MEM27010 — Diagnose and rectify low voltage charging systems

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What an assessment for MEM27010 must cover

44 assessable components: 3 elements (15 performance criteria), 9 performance evidence and 20 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Determine job requirements

1.1Follow standard operating procedures (SOPs)
1.2Comply with work health and safety (WHS) requirements at all times
1.3Use appropriate personal protective equipment (PPE) in accordance with SOPs
1.4Identify job requirements from specifications, drawings, job sheets or work instructions

2 Assess generator/ alternator operation

2.1Apply principles of magnetism, induced voltage and electromagnetism when assessing generator/alternator operation
2.2Apply alternating and direct current generating principles, voltage/current regulation methods and types and action of diodes/condensers in generator/alternator operation to assess generator/alternator operation
2.3Check charging system performance and record variances from system specifications

3 Test and rectify generators/ alternators

3.1Dismantle and assemble generators/alternators to specifications
3.2Determine charging faults to component level
3.3Perform testing to determine shorts to ground, turn shorts and winding continuity
3.4Test alternator/generator for normal and maximum output
3.5Test voltage and/or current regulators and cut-outs and relays and adjust to specification
3.6Determine condition of power/exciter diodes
3.7Replace all faulty components according to manufacturers’ recommendations
3.8Ensure charging system is free of excessive voltage drops and connections are soldered, tightened and insulated

Performance evidence

following work instructions, standard operating procedures (SOPs) and safe work practices
identifying and interpreting specifications, charts, lists, drawings and service documents to diagnose and rectify low voltage charging systems
checking and testing the charging system for correct operation and conformance and recording any variations from system specifications
dismantling/reassembling given generators and alternators using appropriate tooling, techniques and procedures and replacing faulty components
identifying charging faults and conducting tests for short circuit and winding continuity tests
undertaking calculations and numerical operations in diagnosing and rectifying low voltage charging systems
testing current and voltage regulators, cut-outs and relays for correct operation and determining the condition of given power/exciter diodes to specifications
testing the output of the generator/alternator for compliance to specifications, including the charging system for excessive voltage drops
recording/reporting all service activities in accordance with SOPs

Knowledge evidence

safe work practices and procedures and use of personal protective equipment (PPE)
concepts of magnetism, electromagnetism and induced voltage
construction and principles of operation of generators and alternators
methods of generating alternating and direct current for low voltage systems
methods of regulating voltage and current generated
function of diode and condenser types of regulator
tests and test procedures that can be used to check the performance of the charging system
charging system specifications and procedures for recording charging system performance/variations from specifications
dismantling and reassembling generators/alternators and tools and equipment to be used
identifying charging faults, testing short circuits and winding continuity and test equipment to be used
testing and methods of adjusting voltage and current regulators, cut-outs and relays
testing diodes with the appropriate test equipment and precautions to be taken
specifications of generator/alternator output and test equipment and procedures to be used to determine alternator/generator output
operational specifications and test equipment to be used to check the operation of voltage and current regulators, cut-outs and relays
components of generators/alternators that can be replaced
specifications of the faulty generator/alternator components
effect and causes of voltage drops on charging system operation/ performance and procedures to be taken when checking for excessive voltage drops
effect of loose, poorly soldered and/or inappropriate insulation on charging system operation
parameters which determine repair or replacement
specifications of all circuit connections

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Real, unedited Auditori output (RIIHAN201E shown), branded for a sample RTO:

Questions about assessing MEM27010

What does an assessment tool for MEM27010 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEM27010 needs to address all 44 unit components: 3 elements with 15 performance criteria, 9 performance evidence requirements, 20 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for MEM27010?

Auditori pulls the current release of MEM27010 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEM27010 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MEM27010 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEM27010, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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