The 40 kVA three-phase transformer is loaded with a load with a back power factor of 0.8, while the loading rate is 50% and it works at maximum efficiency. The primary of this transformer is star- connected and connected to the interphase voltage of 3400 V. The equivalent resistance to the primary is Req1= 15ohm. What is the % voltage of the transformer when operating under the specified load?

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 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...
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The 40 kVA three-phase transformer is loaded with a load with a back power factor of 0.8, while
the loading rate is 50% and it works at maximum efficiency. The primary of this transformer is star-
connected and connected to the interphase voltage of 3400 V. The equivalent resistance to the
primary is Req1= 15ohm. What is the % voltage of the transformer when operating under the
specified load?
Transcribed Image Text:The 40 kVA three-phase transformer is loaded with a load with a back power factor of 0.8, while the loading rate is 50% and it works at maximum efficiency. The primary of this transformer is star- connected and connected to the interphase voltage of 3400 V. The equivalent resistance to the primary is Req1= 15ohm. What is the % voltage of the transformer when operating under the specified load?
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