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Elements and Performance Criteria

1. Plan for the installation, maintenance or fault finding of battery storage systems for grid-connected PV systems
   • Installation design requirements, components and how they interconnect with the different system configurations are identified
   • Hazards associated with battery storage systems for grid-connected PV systems are identified and the risk control measures are listed in safe work method statements/job safety analysis
   • Designer recommendations, relevant industry standards, regulations and manufacturer specifications are identified and applied to planning the system installation, maintenance or fault finding
   • Tools and safety equipment are selected and checked for safe performance of required tasks
   • Maintenance is planned in accordance with system designer's requirements
   • PV system and reported faults are identified and fault finding techniques applied
2. Carry out the installation, maintenance and fault finding of battery storage systems for grid-connected PV systems
   • Job safety analysis is undertaken or safe work method statement is prepared and used to inform work processes in accordance with regulations and workplace procedures
   • Battery storage components are installed in accordance with system design documentation, relevant industry standards, regulations and manufacturer specifications
   • Inverters are installed in accordance with system design documentation, relevant industry standards, regulations and manufacturer specifications
   • System charge controllers are installed in accordance with system design documentation, relevant industry standards, regulations and manufacturer specifications
   • Storage system equipment including, cables, protection and isolation equipment, and signs are installed in accordance with system design documentation, relevant industry standards, regulations and manufacturer specifications
   • System charge controllers and inverters are programmed in accordance with design documentation, relevant industry standards, regulations and manufacturer specifications
   • Required modification to the electrical installation is carried out in accordance with design documentation, regulations and relevant industry standards
   • Maintenance checklists are used to identify items needing servicing or replacement
   • Required maintenance is performed by servicing or replacing items
   • Fault finding techniques are applied to correctly diagnose and rectify system faults
   • Testing, commissioning or reinstatement of the system is conducted in accordance with design documentation, regulations, relevant industry standards and manufacturer specifications
3. Document the installation, maintenance or fault finding of battery storage systems for grid-connected PV systems
   • Testing, commissioning and required compliance documents are completed
   • As installed, electrical system drawings and equipment location plans are produced
   • Client system documentation, from designer, is completed
   • Client is briefed on safe and correct system operation and recommended maintenance
   • Maintenance checklists are finalised correctly and added to client system documentation
   • Fault report/record is completed and added to client system documentation

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions can be found in the Companion Volume Implementation Guide.

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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 and performance criteria on at least one occasion and include: documenting the battery storage system installation for the client: plan and enact scheduled maintenance of a system document/record maintenance activities finding faults in battery storage systems for grid-connected photovoltaic (PV) system: plan and enact identified fault finding procedures for the installed system document/record fault finding activities installing battery storage systems for grid-connected PV systems: install battery storage components install inverter/s install charge controller/s install the balance of system equipment including cables, protection and isolating devices, and signage program inverter/s and charge controller/s modify electrical installation as required maintaining battery storage systems for grid-connected PV systems preparing for the installation of a battery storage system: interpret system design documentation that specifies the quantity and location of all equipment in compliance with relevant industry standards, building codes and regulations testing and commissioning PV system: test operation of each piece of equipment test operation of complete system commission the system brief client on safe and correct system operation and recommended maintenance undertaking site assessment: interpret system design documentation that specifies the quantity and location of all equipment in compliance with relevant industry standards, building codes and regulations.

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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 and performance criteria and include knowledge of: battery storage systems: battery storage systems for grid-connected PV systems including: applications for battery storage including: electrical energy supply during grid outages electrical energy supply direct to loads during periods of high tariffs purpose of each component in battery storage systems for grid-connected PV systems functional block diagrams for typical configurations of battery storage systems for grid-connected PV systems including: multimode inverter/s for connecting to renewable energy, grid, loads and battery storage; these inverter/s provide backup to dedicated loads on grid failure and may: have a built in charge controller for direct connection of a PV array or require a separate charge controller to direct current (DC) couple the PV array and battery two types of inverters comprising, PV grid-connected inverter/s and multimode inverter/s where: both inverter types are connected to the grid and loads via a switching device that may provide backup to dedicated loads during grid failure both inverter types are connected to the grid and only the multimode inverter/s may provide backup to dedicated loads on grid failure only the multimode inverter/s are connected to the grid. The grid-connected inverter/s are alternate current (AC) coupled to the multimode inverter/s and both types can provide backup to dedicated loads on grid failure charge controllers including: types and applications of charge controllers for different system configuration specifications of a charge controller, including: output rating DC voltage operating window and/or rating DC current rating in and out efficiency grid-connected batteries: battery terms including: nominal voltage cell primary and secondary cells battery charge and discharge rate amp hour capacity watt hour capacity state of charge (SOC) depth of discharge (DOD) battery types including: major features of commercially available types of batteries suitable for battery storage systems for grid-connected PV systems factors affecting the life of commercially available types of batteries including the estimation of battery life charging regimes suitable for commercially available types of batteries battery safety including: hazards associated with handling, installing or maintaining commercially available types of batteries and risk control measures procedures for safe disposal of commercially available types of batteries common processes leading to battery failure in commercially available batteries including sulphation and stratification in lead acid batteries grid-connected inverters: inverters including: differences between multimode and grid connect inverters output rating of a multimode inverter/s in relation to: required maximum demand capacity for battery charging program parameters for a multimode inverter, for the correct operation of the system grid-connected storage systems fault finding: fault finding procedures including: fault finding procedures for individual equipment fault finding procedures for interconnected systems grid-connected storage systems installations: installation requirements including: installing battery storage devices in accordance with system design documentation, relevant industry standards, regulations and manufacturer requirements installing inverters suitable for connecting to battery storage in accordance with system design documentation, relevant industry standards, regulations and manufacturer requirements installing charge controllers in accordance with system design documentation, relevant industry standards, regulations and manufacturer requirements installing all balance of system equipment in accordance with system design documentation, relevant industry standards, regulations and manufacturer requirements electrical drawings including: electrical systems circuit diagrams of typical battery storage systems for grid-connected PV systems including: AC loads being supplied during periods when grid is unavailable all major components protection devices earthing isolation switching metering equipment location plan/s to show the locations of equipment, fittings and cabling grid-connected storage systems maintenance procedures including: maintenance requirements for individual equipment maintenance requirements for interconnected systems grid-connected storage systems testing and commissioning procedures including: safe testing of equipment safe testing of system operation commissioning of battery storage system.

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