This electrical plant maintenance training program builds on the troubleshooting electrical control circuits program. The program contains sections to describe how the electrical motor control circuit works as well as how to use the troubleshooting tools. The program evaluates the time and money spent to solve the fault and records all the steps performed to solve the fault.
MATERI
1. Electrical Schemstics
* Power and control circuits
2. Mapping Control Circuits – Ladder Diagrams
* Power rails and wire colors
* Arrangements control element, load, circuit
* Line and wire numbers
* Tag names and common electrical symbol abbreviations
3. Logical Circuits
* AND Series circuit
* OR Parallel circuit
* Compound and complex circuits
* NOT circuit
4. Basic Electrical Principles
* Power source transformers
* Flow of electricity
* Switches allow or prohibit current flow
* Loads
5. Transformers
* Magnetism
* Induction
* Primary/secondary
* Turn ratio
* Grounded and floating ground
6. Disconnecting Devices and Symbology
* Knife switch
* Disconnects
* Circuit breakers
7. Control Elements, Switches and Symbology
* Relay contacts normally open, normally closed
* Solid-state, timing, overload relays
8. Supplementary Contact Symbols and Terms
* Breaks, poles, throws
* Single break, double break
* Single pole, double pole
* Single throw, double throw
9. Manual Switches – Functionality and Symbology
* Selector switches
* Push buttons
* Drum and foot switches
10. Automatic Switches
* Limit switches
* Temperature, pressure, flow and float switches
* Motion switches,
* Proximity and photo switches,
11. Troubleshooting Suggestion
* Measuring ohms, voltage and current
* Open faults and shorts
* Using the proper tools and meters
* Logical and sequential troubleshooting methods
* Meter categories and types
* Safety and precautions
12. Ground – Fault and Overload Protection
* Conductor sizing
* Ground-fault protection devices and sizing
* Motor starter sizing
* Motor overload protection sizing
* Disconnect sizing
13. Motor Overload Protection
* Thermal overloads
* Bimetallic overloads
* Magnetic overloads
* Solid-state overloads
14. Application Specific Circuits
* Common pumping circuits
* Common heating/cooling circuits
15. Safety Awareness
* Electrical safety
* Lockout/tagout procedures
* Safe work practices
* Personal protective equipment (PPE)
METHOD
Presentation
Discussion
Case Study
Evaluation
