .Three- Phase, Four- Wire Systems A three- phase, four- wire system consists of three ACTIVE conductors plus a NEUTRAL conductor (note:... 20/02/17 Nathan Condie Neutral Current Exercises 20/02/17 Complete the exercises on three- phase, four- wire systems (calculating neutral current) Nathan Condie Neutral Current Exercise Exercise... IN 5) Phase angle ØN 3Ø, 11kV 20/02/17 Nathan Condie 15 Neutral Current Exercise ANSWER Answers: ZA ZB 30Ω 40Ω ZC 50 Ω Pƒ= Pƒ= 0.5lag 0.8lead L1 2) ØA=600 lag VA, ØB =36.90 lead VB, ØC= 25. 80