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- Simple ac and dc equipment - Identify the functions and components of common types of electrical motors, generators, transformers, solenoids and contactors. Be familiar with their uses in single phase, three-phase or dc systems.
- Electric motors An electric motor is an electrical machine that converts electrical energy into mechanical energy.
- Electric generators An electric generator is a device that converts mechanical energy to electrical energy for use in an external circuit.
- Transformers A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
- Solenoids Electromechanical solenoids consist of an electromagnetically inductive coil, wound around a movable steel or iron slug (termed the armature).
- Contactors A contactor is an electrically controlled switch used for switching an electrical power circuit, similar to a relay except with higher current ratings. A contactor is controlled by a circuit which has a much lower power level than the switched circuit.
- Basic testing procedures - Recognize and understand basic requirements for the evaluation and assessment of electrical apparatus.
- The Basics of Insulation Testing [PDF] insulation is subject to many elements that can cause it to perform at a less than acceptable level. Excessive heat or cold, moisture, vibration, dirt, oil, and corrosive vapors can all contribute to deterioration. For this reason, routine insulation testing is necessary.
- Electrical Maintenance Tests and Inspections for Distribution Equipment [PDF] This quality of testing ability and knowledge will provide the client with a high level of confidence on the integrity of the distribution system.
- Best Practices in Electrical Maintenance [PDF] Maintenance best practices should include components of asset management, preventive maintenance, predictive maintenance, and proactive maintenance.
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