Description of the Task 1. Investigate electric power distribution methods and explore their effects on electronically controlled processes in the industry. Your research will demonstrate your understanding and confidence in addressing the following items: [20 Marks] a) Describe how to apply fuses, circuit breakers, and overload relays to protect power systems and to protect equipment. [5 Marks] b) List the limitations of the protective devices. [5 Marks] c) Describe and calculate the low voltages to equipment caused by the line loss and by poor power factor. [10 Marks] d) Explain how to protect electrical and electronic equipment from power surges and power line transients. [10 Marks] e) Illustrate the major differences between single phase and three phase power systems in the manner in which they are used to supply electrical and electronic equipment. [10 Marks] f) Describe the construction of proper grounding systems for personal safety and for proper equipment operation. [10 Marks] 2. You are a technical expert working on installing control equipment in a car manufacturing plant. New electrical equipment is being added on weekly bases to increase the production. There have been three problems in operation over the past few weeks: a) Relays are dropping out periodically when they should stay energised. [5 Marks] b) Computers are causing random erroneous equipment movements. [5 Marks] c) Motors on the plant are burning out in spite of the use of the lowest possible value of fuse in its feeder circuits. [5 Marks] What actions for correction can you look into? Explain fully your answer by quoting your investigations in the above. Also, give a brief account of your learning reflection as the summary of your findings. [15 Marks]
