Quiz2: We wish to connect a 6 kVA, 120/240 V transformer as an autotransformer to a 120 V source to supply 360 V to a load. a) Draw the circuit. b) What is the maximum load kVA that can be supplied? c) At the maximum load, determine ln, Ip, and I, d) What are the possibilities to connect it as a step-down autotransformer and determine the load voltage at cach case?

Quiz2: We wish to connect a 6 kVA, 120/240 V transformer as an autotransformer to a 120 V source to supply 360 V to a load. a) Draw the circuit. b) What is the maximum load kVA that can be supplied? c) At the maximum load, determine ln, Ip, and I, d) What are the possibilities to connect it as a step-down autotransformer and determine the load voltage at cach case?

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 3.58P: A single-phase two-winding transformer rated 90MVA,80/120kV is to be connected as an autotransformer...

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Similar questions

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The ratings of a three-phase three-winding transformer are Primary(1): Y connected 66kV,15MVA Secondary (2): Y connected, 13.2kV,10MVA Tertiary (3): A connected, 2.3kV,5MVA Neglecting winding resistances and exciting current, the per-unit leakage reactances are X12=0.08 on a 15-MVA,66-kV base X13=0.10 on a 15-MVA,66-kV base X23=0.09 on a 10-MVA,13.2-kV base (a) Determine the per-unit reactances X1,X2,X3 of the equivalent circuit on a 15-MVA,66-kV base at the primary terminals. (b) Purely resistive loads of 7.5 MW at 13.2 kV and 5 MW at 2.3kV are connected to the secondary and tertiary sides of the transformer, respectively. Draw the per- unit impedance diagram, showing the per-unit impedances on a 15-MVA,66-kV base at the primary terminals.
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