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Grid Tied PV System with Battery Backup – User Manual
Version UM1142-PV-BT-v1.0 © solarcity 2019
5.3.2 Battery enclosure
Your solarZero battery enclosure contains the hybrid inverter, the battery module and switchgear to interconnect the
electrical components. It also hosts the communication device of the system.
5.3.2.1 Hybrid inverter
The solar panels generate direct current (DC) electricity. The hybrid inverter uses
that power to charge the battery or converts it to 230V alternating current (AC)
electricity for use in your home. It also converts the energy stored in the battery to
AC for use in your home and allows the battery to be charged from the grid.
Australian and New Zealand standards require the inverter to automatically shut
down in the event of a grid power outage, or when the grid operates outside of
normal parameters, in order to protect utility workers from harm when they believe
the grid to be de-energised. When this happens, the system automatically
reconnects in backup mode. This allows some circuits in your home to operate
during a power cut, and allows solar generation to continue charging the battery,
or powering your home. Once the grid returns to normal operating conditions, the
inverter automatically returns to grid operation mode, and all circuits in your home
will be powered again.
Figure 3: Goodwe hybrid inverter
5.3.2.2 Battery
The Link Data battery unit contains the battery where energy is stored in Li-ion
cells. The battery is controlled by the hybrid inverter and has a nominal capacity of
5.1 kWh.
Figure 4: Link Data battery
5.3.3 Framing
The solar panels are fixed to your roof using top of the range framing components manufactured by Clenergy. Clenergy is the market
leader in innovative, high quality renewable energy mounting systems. The Clenergy mounting system uses clear anodized aluminium
that is designed to withstand harsh wind and marine conditions. The mounting system is compliant with AS/NZ 1170.2:2012 and the
New Zealand Building Code.
5.4 Backup mode
The inverter’s backup mode supplies electricity to up to four circuits in your home when there is a grid power outage.
Examples of circuits that are usually connected to the backup supply include:
- Power sockets that supply fridges
- Power sockets that supply TVs and associated equipment
- Power sockets that supply internet connectivity devices
- Light circuits
- The router for monitoring and controlling your solarZero system
Examples of large loads that cannot be connected to the backup supply include:
- Electric ovens
- Electric hot water supplies
- Electric underfloor or other heating supplies
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