Course Title: Solve problems in single and three phase low voltage machines

Part B: Course Detail

Teaching Period: Term1 2016

Course Code: EEET7023C

Course Title: Solve problems in single and three phase low voltage machines

School: 130T Vocational Engineering

Campus: City Campus

Program: C6120 - Advanced Diploma of Engineering Technology - Electrical

Course Contact: Program Manager

Course Contact Phone: +61 3 9925 4468

Course Contact Email: vocengineering@rmit.edu.au


Name and Contact Details of All Other Relevant Staff

Marko Dumovic
Ph: + 61 3 99254712
Email: marko.dumovic@rmit.edu.au  

Appointment by email

 

Nominal Hours: 80

Regardless of the mode of delivery, represent a guide to the relative teaching time and student effort required to successfully achieve a particular competency/module. This may include not only scheduled classes or workplace visits but also the amount of effort required to undertake, evaluate and complete all assessment requirements, including any non-classroom activities.

Pre-requisites and Co-requisites

UEENEEE101A + UEENEEE102A + UEENEEE104A + UEENEEE105A + UEENEEE107A + UEENEEG101A + UEENEEG102A + UEENEEG106A

Course Description

This unit covers ascertaining correct operation of single and three phase machines and solving machine problems as they apply to servicing, fault finding, installation and compliance work functions. It encompasses safe working practices, machine connections circuit arrangements, issues related to machine operation, characteristics and protection and solutions to machine problems derived from calculated and measured parameters.


National Codes, Titles, Elements and Performance Criteria

National Element Code & Title:

UEENEEG006A Solve problems in single and three phase low voltage machines

Element:

1. Prepare to solve single and three phase low voltage machines problems.

Element:

2. Solve single and three phase low voltage machine problems.

Element:

3. Complete work and document problem solving activities.


Learning Outcomes


Refer to Elements


Details of Learning Activities

You will involve in the following learning activities to meet requirements for this competency and stage 1 competencies for Engineering Associates

• Lectures
• Tutorials
• Practical laboratory tests
• Reports
• Guest speakers
• Site visit(s)


Engineers Australia Mapping Information:

This course is mapped against stage 1 competencies for Engineering Associates developed by Engineers Australia as detailed below:

EA 1. Knowledge and Skill Base

EA1.1. Descriptive, formula-based understanding of the underpinning natural and physical sciences and the engineering fundamentals applicable to the practice area.
EA 1.2. Procedural-level understanding of the mathematics, numerical analysis, statistics, and computer and information sciences which underpin the practice area.
EA 1.3. In depth practical knowledge and skills within specialist sub-disciplines of the practice area.
EA 1.4. Discernment of engineering developments within the practice area.
EA 1.5. Knowledge of contextual factors impacting the practice area.
EA 1.6. Understanding of the scope, principles, norms, accountabilities and bounds of contemporary engineering practice in the area of practice.

EA 2. Engineering Application Ability

EA 2.1. Application of established technical and practical methods to the solution of well-defined engineering problems.
EA 2.2. Application of technical and practical techniques, tools and resources to well defined engineering problems.
EA 2.3. Application of systematic synthesis and design processes to well defined engineering problems.
EA 2.4. Application of systematic project management processes.
EA 3. Professional and Personal Attributes

EA 3.1. Ethical conduct and professional accountability.
EA 3.2. Effective oral and written communication in professional and lay domains.
EA 3.3. Creative, innovative and pro-active demeanour.
EA 3.4. Professional use and management of information.
EA 3.5. Orderly management of self, and professional conduct.
EA 3.6. Effective team membership and team leadership
Engineers Australia Stage 1 Competencies are mapped with competency UEENEEG006A in the Assessment matrix

For detailed mapping / information please refer to the C6120 program guide under the accreditation section, http://www.rmit.edu.au/programs/structure/c6120auscy

Classroom learning activities involve the following topics:

Alternating current generators:
Three phase synchronous machines- operation principles and construction encompassing:
need for the generation of a sinusoidal waveform.
principles of operation of a synchronous alternator.
principles of operation of a synchronous motor.
principles of operation of an asynchronous generator (induction generator).
identification of main parts of a synchronous alternator/motor.
methods used to provide the excitation of a synchronous alternator/motor.
block diagram of an alternator voltage regulator.
advantages gained by the parallel operation of alternators.
starting methods of synchronous motors.

Alternators and generators encompassing:
effects on the generated voltage of variations in excitation.
ratings of single and three phase portable/standby alternators.
applications of single and three phase portable/standby alternators.

Transformers:

Transformer construction encompassing:
types of lamination style and core construction used in single-phase, three-phase, double wound, auto transformers and instrument transformers.
identification of different winding styles/types used in transformers.
methods used to insulate low and high voltage transformers.
construction of transformer tanks for distribution transformers.
transformer auxiliary equipment. (Bushings, surge-diverters, tap-changers, hot oil & winding indicators, breather, Buchholz relay and conservator).
types of information stated on transformer nameplates.
application of transformers.
performing basic insulation resistance, continuity and winding identification tests.

Transformer operation:
principles of mutual induction of a transformer.
factors that determines the induced voltage in a transformer winding.
determining the value of a transformers secondary voltage and current given one winding‘s electrical details and turns ratio.
safety features specified in AS/NZS3000 with respect to transformers and isolating transformers.

Transformer losses, efficiency and cooling encompa:
power losses which occur in a transformer.
tests which allow the power losses of a transformer to be determine.
determine transformer losses and efficiency using test results.
relationship between transformer cooling and rating.

Transformer voltage regulation and percent impedance:
voltage regulation as applicable to a transformer.
reasons for voltage variation in the output of a transformer.
determine the voltage regulation of a transformer from voltage and percentage impedance values.
percentage impedance as applied to transformersdetermine the percent impedance by using test results.
determine percent impedance of a transformer by calculation.

Parallel operation of transformers and transformer auxiliary equipment.

Auto-transformers and instrument transformers encompassing:
identification of auto-transformers, voltage transformers and current transformers from their winding diagrams.
determining voltage and current in the windings of an auto-transformer by calculation.
advantages and disadvantages of an auto-transformer.
AS/NZS3000 requirements with respect to transformers.
construction of voltage transformers.
ratings of voltage transformers.
construction of current transformers.
ratings of current transformers.
precautionary measures taken to connect and disconnect instrument transformers.
connection diagrams for instrument transformers.
applications for auto-transformers and instrument transformers.

Single phase motors – split phasemotor:
common types of single phase motor.
principles of operation of a split phase induction motor.
construction and basic characteristics of a split phase induction motor.
applications of split phase induction motors.
connecting, running and reversing a split phase induction motor.

Control circuits, contactors, contacts push buttons, switches

Single phase motors – capacitor and shaded pole types:
identification of single phase induction motors including capacitor start, capacitor
start/capacitor run, permanent split capacitor (PSC) and shaded pole
principles of operation of each motor type listed above.
operating characteristics and typical applications of each motor type listed above.
connection and running each type of motor listed.

reversing the direction of rotation of each of the capacitor type motors.

Single phase motors – universal encompassing:
principles of operation of a series universal motor.
identification and functions of each of the basic parts of a series universal motor.
operating characteristics and typical uses for a series universal motor.
connecting, running and reversing a series universal motor.

Motor protection encompassing:
reasons why motor protection is required.
requirements of the AS/NZS3000 Wiring rules with regards to motor protection.
types of motor overload protection.
operating principles of  thermal and magnetic motor protection devices.
electrical features of motor protection HRC fuses.
effects of under voltage and over voltage on motors and motor circuits.
effects of repetitive starting and/or reversing on motors.
special requirements for motor protection, in high humidity or moist environments,
high temperature areas and corrosive atmospheres.
operating principles of phase failure protection.
selecting suitable protective devices for a given motor and starter combination.

Solve problems in single and three phase low voltage machines involve follwing activites:

A Determining the operatin parameters of existing machines 
B  Developing machines/circuits to comply with a specified function and operating parameters.
C Determining the cause of low efficiency in an existing machine.
D Determining conditions causing an existing circuit to be unsafe.
E Dealing with unplanned events


Teaching Schedule

The proposed teaching schedule for this competency is detailed below:

WeekTopics Delivered Elements/Performance criteria
1Introduction to course, course guide, assessment, topics breakdown, resources, OHS issues,Prepare to solve single and three phase low voltage machines problems. Farady law for genrator action. Three phase power genreation and transmission.1.1 1.2 1.3 .1.5
2AC Generators , Synchronous speed, Prepare to solve single and three phase low voltage machines problems. Paralleling Generators. Turbines. Uninterrupted power supplies. Percentage of voltage regulation.1.1 1.2 1.3 .1.7
3Single and three phase system, effects on the generated voltage of variations in excitation. Star and delta connection. Line and phase voltage relationship. Preparing to solve single and three phase low voltage machines problems.  Parrallling Alternators2.1. 2.2 2.3 2.4 2.5 2.6 2.7
4

Transformer construction.Types of lamination style and core construction used in single-phase, three phase, double wound, auto transformers and instrument transformers. Preparing to solve single and three phase low voltage machines problems.
Types of information stated on transformer nameplates; application of transformers. Efficiency, power, losses.

2.1. 2.2 2.3 2.4 2.5 2.6 2.7

5

 

 Transformer operation. Principles of mutual induction of a transformer; factors that determine the induced voltage in a transformer winding; determining the value of a transformers secondary voltage and current given one winding’s electrical details and turns ratio. Calculating power, current.  Power factor correction.

Practical Exercise: Insulation resistance and earth vresistance measurement. Solving single and three phase low voltage machine problems.

2.1. 2.2 2.3 2.4 2.5 2.6 2.7
6Practical exercise: Transformer percentage impedance, and fault levle calculation. Instrument transformers, current transformers. 5%2.1. 2.2 2.3 2.4 2.5 2.6 2.7
7Paralleling transformers. Practical Exercise. Completing work and documenting AC machines problem solving activities. Test one 35%1.1 1.2 .1. 4 2.1. 2.2 2.4 2.5 2.7
8

Single phase motors. Synchronus speed, Speed toprque characterisitc. Split phase induction motor

Speed Torque characterisitics.  Solving single and three phase low voltage machine problems.  

2.1. 2.2 2.3 2.4 2.5 2.6 2.7
9Motor output power, Motor torque, Motor control circuits, contactors, starters. Nominal and motor starting current. Practical exercise 10%2.1. 2.2 2.3 2.4 2.5 2.6 2.7
10Practical exercise: Starting motors. Capacitor start induction motor. Solving single and three phase low voltage machine problems.2.1. 2.2 2.3  2.6 2.7
11Motor protection. Establishing methods   to solve machine problems from measure and calculated values as they apply to single and three-phase low voltage machines.  Practical exercise 10%2.1. 2.2 2.3 2.4 2.5 2.6 2.7
12Shaded pole induction motor. Universal motor.  Motor protection.2.3 2.4 2.5 2.6 2.7
13Performing basic insulation resistance, continuity and winding identification3.1 3.2 3.3 3.4
14Solve single and three phase low voltage machine problems. Motor equivalent electrical circuit3.1 3.2 3.3 3.4
15Revision on solving single and three phase low voltage machine problems. Documenting problem solving activities3.1 3.2 3.3 3.4
16Assessment on solving single and three phase low voltage machine problems,2.1 2.4 2.6 3.3
17Catchup assessment on solving single and three phase low voltage machine problems.  Test 2  40%3.1.3.2 3.3 3.4
18Feedback on assessment1 ,2, 3

 

In this course, minimum student directed hours are 12 in addition to 80 scheduled teaching hours. 
Student directed hours involve completing activities such as reading online resources, assignments, report for practical work, and individual student-teacher course-related consultation.


Learning Resources

Prescribed Texts

Online notes posted on Blackboard

Jefrey Hampson " Electrical Trade Principles" McGraw Hill
Jim Jenneson "Electrical Principles for Electrical Trades" McGraw Hill
 


References


Other Resources

Students will be able to access information and learning materials through myRMIT and may be provided with additional materials in class. List of relevant reference books, resources in the library and accessible Internet sites will be provided where possible. During the course, you will be directed to websites to enhance your knowledge and understanding of difficult concepts.

- Multimedia Resources, to assist student learning and assessment will be placed on School’s internal network drive (I:\C6120
Recommended Videos and DVDs

Web Based Transducer Tutorial:
http://www.electronics-tutorials.ws/io/io_1.html


Overview of Assessment

The assessment is conducted in both theoretical and practical aspects of the course according to the performance criteria set in the National Training Package. Assessment may incorporate a variety of methods including written/oral activities and demonstration of practical skills to the relevant industry standards. Participants are advised that they are likely to be asked to personally demonstrate their assessment activities to their teacher/assessor. Feedback will be provided throughout the course. To successfully complete this course you will be required to demonstrate competency in each assessment task detailed under Assessment Tasks:

 

Assessment 1: Test 1

Weighting towards final grade (%): 35

 

Assessment 2: Practical Exercises

Weighting towards final grade (%): 25

 

Assessment 3: Test 2

Weighting towards final grade (%): 40

These tasks assesses the following Course Learning Outcomes (CLOs):

 Assessment Mapping Matrix

Element/Performance Criteria CoveredTest 1Practical ExercisesTest 2
1.1xx 
1.2XX 
1.3XX 
1.4XXX
1.5XX 
1.6XXX
1.7 X 
2.2XXX
2.3 XX
2.4XX 
2.5X X
2.6X X
2.7X X
3.1  X
3.2XXX
3.3X X
3.4X X

 

 


Assessment Tasks

Assessment 1: Test 1,  (%) 35,   Week 7  
Assessment 2: Practical Exerecises,  (%) 25 (Ongoing)
Assessment 3: Test 2,  (%) 40 Week 16
 

This course is graded as Competent or Not Yet Competent and subsequently the following course grades are allocated:

80 - 100: CHD - Competent with High Distinction
70 - 79: CDI - Competent with Distinction
60 - 69: CC - Competent with Credit
50 - 59: CAG - Competency Achieved - Graded
0 - 49: NYC - Not Yet Competent
DNS - Did Not Submit for Assessment.


Assessment Matrix

 

Assessment 1: Test 1
Weighting towards final grade (%): 35

Assessment 2: Practical Exercises
Weighting towards final grade (%): 25

Assessment 3: Test 2
Weighting towards final grade (%): 40
 

Assessment vs UEENEEG006A Elements & Performance Criteria

                          UEENEEG006A Elements & Performance Criteria
Assessment1.11.21.31.41.51.61.72.12.22.32.42.52.62.73.13.23.3 3.4
Test 1 X X  X  X X X   X  X X X X  X X X
Practical Exercises X X  X  X  X X X X X X X     X  
Test 2    X  X   X X  X X X X X X X 

 Assesment vs Engineers Australia Stage 1 Competencies

 EA1.1EA1.2EA1.3EA1.4EA1.5EA1.6EA2.1EA2.2EA2.3EA2.4EA3.1EA3.2EA3.3EA3.4EA3.5EA3.6
Test 1xxx x xxx  xx   
Practical Exercisesx xxxxx   xxxxx  
Test 2  x  x    x x     x x
All Assessments   UEENEEG006A212221222 11221 1 1
0 (Blank)Graduate attribute is not assessed
1Graduate attribute is assessed in at least one, but less than one-third, of the Element
2Graduate attribute is assessed in at least one third, but less than two-thirds, of the Element
3Graduate attribute is assessed in more than two-thirds of the Element

Other Information

A license to practice in the workplace is required for work involving direct access to plant and equipment connected to installation wiring at voltages above 50 V a.c. or 120 V d.c.

Credit Transfer and/or Recognition of Prior Learning (RPL):
You may be eligible for credit towards courses in your program if you have already met the learning/competency outcomes through previous learning and/or industry experience. To be eligible for credit towards a course, you must demonstrate that you have already completed learning and/or gained industry experience that is:
• Relevant
• Current
• Satisfies the learning/competency outcomes of the course
Please refer to http://www.rmit.edu.au/students/enrolment/credit to find more information about credit transfer and RPL.
 

Study and learning Support:

Study and Learning Centre (SLC) provides free learning and academic development advice to all RMIT students.
Services offered by SLC to support numeracy and literacy skills of the students are:

assignment writing, thesis writing and study skills advice
maths and science developmental support and advice
English language development

Please Refer http://www.rmit.edu.au/studyandlearningcentre to find more information about Study and learning Support

Disability Liaison Unit:

If you are suffering from long-term medical condition or disability, you should contact Disability Liaison Unit to seek advice and support to
complete their studies.

Please Refer http://www.rmit.edu.au/disability to find more information about services offered by Disability Liaison Unit.

Late submission:

If you require an Extension of Submittable Work (assignments, reports or project work etc.) for 7 calendar days or less (from the original due date) and have valid reasons, you must complete and lodge an Application for Extension of Submittable Work (7 Calendar Days or less) form and lodge it with the Senior Educator/ Program Manager.
The application must be lodged no later than one working day before the official due date. You will be notified within no more than 2 working days of the date of lodgement as to whether the extension has been granted.
If you seek an Extension of Submittable Work for more than 7 calendar days (from the original due date) must lodge an Application for Special Consideration form under the provisions of the Special Consideration Policy, preferably prior to, but no later than 2 working days after the official due date.
Submittable Work (assignments, reports or project work etc.) submitted late without approval of an extension will not be accepted or marked.

Special consideration:

Please Refer http://www.rmit.edu.au/students/specialconsideration to find more information about special consideration.

Plagiarism:

Plagiarism is a form of cheating and it is very serious academic offence that may lead to expulsion from the University.

Please Refer: www.rmit.edu.au/academicintegrity to find more information about plagiarism.

Email Communication:

All email communications will be sent to your RMIT email address and you must regularly check your RMIT emails.


 

Course Overview: Access Course Overview