Course Summary
Credit Type:
Organization's ID:
30 hours
Dates Offered:
Credit Recommendation & Competencies
Level Credits (SH) Subject
Lower-Division Baccalaureate 2 transformers


The course objective is to teach the fundamentals of transformers and the different type of transformer connections.

Learning Outcomes:

  • define magnetism, describe key properties of magnetic materials, and explain the molecular theory of magnetism
  • discuss electromagnetism and understand key properties of electromagnetic fields along with common magnetic quantities
  • understand the measurement systems for magnetic quantities, and describe key properties of electromagnets
  • explain permeability as it relates to ferromagnetic materials along with developing an understanding of saturation as it relates to transformers
  • define turns ratio of the windings, explain various forms of mutual induction and identify common transformer power losses
  • explain power factor and how impedance plays a big role in transformer performance and short circuit stress
  • understand transformer design including core types, cooling methods, coolants, and temperature rise
  • identify common transformer fittings and accessories. You will also understand power ratings and the difference between true power and reactive power
  • describe connections in a single-phase circuit and explain how polarity is determined
  • describe a 3-phase circuit. Define and describe various connections including: delta-to-wye, wye-to-wye, wye-to-delta, and delta-to-delta
  • describe an open delta connection, describe a delta connection with high leg to ground, and how polarity is determined in a 3-phase transformer
  • recognize the physical connections of a 3-phase dry type transformer normally used to provide power to a commercial building
  • recognize the physical connections of three sets of single-phase transformer configured to make a 3-phase bank
  • define and describe odd-numbered, even-numbered, and triplen harmonics
  • define and explain total harmonic distortion, related concepts, and common sources of harmonics
  • understand harmonic effect on neutral currents and describe common methods of reducing harmonics problems
  • describe the process of power generation and the power distribution network
  • explain the function of system shutoff devices and causes of power blackouts
  • describe the process of system startup and identify methods of synchronizing power sources

General Topics:

  • Magnetism and electromagnetism
  • Transformers operation principles
  • Transformer connections
  • Real world transformer connections
  • Harmonics
  • Power generation and distribution
Instruction & Assessment

Instructional Strategies:

  • Audio Visual Materials
  • Classroom Exercise
  • Computer Based Training
  • Discussion
  • Lectures

Methods of Assessment:

  • Other
  • Performance Rubrics (Checklists)
  • Presentations
  • Quizzes
  • Classroom Participation

Minimum Passing Score:

Supplemental Materials