Exploring Electrical Systems: AC, DC, and Safety
Part I of this course introduces the fundamentals of alternating current (AC) circuits, key terminology, and AC power generation. It explains the operation of an elementary AC generator, the role of inductors and capacitors in AC systems, and the impact of inductance and capacitance on current flow. This part also highlights the importance of AC power analysis in modern technology.
Part II of this course expands on alternating current (AC) circuits, components, and terminology. It covers AC generators, their operation, and different types, along with AC motors used in machinery. This part also explores the role of transformers in power transmission and control systems, emphasizing the importance of understanding their functions in modern facilities.
Part III covers the effects of inductance and capacitance in DC circuits, along with the rules governing reactive components. It also introduces battery types, circuit arrangements, and associated hazards. Additionally, this part explores DC generators, their voltage production, load characteristics, and applications, as well as DC motors, including speed control and performance considerations.
Part IV introduces transformer operation, maintenance, and testing. It covers the principles of electromagnetic induction, the evolution of transformer design, and the increasing importance of regular maintenance due to tighter design tolerances.
Part V provides an overview of electrical conductors, their types, and applications in electrical systems. It explains the role of conductors in connecting circuit components and highlights key factors influencing conductor selection, including size, composition, electrical properties, weight, cost, and environmental conditions.
Part VI explores electrical hazards and fundamental safety practices. It highlights risks associated with power tools and electrical circuits, especially in workplaces where hazards are greater. This part prepares learners for further safety training, covering key definitions, best practices, and real-life case studies of electrical incidents.
This online interactive presentation is intended to electricians, electrical journeyman, and other technical personnel interested in learning more about the fundamentals of electrical power systems, transformers, conductors and electrical safety.
This continuing education interactive presentation is intended to provide Master, Master Special, Limited, Limited Special, Journeypersons, Residential and Apprentice Electricians in the State of Delaware with the following specific knowledge and skills:
Learning Objectives of Part I:
- Familiarizing with the construction and operation of a simple AC generator
- Understanding the development of a sine-wave output in an AC generator
- Learning about inductive and capacitive reactance and impedance in a circuit
- Understanding the effect of the phase relationship between current and voltage in circuits
- Understanding phasor diagrams representing AC current and voltage in circuits
- Calculating the inductive and capacitive reactance and impedance of different circuits
- Learning about resonance, resonant frequency and the net reactance of a circuit
- Understanding the relationship between apparent, true, and reactive power by definition or by using a power triangle
- Gaining an overview of three-phase power systems used in the industry
Learning Objectives of Part II:
- Familiarizing with the components, theory and operation of an AC generator
- Understanding the role of voltage regulation equipment and the function of each of their components
- Learning about the theory, terminology and the application of the different types of AC motors
- Learning about the theory, terminology and the application of the different types of transformers
- Knowing how to perform calculations of various electrical parameters
Learning Objectives of Part III:
- Understanding inductance and capacitance
- Learning battery terminology, battery theory, and battery operations
- Understanding the different types of batteries and their hazards
- Understanding DC equipment terminology and construction
- Gaining knowledge of DC generator theory and construction
- Understanding DC motor theory and operation
- Gaining knowledge the different types of DC motors
Learning Objectives of Part IV:
- Gaining an overview of the principle of operation of transformers, their function, and their physical characteristics
- Familiarizing with the basic structure of the different types of transformers
- Understanding the different components that make a transformer
- Learning how to test, maintain, and evaluate the condition of transformer
Learning Objectives of Part V:
- Familiarizing with the definitions of unit size, mil-foot, square mil, and circular mil and the mathematical equations and calculations for each
- Understanding specific resistance and the three factors used to calculate it in ohms
- Learning the proper use of the American Wire Gauge when making wire measurements
- Understanding the factors required in selecting proper size wire
- Learning the advantages and disadvantages of copper or aluminum as conductors
- Defining insulation resistance and dielectric strength including how the dielectric strength of an insulator is determined
- Identifying the safety precautions to be taken when working with insulating materials.
- Knowing the most common insulators used for extremely high voltages
- Knowing the type of conductor protection normally used for shipboard wiring
- Gaining an overview of the design and use of the coaxial cable
Learning Objectives of Part VI:
- Understanding the causes of an electrical shock
- Describing the dangers caused by an electric shock
- Describing the various electrical hazards
- Learning skills that help you recognize, evaluate, and control electrical hazards
- Preparing you for additional safety training such as hands-on exercises
- Providing detailed reviews of regulations for electrical work
- Learning safe practices and developing good safety habits
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