Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MARL018 Mapping and Delivery Guide
Apply advanced principles of marine electrotechnology

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency MARL018 - Apply advanced principles of marine electrotechnology
Description
Employability Skills
Learning Outcomes and Application This unit involves the skills and knowledge required to explain advanced marine electrotechnology principles and to perform advanced electrical calculations.This unit applies to the work of a Marine Engineer Class 1 on commercial vessels of unlimited propulsion power and forms part of the requirements for the Certificate of Competency Marine Engineer Class 1 issued by the Australian Maritime Safety Authority (AMSA).No licensing, legislative or certification requirements apply to this unit at the time of publication.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

Assessors must satisfy National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) assessor requirements.

Assessment must satisfy the National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) standards.

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.

Assessment must occur in workplace operational situations or where these are not available, in simulated workplace operational situations or an industry-approved marine operations site that replicates workplace conditions where advanced principles of marine electrotechnology can be applied.

Resources for assessment include access to:

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

electrical diagrams, specifications and other information required for performing advanced electrical calculations

relevant regulatory and equipment documentation that impacts on work activities

technical reference library with current publications on marine electrotechnology

tools, equipment, materials and personal protective equipment currently used in industry.

Performance should be demonstrated consistently over time and in a suitable range of contexts.
Prerequisites/co-requisites
Competency Field L – Marine Engineering
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Analyse circuits incorporating resistance, inductance and capacitive elements
  • Mathematical problems involving resistor inductor (RL) and resistor capacitor (RC) combinations in direct current (DC) circuits are solved
  • Mathematical problems involving resistive, inductive and capacitive reactance and overall circuit impedance in alternating current (AC) circuits are solved
  • Why large power factors are desirable in AC circuits is explained
  • Mathematical problems related to power factor correction mechanisms are solved
  • Conditions for resonance in series and parallel RLC circuit combinations are analysed
  • Mathematical problems involving resonance in series and parallel RLC circuit combinations are solved
  • Differing consequences of resonance to both RLC series and RLC parallel circuit are illustrated
       
Element: Apply complex number theory to analyse AC circuit performance
  • J operator is explained
  • Rectangular notation of j operator is related to comparable trigonometric and polar notations
  • J operator is used in the addition and subtraction of phasors, applying the most appropriate notation to the solution of phasor problems involving current, voltage and impedance
  • Conductance, admittance and susceptance are distinguished from each other in terms of resistance, impedance and the j operator
  • Problems involving RL and C elements in different circuit combinations using j operator theory are solved
  • Power in AC circuit applications using j operator theory is calculated
       
Element: Analyse operating principles of electrical instrumentation
  • Mathematical calculations are performed to demonstrate how moving coil and moving iron instruments may have their ranges changed
  • Mathematical calculations are performed to demonstrate how dynamometer type wattmeters may have their measuring ranges extended
  • Construction, operating principles and functions of electrical meters are outlined
  • Principal methods and instruments used in resistance measurement are detailed
  • Resistance measurements are conducted and verified using appropriate electrical instrumentation
       
Element: Analyse operating principles of DC generators
  • EMF equation is applied to solve problems related to DC generators
  • Losses that may occur in DC generators are analysed
  • Appropriate parametric relationships for DC generator losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved
  • Basic principles of DC armature winding techniques are explained
  • Generator armature reaction is explained
  • Expression for armature EMF is derived and applied to solve problems related to DC generators
  • Commutator arcing and how this might be minimised or eliminated is explained
  • Open circuit and load characteristic curves for separately excited, shunt, and compound wound DC generators are derived
       
Element: Analyse operating principles of DC motors
  • DC torque equation is applied to solve problems related to DC motors
  • Losses that may occur in DC motors are analysed
  • Appropriate parametric relationships for DC motor losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved
  • Speed equation for a DC motor is derived and corresponding characteristics for different winding configurations are sketched
  • Speed equation and characteristics of different DC motor configurations are applied to explain how DC motor speed may be controlled
  • Reasons for armature reaction and methods of compensating for its effects are identified
  • Why DC motors need variable starting resistors are explained
       
Element: Compare operation of synchronous motors and generators
  • Marine applications of synchronous motors and generators are identified
  • Mathematical expression for the magnitude and rotational speed of the magnetic field produced by a three-phase supply is derived
  • Operating principle of synchronous motors is explained
  • Operation of synchronous motors and generators are compared and contrasted
  • Problems using phasor diagrams and mathematical expressions involving the effects of loads and excitation on synchronous motors are solved
  • Advantages and disadvantages of AC synchronous motors and generators are analysed
       
Element: Analyse operation of single and three phase transformers
  • Basic transformation ratio and EMF equation for an ideal transformer is derived
  • No load and on load phasor diagrams for an ideal transformer are constructed, with negligible voltage drop through its windings
  • Causes of actual transformer losses are explained and relationships associated with the transformer equivalent circuit are derived
  • Open circuit and short circuit tests are applied to calculate transformer efficiency and voltage regulation
  • Problems related to the operation of auto-transformers are solved
       
Element: Analyse requirements for parallel operation of AC and DC generators
  • Conditions required for shunt, series and compound wound DC generators to operate in parallel are identified
  • Numerical problems related to parallel operation of shunt, series and compound wound DC generators are solved
  • Conditions required for AC generators to operate in parallel are identified
  • Numerical problems related to parallel operation of AC generators are solved
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Analyse circuits incorporating resistance, inductance and capacitive elements

1.1

Mathematical problems involving resistor inductor (RL) and resistor capacitor (RC) combinations in direct current (DC) circuits are solved

1.2

Mathematical problems involving resistive, inductive and capacitive reactance and overall circuit impedance in alternating current (AC) circuits are solved

1.3

Why large power factors are desirable in AC circuits is explained

1.4

Mathematical problems related to power factor correction mechanisms are solved

1.5

Conditions for resonance in series and parallel RLC circuit combinations are analysed

1.6

Mathematical problems involving resonance in series and parallel RLC circuit combinations are solved

1.7

Differing consequences of resonance to both RLC series and RLC parallel circuit are illustrated

2

Apply complex number theory to analyse AC circuit performance

2.1

J operator is explained

2.2

Rectangular notation of j operator is related to comparable trigonometric and polar notations

2.3

J operator is used in the addition and subtraction of phasors, applying the most appropriate notation to the solution of phasor problems involving current, voltage and impedance

2.4

Conductance, admittance and susceptance are distinguished from each other in terms of resistance, impedance and the j operator

2.5

Problems involving RL and C elements in different circuit combinations using j operator theory are solved

2.6

Power in AC circuit applications using j operator theory is calculated

3

Analyse operating principles of electrical instrumentation

3.1

Mathematical calculations are performed to demonstrate how moving coil and moving iron instruments may have their ranges changed

3.2

Mathematical calculations are performed to demonstrate how dynamometer type wattmeters may have their measuring ranges extended

3.3

Construction, operating principles and functions of electrical meters are outlined

3.4

Principal methods and instruments used in resistance measurement are detailed

3.5

Resistance measurements are conducted and verified using appropriate electrical instrumentation

4

Analyse operating principles of DC generators

4.1

EMF equation is applied to solve problems related to DC generators

4.2

Losses that may occur in DC generators are analysed

4.3

Appropriate parametric relationships for DC generator losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved

4.4

Basic principles of DC armature winding techniques are explained

4.5

Generator armature reaction is explained

4.6

Expression for armature EMF is derived and applied to solve problems related to DC generators

4.7

Commutator arcing and how this might be minimised or eliminated is explained

4.8

Open circuit and load characteristic curves for separately excited, shunt, and compound wound DC generators are derived

5

Analyse operating principles of DC motors

5.1

DC torque equation is applied to solve problems related to DC motors

5.2

Losses that may occur in DC motors are analysed

5.3

Appropriate parametric relationships for DC motor losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved

5.4

Speed equation for a DC motor is derived and corresponding characteristics for different winding configurations are sketched

5.5

Speed equation and characteristics of different DC motor configurations are applied to explain how DC motor speed may be controlled

5.6

Reasons for armature reaction and methods of compensating for its effects are identified

5.7

Why DC motors need variable starting resistors are explained

6

Compare operation of synchronous motors and generators

6.1

Marine applications of synchronous motors and generators are identified

6.2

Mathematical expression for the magnitude and rotational speed of the magnetic field produced by a three-phase supply is derived

6.3

Operating principle of synchronous motors is explained

6.4

Operation of synchronous motors and generators are compared and contrasted

6.5

Problems using phasor diagrams and mathematical expressions involving the effects of loads and excitation on synchronous motors are solved

6.6

Advantages and disadvantages of AC synchronous motors and generators are analysed

7

Analyse operation of single and three phase transformers

7.1

Basic transformation ratio and EMF equation for an ideal transformer is derived

7.2

No load and on load phasor diagrams for an ideal transformer are constructed, with negligible voltage drop through its windings

7.3

Causes of actual transformer losses are explained and relationships associated with the transformer equivalent circuit are derived

7.4

Open circuit and short circuit tests are applied to calculate transformer efficiency and voltage regulation

7.5

Problems related to the operation of auto-transformers are solved

8

Analyse requirements for parallel operation of AC and DC generators

8.1

Conditions required for shunt, series and compound wound DC generators to operate in parallel are identified

8.2

Numerical problems related to parallel operation of shunt, series and compound wound DC generators are solved

8.3

Conditions required for AC generators to operate in parallel are identified

8.4

Numerical problems related to parallel operation of AC generators are solved

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 one occasion and include:

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

assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices

identifying and applying relevant mathematical formulas and techniques to solve complex problems related to marine electrotechnology

identifying and interpreting numerical and graphical information, and performing mathematical calculations to perform tasks such as using phasor diagrams and mathematical expressions to explain the effects of loads and excitation on synchronous motors

identifying, collating and processing information required to perform complex calculations related to marine electrotechnology

imparting knowledge and ideas through verbal, written and visual means

reading and interpreting written information needed to perform complex electrical calculations

solving problems using appropriate laws and principles

using calculators to perform complex mathematical calculations.

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:

AC principles

advanced principles of marine electrotechnology

circuits:

resistance

inductance

capacitance

complex number theory

DC generators

DC motors

difference between AC and DC

electrical:

circuits

current

power

safety

units of measurement

electromagnetic:

force

induction

electrical meters:

energy meters

frequency meters

induction disc watt meters

power factor meters

Ohm’s Law

operating principles of:

DC generators

DC motors

electrical instrumentation

parallel circuits

parallel operation of AC and DC generators

power factor

power factor correction mechanisms

resistance

single and threephase transformers

synchronous motors and generators

WHS/OHS requirements and work practices.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Analyse circuits incorporating resistance, inductance and capacitive elements

1.1

Mathematical problems involving resistor inductor (RL) and resistor capacitor (RC) combinations in direct current (DC) circuits are solved

1.2

Mathematical problems involving resistive, inductive and capacitive reactance and overall circuit impedance in alternating current (AC) circuits are solved

1.3

Why large power factors are desirable in AC circuits is explained

1.4

Mathematical problems related to power factor correction mechanisms are solved

1.5

Conditions for resonance in series and parallel RLC circuit combinations are analysed

1.6

Mathematical problems involving resonance in series and parallel RLC circuit combinations are solved

1.7

Differing consequences of resonance to both RLC series and RLC parallel circuit are illustrated

2

Apply complex number theory to analyse AC circuit performance

2.1

J operator is explained

2.2

Rectangular notation of j operator is related to comparable trigonometric and polar notations

2.3

J operator is used in the addition and subtraction of phasors, applying the most appropriate notation to the solution of phasor problems involving current, voltage and impedance

2.4

Conductance, admittance and susceptance are distinguished from each other in terms of resistance, impedance and the j operator

2.5

Problems involving RL and C elements in different circuit combinations using j operator theory are solved

2.6

Power in AC circuit applications using j operator theory is calculated

3

Analyse operating principles of electrical instrumentation

3.1

Mathematical calculations are performed to demonstrate how moving coil and moving iron instruments may have their ranges changed

3.2

Mathematical calculations are performed to demonstrate how dynamometer type wattmeters may have their measuring ranges extended

3.3

Construction, operating principles and functions of electrical meters are outlined

3.4

Principal methods and instruments used in resistance measurement are detailed

3.5

Resistance measurements are conducted and verified using appropriate electrical instrumentation

4

Analyse operating principles of DC generators

4.1

EMF equation is applied to solve problems related to DC generators

4.2

Losses that may occur in DC generators are analysed

4.3

Appropriate parametric relationships for DC generator losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved

4.4

Basic principles of DC armature winding techniques are explained

4.5

Generator armature reaction is explained

4.6

Expression for armature EMF is derived and applied to solve problems related to DC generators

4.7

Commutator arcing and how this might be minimised or eliminated is explained

4.8

Open circuit and load characteristic curves for separately excited, shunt, and compound wound DC generators are derived

5

Analyse operating principles of DC motors

5.1

DC torque equation is applied to solve problems related to DC motors

5.2

Losses that may occur in DC motors are analysed

5.3

Appropriate parametric relationships for DC motor losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved

5.4

Speed equation for a DC motor is derived and corresponding characteristics for different winding configurations are sketched

5.5

Speed equation and characteristics of different DC motor configurations are applied to explain how DC motor speed may be controlled

5.6

Reasons for armature reaction and methods of compensating for its effects are identified

5.7

Why DC motors need variable starting resistors are explained

6

Compare operation of synchronous motors and generators

6.1

Marine applications of synchronous motors and generators are identified

6.2

Mathematical expression for the magnitude and rotational speed of the magnetic field produced by a three-phase supply is derived

6.3

Operating principle of synchronous motors is explained

6.4

Operation of synchronous motors and generators are compared and contrasted

6.5

Problems using phasor diagrams and mathematical expressions involving the effects of loads and excitation on synchronous motors are solved

6.6

Advantages and disadvantages of AC synchronous motors and generators are analysed

7

Analyse operation of single and three phase transformers

7.1

Basic transformation ratio and EMF equation for an ideal transformer is derived

7.2

No load and on load phasor diagrams for an ideal transformer are constructed, with negligible voltage drop through its windings

7.3

Causes of actual transformer losses are explained and relationships associated with the transformer equivalent circuit are derived

7.4

Open circuit and short circuit tests are applied to calculate transformer efficiency and voltage regulation

7.5

Problems related to the operation of auto-transformers are solved

8

Analyse requirements for parallel operation of AC and DC generators

8.1

Conditions required for shunt, series and compound wound DC generators to operate in parallel are identified

8.2

Numerical problems related to parallel operation of shunt, series and compound wound DC generators are solved

8.3

Conditions required for AC generators to operate in parallel are identified

8.4

Numerical problems related to parallel operation of AC generators are solved

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

Electrical meters include one or more of the following:

energy meters

frequency meters

induction disc watt meters

power factor meters

Problems include one or more of the following:

tapping point

turns

voltages

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Mathematical problems involving resistor inductor (RL) and resistor capacitor (RC) combinations in direct current (DC) circuits are solved 
Mathematical problems involving resistive, inductive and capacitive reactance and overall circuit impedance in alternating current (AC) circuits are solved 
Why large power factors are desirable in AC circuits is explained 
Mathematical problems related to power factor correction mechanisms are solved 
Conditions for resonance in series and parallel RLC circuit combinations are analysed 
Mathematical problems involving resonance in series and parallel RLC circuit combinations are solved 
Differing consequences of resonance to both RLC series and RLC parallel circuit are illustrated 
J operator is explained 
Rectangular notation of j operator is related to comparable trigonometric and polar notations 
J operator is used in the addition and subtraction of phasors, applying the most appropriate notation to the solution of phasor problems involving current, voltage and impedance 
Conductance, admittance and susceptance are distinguished from each other in terms of resistance, impedance and the j operator 
Problems involving RL and C elements in different circuit combinations using j operator theory are solved 
Power in AC circuit applications using j operator theory is calculated 
Mathematical calculations are performed to demonstrate how moving coil and moving iron instruments may have their ranges changed 
Mathematical calculations are performed to demonstrate how dynamometer type wattmeters may have their measuring ranges extended 
Construction, operating principles and functions of electrical meters are outlined 
Principal methods and instruments used in resistance measurement are detailed 
Resistance measurements are conducted and verified using appropriate electrical instrumentation 
EMF equation is applied to solve problems related to DC generators 
Losses that may occur in DC generators are analysed 
Appropriate parametric relationships for DC generator losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved 
Basic principles of DC armature winding techniques are explained 
Generator armature reaction is explained 
Expression for armature EMF is derived and applied to solve problems related to DC generators 
Commutator arcing and how this might be minimised or eliminated is explained 
Open circuit and load characteristic curves for separately excited, shunt, and compound wound DC generators are derived 
DC torque equation is applied to solve problems related to DC motors 
Losses that may occur in DC motors are analysed 
Appropriate parametric relationships for DC motor losses, together with expressions for output power and efficiency are derived and associated numerical problems are solved 
Speed equation for a DC motor is derived and corresponding characteristics for different winding configurations are sketched 
Speed equation and characteristics of different DC motor configurations are applied to explain how DC motor speed may be controlled 
Reasons for armature reaction and methods of compensating for its effects are identified 
Why DC motors need variable starting resistors are explained 
Marine applications of synchronous motors and generators are identified 
Mathematical expression for the magnitude and rotational speed of the magnetic field produced by a three-phase supply is derived 
Operating principle of synchronous motors is explained 
Operation of synchronous motors and generators are compared and contrasted 
Problems using phasor diagrams and mathematical expressions involving the effects of loads and excitation on synchronous motors are solved 
Advantages and disadvantages of AC synchronous motors and generators are analysed 
Basic transformation ratio and EMF equation for an ideal transformer is derived 
No load and on load phasor diagrams for an ideal transformer are constructed, with negligible voltage drop through its windings 
Causes of actual transformer losses are explained and relationships associated with the transformer equivalent circuit are derived 
Open circuit and short circuit tests are applied to calculate transformer efficiency and voltage regulation 
Problems related to the operation of auto-transformers are solved 
Conditions required for shunt, series and compound wound DC generators to operate in parallel are identified 
Numerical problems related to parallel operation of shunt, series and compound wound DC generators are solved 
Conditions required for AC generators to operate in parallel are identified 
Numerical problems related to parallel operation of AC generators are solved 

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MARL018 - Apply advanced principles of marine electrotechnology
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MARL018 - Apply advanced principles of marine electrotechnology

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