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.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate workplace conditions.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Resources for assessment must include access to:

a range of relevant exercises, case studies and/or other simulations

relevant and appropriate materials, tools, equipment and personal protective equipment (PPE) currently used in industry

applicable documentation, including workplace procedures, equipment specifications, regulations, codes of practice and operation manuals.

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

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.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate workplace conditions.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Resources for assessment must include access to:

a range of relevant exercises, case studies and/or other simulations

relevant and appropriate materials, tools, equipment and personal protective equipment (PPE) currently used in industry

applicable documentation, including workplace procedures, equipment specifications, regulations, codes of practice and operation manuals.