UEEEL0047 - Identify, shut down and restart systems with alternate supplies
Nominal hours
Location
Prerequisites
UEECD0019 - Fabricate, assemble and dismantle utilities industry components
UEECD0020 - Fix and secure electrotechnology equipment
UEECD0051 - Use drawings, diagrams, schedules, standards, codes and specifications
UEEEL0003 - Arrange circuits, control and protection for electrical installations
UEEEL0019 - Solve problems in direct current (d.c.) machines
UEEEL0020 - Solve problems in low voltage a.c. circuits
UEEEL0021 - Solve problems in magnetic and electromagnetic devices
UEEEL0023 - Terminate cables, cords and accessories for low voltage circuits
UEECD0044 - Solve problems in multiple path circuits
UEECD0046 - Solve problems in single path circuits
(Or equivalent to be determined by unit coordinator)
Co-requisites
(Corequisite units must be studied concurrently with this unit)
Overview
This unit involves the skills and knowledge required to identify, shut down and restart systems with alternate supplies.
It includes identifying the system configuration, working safely with electricity generation systems and inverters, identifying hazards and controlling the associated risks, isolation and testing for de-energisation, reinstating the system after isolation, and completing relevant documentation.
The skills and knowledge described in this unit require a licence or permit to practice in the workplace where work is carried out on electrical installations which are designed to operate at voltages greater than 50 volt (V) alternating current (a.c.) or 120 V direct current (d.c.).
Assessment
For Melbourne campuses
Assessment tasks will be designed to reinforce & extend knowledge and skill competence within set & controlled parameters in accordance with each unit’s learning outcomes & performance criteria requirements, incl the setting of work based practical application tasks designed to provide evidence of competence outcomes, within periodic and scheduled timelines.
Students will be expected to demonstrate the following required skills:
*applying work health and safety (WHS)/occupational health and safety (OHS) workplace procedures
*identifying and assessing hazards and risks, including hazards based on supply system labelling, and implementing control measures
*obtaining and checking required tools, equipment and testing devices
*reading and interpreting electrical documentation, labelling and drawings
*identifying alternative supply arrangements and configurations
*applying safe shutdown procedures
*isolating energy sources in accordance with workplace procedures and regulatory requirements, including:
*applying safe isolation practices
*identifying correct isolation device
*identifying and checking operation of control device/s
*identifying live conductors
*identifying known source of electromotive force (EMF) for testing purposes
*correctly using a voltage tester
*isolating multiple supplies, where required
*isolating under no loads
*ensuring all energy sources are isolated
*de-energising charging sources, including:
*solar charge controllers
*battery chargers
*proving systems are isolated
*tagging-out all supplies
*ensuring all installation work complies with relevant industry standards and legislation to which the selection, installation and control equipment of each type of system must comply
*checking battery storage system integrity is in accordance with industry standards and regulatory and manufacturer requirements, including ventilation, correct isolation devices and installation position
*safely re-instating generation system to operational mode according to site documentation and manufacturer instructions
*completing required documentation and forwarding to relevant parties.
Students will also be expected to demonstrate the following knowledge:
*working safely with alternate supplies, including identifying hazards and controlling risks in compliance with regulatory and enterprise requirements
*main types, arrangements and configurations of alternative supplies (generating system), including renewable and non-renewable generating systems
*fundamental requirements, including:
*connection methods of alternative supplies
*local supply authority requirements
*characteristics and operation of uninterruptable power supplies (UPS)
*direct current (d.c.) polarity requirements, including switching, correct rating of d.c. switches and protection devices
*importance of replacing components like-for-like
*inverter principles, including operation and interaction with the installation, anti-islanding and islanding requirements and testing requirements
*identification and labelling requirements and their purpose
*arrangement for connecting an alternative supply to an installation, including automatic and manual changeover switches, multiple main switches and switchboard wiring
*earthing arrangements, including equipotential bonding, and earthing methods and requirements for stand-alone systems and generators
*safe isolation of the generator/energy source, including:
*anti-islanding
*auto changeover/auto start
*backup – external power supply (EPS)/UPS mode or backup mode
*earth fault alarm
*voltage rise
*voltage parameters AS/NZS 4777 Grid connection of energy systems via inverters
*no loads
*deenergising charging sources such as solar charge controllers, and battery chargers
*AS/NZ 4836 Safe working on or near low-voltage electrical installations and equipment
*labelling and identification of alternate supply systems
*battery storage systems, including regulatory and manufacturer requirements
*relevant industry standards to which the selection, installation and control equipment of each type of system must comply, including:
*AS/NZS 3000 Electrical installations (known as the Australian/New Zealand Wiring Rules) relating to the requirements for electricity generation systems installation and electricity converters
*AS/NZS 4777(series) Grid connection of energy systems via inverters
*AS/NZS 5033 Installation and safety requirements for photovoltaic (PV) arrays
*AS/NZS 3010 Electrical installations - generating sets
*AS/NZS 4509 (series) Stand-alone power systems
*AS 3011 Electrical installations - Secondary batteries installed in buildings
*AS/NZS 5139 Electrical installations - Safety of battery systems for use with power conversion equipment
*site and regulatory documentation requirements.
Required reading
The qualified trainer and assessor will provide teaching and learning materials as required in the form of workbooks produced by Victoria University and/or via the Victoria University e-learning system.
As part of a course
This unit is studied as part of the following course(s):