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Evidence Guide: UEEIC0042 - Solve problems in single phase electronic power control circuits

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

 

UEEIC0042 - Solve problems in single phase electronic power control circuits

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

Identify problems in single phase electronic power control system

  1. WHS/OHS requirements and workplace procedures are identified and applied
WHS/OHS requirements and workplace procedures are identified and applied

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Hazards are identified, risks are assessed and control measures implemented

Completed
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Extent of single phase electronic power control problems are determined from performance specifications, situation reports and consultations with relevant person/s

Completed
Date:

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Activities are planned to meet scheduled timelines in consultation with relevant person/s

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Solve problems in single phase electronic power control system

  1. WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
WHS/OHS risk control measures and workplace procedures for carrying out the work are followed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Single phase electronic power control devices, circuit operation characteristics and applications are used to develop solutions for control problems

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Parameters, specifications and performance requirements in relation to each single phase electronic power control problem are obtained in accordance with workplace procedures

Completed
Date:

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Approaches to resolving single phase electronic power control problems are evaluated to provide most effective solutions

Completed
Date:

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Unplanned situations are responded to in accordance with workplace procedures in a manner that minimises risk to personnel and equipment

Completed
Date:

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Problems are solved efficiently using sustainable energy practices without waste of materials, damaging apparatus, the surrounding environment or services in accordance with workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test and document solutions to single phase electronic power control

  1. WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
WHS/OHS risk control measures and workplace procedures for carrying out the work are followed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Solutions to single phase electronic power control problems are tested to determine effectiveness and modified as necessary

Completed
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Adopted solutions are documented, including instructions for implementation, incorporating risk control measures

Completed
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Justification for solutions used to solve single phase electronic power control problems are documented in accordance with workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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 relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including implementing risk control measures

applying sustainable energy principles and practices

evaluating problem resolutions, testing for effectiveness and modifying as required

meeting scheduled timelines

preparing and solving problems in single phase electronic power control systems

using tools, equipment and testing devices

obtaining and checking tools and equipment

dealing with unplanned events/situations in accordance with workplace procedures in a manner that minimises risk to personnel and equipment.

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:

introduction to power control, including:

advantages and benefits of power control

need for power control and typical applications

power control methods

types of solid-state switches

block diagram of a power converter

power control terminology

modes of operation

single phase power rectifiers, including:

single phase rectifier circuit configurations

resistive/inductive loads

output voltages/waveforms

ripple voltage frequency

peak reverse voltages

freewheeling diodes

silicon controlled rectifiers (SCRs), including:

construction and symbol

basic operating principles

characteristics

gate requirements

commutation

electrical ratings

testing SCRs

applications

triacs and gate turn off (GTO) thyristors, including:

triac construction and symbol

triac basic operating principles

triac characteristics

triac triggering modes

triac electrical ratings

triac testing

GTO construction and symbol

GTO basic operating principles

GTO characteristics

GTO electrical ratings

applications for triac and GTOs

power transistors bipolar junction transistor (BJT), including:

BJT construction and symbol

BJT basic operating principles

BJT characteristics

BJT electrical ratings

BJT testing

applications for BJTs

power field effect transistors (FET), including:

types of FETs used for power control

power FETs construction and symbol

FET basic operating principles and characteristics

insulated gate bipolar transistor (IGBT) basic operating principles and characteristics

power FET electrical ratings

power FET Testing

applications for power FETs

triggering devices diac, including:

construction and symbol

operating principles

breakover voltage

unijunction transistors (UJTs)

construction and symbol

operating principles

intrinsic stand-off ratio and peak point voltage

programmable unijunction transistors (PUTs) including:

construction and symbol

operating principles

programmable standoff ratio

peak point voltage

triggering circuits, including:

R-C time constant circuits

diac trigger circuit operation

UJT relaxation oscillator circuit operation

PUT relaxation oscillator circuit

half wave-controlled rectification, including:

phase shift control

controlled rectifiers

controlled rectifier power output control

single phase half wave-controlled rectifier

circuit configuration

circuit operation

waveforms

load voltage

applications and limitations

problems associated with phase shift control

full wave-controlled bridge rectification including:

single phase full wave-controlled bridge rectifier circuit

output voltage

output waveforms

applications and limitations

advantages and disadvantages

fully controlled bridge rectification, including:

single phase fully controlled rectifier bridge circuit

output voltage

output waveforms

applications and limitations

advantages and disadvantages

single phase alternating current (a.c.) voltage control, including:

phase control of a.c. power

circuit configurations - half and full control circuits

triggering circuits

circuit performance and operation on resistive and inductive loads

output voltage and waveform, determination of output voltage using circuit characteristics

range of control with inductive loads

triggering problems associated with inductive loads

applications and limitations

zero voltage switching (ZVS), including:

operating principles

circuit configuration, including trigger circuits

circuit operation and waveforms resistive loads only

relationship between load power and conduction time

solid state relays: types and ratings

applications and limitations

fault finding of power control circuits, including:

fault-finding procedures

typical faults power and trigger circuits

characteristics displayed by common faults

comparison of test data with expected data (voltage/current waveforms)

location and replacement of faulty components

job safety assessments or risk mitigation processes, including risk control measures

relevant manufacturer specifications

relevant tools, equipment and testing devices

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures

single phase electronic power control circuits

solutions to single phase electronic power control problems

sustainable energy principles and practices.

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.

Solving electrical problems must include at least four of the following:

single phase electronic power control systems