Unit of competency: UEENEEE125A - Provide engineering solutions for problems in complex multiple path circuits

 

 

Retrieved from: https://training.gov.au/Training/Details/UEENEEE125A 12/02/2020

 

Unit Descriptor

Unit Descriptor 

1) Scope: 

 

1.1) Descriptor 

 

This unit covers determining correct operation of complex multiple path circuits and providing engineering solutions as they apply to various branches of electrotechnology work functions. It encompasses working safely, problem solving procedures, including using electrical measuring devices, applying appropriate circuit theorems and providing solutions derived from measurements and calculations and justification for such solutions.

Application of the Unit

Application of the Unit 

2) 

 

This unit is intended to augment formally acquired competencies. It is suitable for employment-based programs under an approved contract of training.

Licensing/Regulatory Information

License to practice 

3)  

 

The skills and knowledge described in this unit require a license to practice in the workplace where plant and equipment operate at voltage above 50 V a.c. or 120 V d.c. However other conditions may apply in some jurisdictions subject to regulations related to electrical work. Practice in the workplace and during training is also subject to regulations directly related to occupational health and safety and where applicable contracts of training such as apprenticeships.

Pre-Requisites

Prerequisite Unit(s) 

4)  

Competencies 

4.1) Competencies 

 

Granting competency in this unit shall be made only after competency in the following unit(s) has/have been confirmed.

UEENEEE126A           Provide solutions to basic engineering                     computational problems.

 

 

 

 

 

Employability Skills Information

Employability Skills 

5)  

 

This unit contains Employability Skills

The required outcomes described in this unit of competency contain applicable facets of Employability Skills. The Employability Skills Summary of the qualification in which this unit of competency is packaged will assist in identifying Employability Skill requirements.

 

Elements and Performance Criteria Pre-Content

6) Elements describe the essential outcomes      of a competency standard unit

Performance Criteria describe the required performance needed to demonstrate achievement of the Element. Assessment of performance is to be consistent with the Evidence Guide.

 

Elements and Performance Criteria

ELEMENT 

PERFORMANCE CRITERIA 

1

Prepare to solve problems in complex multiple path circuits.

1.1

OHS procedures for a given work area are identified, obtained and understood.

 

1.2

OHS risk control work preparation measures and procedures are followed.

   

1.3

The nature of the circuit(s) problem is obtained from documentation or from work supervisor to establish the scope of work to be undertaken.

   

1.4

Advice is sought from the work supervisor to ensure the work is coordinated effectively with others.

   

1.5

Sources of materials that may be required for the work are identified and accessed in accordance with established procedures.

   

1.6

Tools, equipment and testing devices needed to carry out the work are obtained and checked for correct operation and safety.

2

Solve problems in complex multiple path circuits

2.1

OHS risk control work measures and procedures are followed.

 

2.2

The need to test or measure live is determined in strict accordance with OHS requirements and when necessary conducted within established safety procedures.

   

2.3

Circuits are checked as being isolated where necessary in strict accordance OHS requirements and procedures.

   

2.4

Established methods are used to solve circuit problems from measure and calculated values as they apply to complex multiple path circuit.

   

2.5

Unexpected situations are dealt with safely and with the approval of an authorised person.

   

2.6

Problems are solved without damage to apparatus, circuits, the surrounding environment or services and using sustainable energy practices.

3

Complete work and document problem solving activities.

3.1

OHS work completion risk control measures and procedures are followed.

   

3.2

Work site is cleaned and made safe in accordance with established procedures.

   

3.3

Justification for solutions used to solve circuit problems is documented.

   

3.4

Work completion is documented and appropriate person(s) notified in accordance with established procedures.

 

 

Required Skills and Knowledge

REQUIRED SKILLS AND KNOWLEDGE 

7)  This describes the essential skills and knowledge and their level, required for this unit.

 

Evidence shall show that knowledge has been acquired of safe working practices and provide engineering solutions for solving problems in complex multiple path circuits.

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies.

KS01-EE125A Circuit analysis 

Evidence shall show an understanding of circuit analysis to an extent indicated by the following aspects:

T1 Voltage/Current Sources and Kirchhoff’s Law for d.c. Linear Circuits encompassing:

·         calculating the effect of the internal resistance on terminal voltage and current delivered for practical voltage sources and current sources

·         calculating current and voltage in any d.c. network of up to two loops and three sources.

·         Kirchhoff’s Law using a circuit simulation program.

·         function and operation of an electronics circuit simulation program.

·         using electronics circuit simulation program.

T2 Superposition Principles for d.c. Linear Circuits encompassing:

·         d.c. networks (two loops, three sources)

·         using simulation programs

·         calculating current and voltage in any d.c. network of up to two loops and three sources.

·         Superposition theorem using a circuit simulation program.

T3 Mesh and Nodal Analysis for d.c. Linear Circuits encompassing:

·         writing mesh equations for d.c. networks containing up to three loops.

·         writing Nodal equations for d.c. networks containing up to three nodes.

·         using mesh analysis to find currents in d.c. networks of up to two loops.

·         using nodal analysis to find node voltage and branch currents in d.c. networks of up to two nodes

·         using a circuit simulation program to confirm the results of Mesh analysis or Nodal analysis of d.c. networks.

T4 Thévenin’s principles for d.c. Linear Circuits encompassing:

·         calculating the effect of the internal resistance on terminal voltage and current delivered for practical voltage sources and current sources.

·         calculating the Thévenin equivalent voltage and resistance for d.c. networks and determining the load current, voltage and power.

·         converting the Thévenin equivalent circuit to a Norton equivalent circuit and vice versa.

·         verifying the equivalence of Thévenin equivalent circuits by measurement.

T5 Norton’s principles for d.c. linear circuits encompassing:

·         calculating the effect of the internal resistance on terminal voltage and current delivered for practical voltage sources and current sources.

·         calculating the Norton equivalent current and resistance for d.c. networks and determining the load current, voltage and power.

·         converting the Thévenin equivalent circuit to a Norton equivalent circuit and vice versa.

·         verifying the equivalence of Norton equivalent circuits by measurement.

T6 Phasors encompassing:

·         time domain and frequency domain

·         frequency, angular frequency and units of measurement

·         defining rms and convert between time domain and rms phasor values for a sine wave.

·         converting between angular frequency and frequency.

·         using a calculator to convert between polar and rectangular forms of phasor.

·         representing a.c. voltages on a phasor diagram.

T7 Complex Impedance encompassing:

·         defining impedance, resistance and reactance.

·         defining admittance, conductance and susceptance.

·         converting between conductance to resistance.

·         converting between susceptance and reactance.

·         converting between impedance and admittance.

·         sketching impedance and admittance diagrams.

·         calculating two-component series equivalent circuits and two-component parallel equivalent circuits and convert between these forms.

T8 Series and parallel a.c. linear circuits encompassing:

·         Kirchhoff’s Laws

·         series equivalent impedance

·         parallel equivalent impedance

·         voltage divider and current divider rules

·         calculating and measuring voltage and currents in a series a.c .circuit and draw the phasor diagram.

·         calculating and measuring currents in a parallel a.c. circuit and draw the phasor diagram.

·         calculating and measuring voltage and currents in a series/parallel a.c. circuit and draw the phasor diagram.

T9 Superposition principles and Kirchoff’s Laws applied to a.c. linear circuits encompassing:

·         calculating current and voltage in any a.c. network of up to two loops and two sources.

·         using circuit simulation programs to demonstrate the superposition theorem.

·         function and operation of an electronics circuit simulation program.

·         entering given circuit specifications into an electronic circuit program.

·         setting the circuit simulation program operation parameters including input and output values, ranges and graduation.

·         producing hardcopies of the circuit and analyse results.

T10 Mesh and Nodal analysis for a.c. linear circuits encompassing:

·         Mesh analysis

·         Node voltages and nodal analysis

·         matrix representation

·         method of determinants

·         writing mesh equations for a.c. networks containing up to three loops.

·         writing nodal equations for a.c. networks containing up to three nodes.

·         using mesh analysis to find currents in a.c. networks of up to two loops.

·         using nodal analysis to find node voltage and branch currents in a.c. networks of up to two nodes.

·         using a circuit simulation program to confirm the results of mesh analysis or nodal analysis of a.c. networks.

T11 Thévenin and Norton theorems applied to a.c. linear circuits encompassing:

·         calculating the effect of the internal resistance on terminal voltage and current delivered for practical voltage sources and current sources.

·         calculating the Thévenin equivalent voltage and impedance for a.c. networks and determining the load current, voltage and power.

·         calculating the Norton equivalent current and impedance for a.c. networks and determining the load current, voltage and power.

·         converting the Thévenin equivalent circuit to a Norton equivalent circuit and vice versa.

·         verifying the equivalence of Thévenin and Norton equivalent circuits by measurement.

T12 Star-delta conversions encompassing:

·         Star connections

·         Star-delta transformation formula equations

·         selection of appropriate conversion

·         calculating the delta connected equivalent of a star connected balanced a.c. or d.c. load and vice versa.

·         converting a complex non-series/parallel network to a series/parallel network by means of star-delta or delta-star conversions.

·         verifying star-delta and delta-star network conversions by measurements.

T13 Complex a.c. power and maximum power transfer theorem encompassing:

·         true power, reactive power and apparent power

·         maximum power transfer

·         calculating real, reactive and apparent power for series/parallel a.c. circuits and state the appropriate units of measurement.

·         calculating the power factor of a.c. series/parallel circuits.

·         drawing power triangle for a given circuit.

·         calculating the load value which would consume maximum power and calculate this power for d.c. networks.

·         calculating the load value which would consume maximum power in an a.c. network when the load is a pure resistance and calculate the power.

·         calculating the load value which would consume maximum power in an a.c. network when the load is an impedance of variable resistance and reactance and calculate the power.

·         verifying load selection by measurement.

T14 Transients encompassing:

·         transients in R-C and R-L circuits

·         growth and decay

·         calculating voltage and currents in R-C series circuits using exponential equations.

·         calculating voltage and currents in R-L series circuits using exponential equations

 

Software/Hardware Used

Software
Hardware