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Evidence Guide: UEEEC0028 - Fault find and repair complex power supplies

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

UEEEC0028 - Fault find and repair complex power supplies

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare to find and repair faults in complex power supplies

  1. Work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures for relevant work area are identified, obtained and applied
Work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures for relevant work area are identified, obtained and applied

Completed
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WHS/OHS risk control measures are applied in accordance with workplace procedures prior to commencing work

Completed
Date:

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Nature of the fault is obtained from documentation or discussions with relevant person/s to determine scope of work

Completed
Date:

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Relevant person/s is consulted to ensure the work is coordinated effectively with others

Completed
Date:

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Materials required for the work are determined in accordance with workplace procedures

Completed
Date:

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Tools, equipment and testing devices required for work are obtained in accordance with workplace procedures and checked for correct operation and safety

Completed
Date:

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Find and repair faults

  1. WHS/OHS risk control measures and procedures are applied
WHS/OHS risk control measures and procedures are applied

Completed
Date:

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Need to test and measure live work is determined in accordance with WHS/OHS requirements and workplace procedures

Completed
Date:

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Apparatus is isolated, as required, in accordance with WHS/OHS requirements and workplace procedures

Completed
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Fault finding is approached methodically, applying principles of complex power supplies, analysing faults through reference to block and schematic diagrams and using measured and calculated values of power supply parameters

Completed
Date:

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Apparatus components are dismantled, as necessary, and parts stored to protect against loss or damage

Completed
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Faulty components are rechecked and their fault status confirmed

Completed
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Materials required for repair work are sourced and obtained in accordance with workplace procedures

Completed
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Effectiveness of the repair is tested in accordance with workplace procedures

Completed
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Apparatus is reassembled, tested and prepared for return to customer

Completed
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Unplanned situations are dealt with safely and with approval of relevant person/s

Completed
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Fault-finding and repair activities are carried out efficiently without waste of materials, damage to apparatus, the surrounding environment or services applying sustainable energy practices

Completed
Date:

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Complete and report repair activities

  1. WHS/OHS risk control measures and workplace procedures are applied
WHS/OHS risk control measures and workplace procedures are applied

Completed
Date:

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Work area is cleaned and made safe in accordance with workplace procedures

Completed
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Justification is made in the required format for repairs to apparatus

Completed
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Work completion is documented in accordance with workplace procedures and relevant person/s notified

Completed
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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least two separate occasions and include:

applying methodical fault-finding techniques

applying relevant risk identification, assessment, reporting and control requirements

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements

applying sustainable energy principles and practices

coordinating work with relevant person/s

dealing effectively with unplanned events

determining live testing/measurement requirements

determining scope of work

efficiently finding faults

finding and repairing faults in complex power supplies

identifying and accessing materials, tools, apparatus and testing devices

isolating circuits/machines/system

providing justification for the repairs

replacing components without damage

selecting relevant test equipment and test methods

making and analysing measurements to verify circuit operation.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

complex power supplies fault finding and repair

off-line switching regulators

relevant manufacturer specifications

relevant safe work method statements (SWMS)/job safety assessments or risk mitigation processes

relevant standards, codes and regulations

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures

relevant principles of switching regulation

series regulation

series regulator employing closed loop control

switching regulation - closed loop control of output

block and schematic diagrams for typical power supply circuits

heatsink selection considerations

circuit protection methods - crowbar and current-limiting

verification of circuit operation

fault-finding techniques

electromagnetic radiation (EMR) considerations with switch mode supplies

inductance and transformer theory

diode and semiconductor basics

rectification and filtering.

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

Finding and repairing faults in complex power supplies must include at least the following:

fault finding two faults in each of the following types of power supply:

linear regulated power supply

switch mode power supply