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Chapter 5
pages.mtu.eduInput impedance to the transformer is the primary winding in series with the parallel combination of the secondary winding and the exciting branch: The core branch elements are much larger that the winding impedance: 24. To conduct the short-circuit test: - Measure the voltage applied to the transformer high
Lesson 12: Parallel Transformers and Autotransformers
www.engr.siu.eduwinding impedance of the transformers. More current flows through the lowest impedance. V T Z A Z B Z k Z n Load I in I A I B I k I n ... two winding transformer coils N 2 N 1 V HS Load For step-down mode LS 2 HS 1 2 N N N N N LS HS 2 1 2 LS HS V V N N N N N a Where: N1 = number of turns in primary (HV)