10Transformers
OBJECTIVES: After studying this chapter, you will be able to
- Describe the principles of operation of all transformers
- Define the terms step-up and step-down
- Select a transformer power rating based on the loads to be powered
- Understand practical concerns when using transformers
- Explain the differences and similarities between single-phase and three-phase transformers
- Understand and use terms employed for transformers
- Understand the four different configurations for connecting three-phase transformers
- Calculate efficiency of a transformer based on its daily usage data
- Explain familiar tests for measuring transformer data
- Use the data from tests to determine transformer losses
New terms: All-day efficiency, autotransformer, copper ...
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