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: 

Isolate a three-phase transformer and carry out tap changes 
SAQA US ID UNIT STANDARD TITLE
258930  Isolate a three-phase transformer and carry out tap changes 
ORIGINATOR
SGB Electrical Engineering & Construction 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Electrical Infrastructure Construction 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 3  NQF Level 03 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
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 
This unit standard will be useful to people who are responsible to change tap settings on a three phase transformer.

People credited with this unit standard are able to:
  • Explain the requirements pertaining to tap changing.
  • Prepare to change tap settings.
  • Change tap settings.
  • Restore power and perform reporting and housekeeping duties. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    The credit calculation is based on the assumption that learners are already competent in terms of the following outcomes or areas of learning when starting to learn towards this unit standard:

    The ability to:
  • Use hand held electrical testing instruments.
  • Read and interpret electrical diagrams.
  • Use relevant hand tools. 

  • UNIT STANDARD RANGE 
    The following scope and context applies to the whole unit standard:
  • Changing of tap settings on transformers up to and including 11kv.
  • Excluding automatic tap changing systems.

    Specific range statements are provided in the body of the unit standard where they apply to particular specific outcomes or assessment criteria. 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Explain the requirements pertaining to tap changing. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The purpose of changing the tap setting of a transformer is explained with reference to specified requirements. 

    ASSESSMENT CRITERION 2 
    The method of tap changing is explained in accordance with best practice and specified requirements. electrical test instruments is explained with reference to type of instrument and specified requirements. 

    ASSESSMENT CRITERION 3 
    The requirements pertaining to changing a transformer tap setting are explained with reference to safety and loss of production. 

    SPECIFIC OUTCOME 2 
    Prepare to change tap settings. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Personal protective equipment is examined and used in a manner that protects the individual in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    Tools, material and equipment are selected and transported in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    Permission to enter the workplace where applicable is obtained in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    Affected parties are notified of scheduled power disruption in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    The workplace is examined for hazardous and sub-standard conditions. Critical hazards and sub-standard conditions encountered in a particular context are addressed in a manner consistent with documented best practice. 

    ASSESSMENT CRITERION 6 
    The work to be carried out is entered into a logbook in accordance with specified requirements. 

    ASSESSMENT CRITERION 7 
    The consequences of not preparing to change transformer tap settings in line with specific requirements are explained with reference to personal and team safety, impact on the environment, production costs and lost time. 

    SPECIFIC OUTCOME 3 
    Change tap settings. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The power is switched off and lock out procedures is adhered to in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The changing of the transformer tap setting is in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    Hazards and risks directly related to changing a transformer tap setting are identified and addressed in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    Personal protective equipment is used in a manner that protects the individual in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    Tools, material and equipment are used in accordance with specified requirements. 

    ASSESSMENT CRITERION 6 
    Interpersonal interaction is positive, consistent with specified requirements, promotes effective teamwork, and avoids dysfunctional conflict. 

    ASSESSMENT CRITERION 7 
    The consequences of not changing the tap setting in line with specified requirements are explained with reference to personal and team safety, impact on the environment, production costs and lost time. 

    SPECIFIC OUTCOME 4 
    Restore power, and perform reporting and housekeeping duties. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The power is switched on in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    Logbook entries are carried out in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    The workplace is cleaned to comply with specified house keeping practices. 

    ASSESSMENT CRITERION 4 
    Tools, material and equipment are cleaned, inspected and stored in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    The feedback report complies with specified requirements. 

    ASSESSMENT CRITERION 6 
    The consequences of not restoring power and not performing reporting and housekeeping duties in line with specified requirements are explained with reference to personal and team safety, impact on the environment, production costs and lost time. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard must be accredited as a provider with the relevant ETQA and SAQA.
  • Moderation of assessment will be overseen by the relevant ETQA according to the moderation guidelines in the relevant qualification and the agreed ETQA procedures. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Essential embedded knowledge will be assessed through assessment of the specific outcomes in terms of the stipulated assessment criteria. Candidates are unlikely to achieve all the specific outcomes, to the standards described in the assessment criteria, without knowledge of the listed embedded knowledge. This means that for the most part, the possession or lack of the knowledge can be directly inferred from the quality of the candidate's performance. Where direct assessment of knowledge is required, assessment criteria have been included in the body of the unit standard.

    The following embedded knowledge is addressed in an integrated way in the unit standard:
  • Report writing.
  • Health and safety knowledge.
  • Legal and site-specific requirements. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems and make decisions using critical and creative thinking.

    Note: The ability of the candidate to identify sub-standard and hazardous conditions, assess and take appropriate action. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as members of a team, group, organisation or community.

    Note: The ability and willingness of the candidate to accept and interpret work instructions correctly. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage themselves and their activities responsibly and effectively.

    Note: The ability of the candidate to indicate what methods, tools and personal protective equipment is required and communicate to fellow workers his/her intentions and assistance required. 

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information.

    Note: The ability of the candidate to reconcile the information from visual and physical examinations and constantly evaluate the changing situation. 

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

    Note: The appropriate communication with the relevant personnel with regard to the reporting of hazards and sub-standard conditions will indicate his/her proficiency in effective communication. 

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

    Note: The use of science and technology is not relevant for this unit standard. 

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

    Note: The ability of the candidate to identify and refer anomalous behaviour to a specialist confirms understanding that a specific observation, inference, action or decision can have a devastating effect. 

    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 
    Specified Requirements:

    Specified requirements include legal and site-specific requirements and are contained in one or more of the following documents:

    Legal:
  • Relevant Acts: e.g. Mine Health & Safety Act, 1996 (Act no 29/1996), and Minerals Act, Regulations, 1991 (Act no 50/1991).
  • Mandatory Codes of Practice.
  • SANS and other relevant Standards.
  • Chief Inspector of Mines' Directives and instructions.

    Site Specific:
  • Hazard Identification and Risk Assessments (HIRA).
  • Occupational Health and Safety Risk Management Programme.
  • Managerial Instructions.
  • Mine Standard Procedures.
  • List of Recorded OH&S Risks.
  • Working Guides.
  • Equipment and Materials Specifications.

    Notes to Assessors:

    Assessors should keep the following principles in mind when designing and conducting assessments against this unit standard:
  • Focus the assessment activities on gathering evidence in terms of the main outcome expressed in the title to ensure assessment is integrated rather than fragmented. Remember we want to declare the person competent in terms of the title. Where assessment at title level is unmanageable, then focus assessment around each specific outcome, or groups of specific outcomes.
  • Make sure evidence is gathered across the entire range, wherever it applies. Assessment activities should be as close to the real performance as possible, and where simulations or role-plays are used, there should be supporting evidence to show the candidate is able to perform in the real situation.
  • Do not focus the assessment activities on each assessment criterion. Rather make sure the assessment activities focus on outcomes and are sufficient to enable evidence to be gathered around all the assessment criteria.
  • The assessment criteria provide the specifications against which assessment judgements should be made. In most cases, knowledge can be inferred from the quality of the performances, but in other cases, knowledge and understanding will have to be tested through questioning techniques. Where this is required, there will be assessment criteria to specify the standard required.
  • The task of the assessor is to gather sufficient evidence, of the prescribed type and quality, as specified in this unit standard, that the candidate can achieve the outcomes again and again and again. This means assessors will have to judge how many repeat performances are required before they believe the performance is reproducible.
  • All assessments should be conducted in line with the following well documented principles of assessment: appropriateness, fairness, manageability, integration into work or learning, validity, direct, authentic, sufficient, systematic, open and consistent, systematic, open and consistent. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  72051   National Certificate: Electrical Engineering  Level 3  NQF Level 03  Passed the End Date -
    Status was "Registered" 
    2013-11-07  As per Learning Programmes recorded against this Qual 


    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.
     
    1. CLEAN HEAT ENERGY SAVING SOLUTIONS (PTY) LTD 
    2. MSC ARTISAN ACADEMY 



    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.