A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What percent of the transformer rating does this load represent? b) How many kW in additional load may be added at unity power factor before the transformer exceeds its rated kVA? c) Draw the power triangle before and after the additional load.

A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What percent of the transformer rating does this load represent? b) How many kW in additional load may be added at unity power factor before the transformer exceeds its rated kVA? c) Draw the power triangle before and after the additional 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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