SAQA All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Demonstrate knowledge of power system fundamentals 
SAQA US ID UNIT STANDARD TITLE
242764  Demonstrate knowledge of power system fundamentals 
ORIGINATOR
SGB Power Plant Operations 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Engineering and Related Design 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 5  Level TBA: Pre-2009 was L5  4 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 		 2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
A person credited with this unit standard will know and understand the concepts and principles associated with transmission system operation. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
It is assumed that learners are already competent in:
  • Communication and Mathematical Literacy at NQF Level 4.
  • Electrical and Mechanical understanding at NQF Level 4. 
    		•

    UNIT STANDARD RANGE 
    N/A 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Describe power system fundamentals. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Control of system operation concepts is described as applicable to local applications. 

    ASSESSMENT CRITERION 2 
    The establishment of Independent System Operators (IS0s), grid operators or other similar entities is described as applicable to local applications. 

    ASSESSMENT CRITERION 3 
    Tasks of the system operations group controlling the transmission system is explained as applicable to local environment. 

    ASSESSMENT CRITERION 4 
    Frequency control of the power system through matching of power production and consumer demand plus losses are described according to requirements. 

    ASSESSMENT CRITERION 5 
    Load impedance and its effect on current flow through transmission lines are described according to design specifications. 

    ASSESSMENT CRITERION 6 
    The effect of conductor resistance in a transmission line is described according to requirements. 
    ASSESSMENT CRITERION RANGE 
    Voltage drop and energy loss due to heat dissipation.
     

    ASSESSMENT CRITERION 7 
    The effect of line voltage on system energy losses is described according to requirements. 

    ASSESSMENT CRITERION 8 
    Differences between power and energy are described as applicable to watts and watt-hours. 

    SPECIFIC OUTCOME 2 
    Explain effects of resistance, capacitance, and inductance on an electrical power system. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Typical power generator prime movers are explained according to application. 
    ASSESSMENT CRITERION RANGE 
    Steam, hydro, wind, tidal, gas.
     

    ASSESSMENT CRITERION 2 
    Fundamentals of electric power generation are explained according to requirements. 

    ASSESSMENT CRITERION 3 
    Sine wave and Root Mean Square (RMS) values are explained within applicable context. 

    ASSESSMENT CRITERION 4 
    Factors which determine frequency of generation are explained according to requirements. 

    ASSESSMENT CRITERION 5 
    Effects of pure resistance in an Alternating Current (AC) circuit as shown by sine waves and vector diagrams are explained according to requirements. 

    ASSESSMENT CRITERION 6 
    Effect of pure inductive reactance and capacitive reactance in an Alternating Current (AC) circuit is explained according to requirements. 

    ASSESSMENT CRITERION 7 
    Power generated in resistive, inductive, and capacitive circuits are explained according to requirements. 

    ASSESSMENT CRITERION 8 
    The flow of reactive power, positive and/or negative VArs are explained according to requirements. 

    SPECIFIC OUTCOME 3 
    Describe Power factor and power factor correction on a power system. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The power triangle and power factor are described as per electrical theories. 

    ASSESSMENT CRITERION 2 
    Combined circuits are described according to requirements. 
    ASSESSMENT CRITERION RANGE 
    R, XL, and Y.
     

    ASSESSMENT CRITERION 3 
    The impedance triangle and voltage triangle is explained as per electrical theories. 

    ASSESSMENT CRITERION 4 
    Power factor correction is described as per electrical theories. 

    SPECIFIC OUTCOME 4 
    Explain effects of impedance and voltage drop on the power system. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The effect of transmission line inductance on voltage drop is described according to requirements. 

    ASSESSMENT CRITERION 2 
    The development of a power angle across a transmission line due to line inductance is explained accortding to requirements. 

    SPECIFIC OUTCOME 5 
    Describe three phase power systems. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Three-phase power generation is described as per electrical theories. 

    ASSESSMENT CRITERION 2 
    The application of a common neutral conductor is explained according requirements. 

    ASSESSMENT CRITERION 3 
    A balanced three-phase load with no neutral conductor is described according to requirements. 

    ASSESSMENT CRITERION 4 
    Voltage and current characteristics of the star and delta connections are described as per electrical theories. 

    ASSESSMENT CRITERION 5 
    The calculation of three-phase power is performed as per electrical theories. 

    ASSESSMENT CRITERION 6 
    Current and voltage relationships between primary and secondary of a delta/ star connected transformer are described as per electrical theories. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against this unit standard must be registered as an assessor with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this unit standard must be accredited as a provider with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant Education, Training, Quality, Assurance (ETQA) Body, or by an ETQA that has a Memorandum of Understanding with the relevant ETQA, according to the ETQA's policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments at exit points of the unit standard, unless ETQA policies specify otherwise. Moderation should also encompass achievement of the competence described both in individual Unit Standards as well as the integrated competence described in the Qualification.
  • Anyone wishing to be assessed against this unit standard may apply to be assessed by any assessment agency, assessor or provider institution that is accredited by the relevant ETQA. 
    		•

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Knowledge of power system fundamentals. 

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identifying & solving problems in which responses display that responsible decisions using critical and creative thinking have been made. 

    UNIT STANDARD CCFO COLLECTING 
    Collecting, analysing, organizing and critically evaluating information. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicating effectively using visual, mathematical and/or language skills in the modes of oral and/or written persuasion. 

    UNIT STANDARD CCFO SCIENCE 
    Using science and technology effectively and critically, showing responsibility towards the environment and health of others. 

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrating an understanding of the world as a set of related systems by recognizing that problem-solving contexts do not exist in isolation. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    N/A 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Fundamental  57693   National Diploma: Electrical Network Power Dispatch Controlling  Level 5  NQF Level 05  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  EWSETA 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 


    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.