A single-phase step-down transformer has a power rating of 100 kVA and a voltage ratio of 25000/5000 V, consider it has the following parameters. Rp 100 92, Rs = 40 22, Xp=220 22, Xs = 100 22, Rc = 200,000 £2, Xm= 100,000 £2, If the transformer delivers 100 kVA for 5000 V load with 0.7 lagging power factor, answer the following questions: a) Sketch the equivalent circuit, referring all the components to the primary side after moving the excitation branch to the primary terminals. b) Calculate the primary voltage, Vp. c) Determine the primary current, Ip. d) Calculate the voltage regulation. e) Calculate the core losses. f) Calculate the losses in the windings. g) Determine the efficiency. Ip R₂ jX, 2 Xm lo R₂ N₁ N₂ E₂ R₂ Dow/.

A single-phase step-down transformer has a power rating of 100 kVA and a voltage ratio of 25000/5000 V, consider it has the following parameters. Rp 100 92, Rs = 40 22, Xp=220 22, Xs = 100 22, Rc = 200,000 £2, Xm= 100,000 £2, If the transformer delivers 100 kVA for 5000 V load with 0.7 lagging power factor, answer the following questions: a) Sketch the equivalent circuit, referring all the components to the primary side after moving the excitation branch to the primary terminals. b) Calculate the primary voltage, Vp. c) Determine the primary current, Ip. d) Calculate the voltage regulation. e) Calculate the core losses. f) Calculate the losses in the windings. g) Determine the efficiency. Ip R₂ jX, 2 Xm lo R₂ N₁ N₂ E₂ R₂ Dow/.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.16P: A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters:...

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