1. A 100-kVA distribution transformer has a maximum efficiency of 98 % at 50 % full-load and unity power factor. Determine its iron losses and full-load copper losses. The transformer undergoes a daily load cycle as follows: Load Power factor Load duration 100 kVA 1.0 8 hrs 50 kVA 0.8 6 hrs No load 10 hrs Determine its all-day efficiency. (Electrical Engineering, MS Univ. Baroda 1979)
1. A 100-kVA distribution transformer has a maximum efficiency of 98 % at 50 % full-load and unity power factor. Determine its iron losses and full-load copper losses. The transformer undergoes a daily load cycle as follows: Load Power factor Load duration 100 kVA 1.0 8 hrs 50 kVA 0.8 6 hrs No load 10 hrs Determine its all-day efficiency. (Electrical Engineering, MS Univ. Baroda 1979)
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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