This unit covers assessing generator/alternator operation, and testing and repairing and/or replacing generators and alternators.

Unit details

Location:
Study level:
Vocational and further education (TAFE)
Unit code:
MEM18037B

Prerequisites

MEM09002B - Interpret technical drawing

MEM12023A - Perform engineering measurements

MEM18001C - Use hand tools

MEM18002B - Use power tools/hand held operations

MEM18030B - Diagnose and rectify low voltage electrical systems

MEM18055B - Dismantle, replace and assemble engineering components

Assessment

Assessment tasks will be designed to reinforce and extend knowledge and skill competence within set and controlled parameters in accordance with each unit's learning outcomes and performance criteria requirements, including the setting of work based practical application tasks designed to provide evidence of competence outcomes, within periodic and scheduled timelines. Students will be expected to demonstrate the following required skills: - reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents; - planning and sequencing operations; - checking task-related information; - checking for conformance to specification; - testing the charging system for correct operation; - recording variations from system specifications; - dismantling and reassembling given generators/alternators; - identifying charging faults in given generator/alternator systems; - conducting short circuit and winding continuity tests; - testing the given alternator/generator output for conformance to specification; - testing given voltage and current regulators, cut-outs and relays for correct operation and conformance to specifications; - determining the condition of given power/exciter diodes; - replacing faulty components; - checking the given generator/alternator charging system for excessive voltage drops; - undertaking calculations and numerical operations within the scope of this unit, and; - recording and reporting service activities.Students will also be expected to demonstrate the following knowledge: - the concepts of magnetism, electromagnetism and induced voltage; - the construction of generators; - the principles of operation of generators and alternators; - the methods of generating alternating and direct current for low voltage systems; - the methods of regulating voltage and current generated; - the function of diode and condenser types of regulator; - the tests that can be used to check the performance of the charging system; - the test procedures; - the hazards associated with testing the performance of the charging system, including housekeeping; - the charging system specifications; - the test equipment to be used in checking low voltage charging systems; - the procedures for recording charging system performance/variations from specifications; - the procedures for dismantling and reassembling generators/alternators; - the tools and equipment to be used in dismantling and reassembling generators/alternators; - the safety precautions and work procedures to be followed when working with generators/alternators; - the procedures and test equipment for identifying charging faults; - the procedures and test equipment for testing short circuits and winding continuity; - the specifications of generator/alternator output; - the test equipment and procedures to be used to determine alternator/generator output; - the procedures for testing voltage and current regulators, cut-outs and relays; - the methods of adjusting voltage and current regulators, cut-outs and relays; - the operational specifications of voltage and current regulators, cut-outs and relays; - the test equipment to be used to check the operation of voltage and current regulators, cut-outs and relays; - the procedures for testing diodes and the test equipment to be used; - the precautions to be taken when testing diodes, and; - the components of generators/alternators that can be replaced.

Where to next?

As part of a course

This unit is studied as part of the following courses. Refer to the course page for information on how to apply for the course.

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