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Elements and Performance Criteria

1. Prepare to install and replace LV CT metering
   • WHS/OHS requirements and workplace procedures for a given work area are identified and applied
2. WHS/OHS hazards are identified, risks are assessed, and control measures are implemented for work preparation
3. WHS/OHS hazards not previously identified are noted, risks assessed and risk control measures implemented
4. Switchboard on which the meter/s and CTs are to be installed, inspected and tested are evaluated for compliance with safety and relevant industry standards
5. Further work instructions for safety and/or functionality defects of the switchboard are sought from appropriate person/s in accordance with workplace procedures
6. Installation of the meter, sequence and rectification work is prepared in consultation with relevant person/s
7. Material needed for the work is obtained in accordance with workplace procedures and checked against work requirements
8. Tools, equipment and testing devices needed for work are obtained in accordance with workplace procedures and checked for correct operation and safety
9. Install and replace CT metering
   • WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
10. Need to test and measure live electrical work is determined in accordance with WHS/OHS requirements and workplace procedures
11. Existing metering is checked and isolated in accordance with WHS/OHS requirements and workplace procedures
12. Approved rectification work is carried out to comply with relevant industry standards and workplace procedures
13. Meters and CTs are installed and replaced to comply with relevant industry standards and work specifications
14. Metering power, functional requirements and communication connections, as required, are in accordance with manufacturer specifications and relevant industry standards
15. Meter operating parameters and functional requirements are in accordance with manufacturer specifications and relevant industry standards
16. Unplanned situations are responded to in accordance with workplace procedures and with the approval of an authorised person in a manner that minimises risk to personnel and equipment
17. Quality checks of the installed apparatus are undertaken in accordance with workplace procedures
18. Metering and CT installation is carried out efficiently without unnecessary waste of materials, services, damage to apparatus, circuits or environment using sustainable energy principles
19. Complete and report metering installation activities
    • WHS/OHS work completion risk control measures and procedures are followed and supply is reinstated to the installation is accordance with workplace procedures
20. Worksite is cleaned and made safe in accordance with workplace procedures
21. Quality checks of the installed metering and CTs is in accordance with relevant industry standards
22. Metering and CT work is documented and appropriate person/s notified in accordance with workplace procedures

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.
Installing and replacing LV CT must include at least two of the following different installations:	LV CT installation using single phase meters LV CT installation using a polyphase meter metering installation where compliance rectification work is required

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Performance Evidence

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:

inspecting and evaluating safety and functionality compliance of the switchboard accurately following established procedures to obtain approval to rectify non-compliance aspects of the switchboard carrying out preparation work effectively rectifying compliance defects placing and securing metering correctly making power and communications connections in accordance with manufacturer specifications and functional and regulatory requirements setting meter parameters in accordance with manufacture's specifications and functional and regulatory requirements reinstating supply to the installation safely documenting current transformer(CT) metering and rectification work and notifying appropriate persons in accordance with established procedures dealing with unplanned events applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including using risk control measures applying sustainable energy practices completing activities following quality, workplace procedures and instructions preparing, installing and replacing CT energy metering selecting metering and CT components using tools, equipment, personal protective equipment (PPE) and testing devices reporting work activities.

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Knowledge Evidence

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:

low voltage (LV) CT metering, including: CTs encompassing: uses and functions AS 60044.1-2007 Instrument transformers - Current transformers, requirements characteristics and saturation differences between metering and protection CTs standard ratios and outputs accurate range of loading thermal current limit burden and connecting cable length short circuiting secondary as a safety issue accuracy class revenue meter types used with CTs: CT installations encompassing: uses in the regulated market and relevant regulations types and mounting methods switchboard layouts (various distributors) minimum spacing of CTs connections to single and polyphase revenue meters consequence of polarity reversal in one phase of a polyphase meter problem-solving techniques relevant industry standards relevant quality workplace procedures relevant tools, equipment and testing devices relevant job safety assessments or risk mitigation processes relevant manufacturer specifications and operating instructions relevant sustainable energy practices relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace policies, procedures and instructions.

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