The 3-phase Hybrid is a grid connected inverter with powerful backup function supplying up to 3.3kW per phase of resistive load. For more information on loads which have been tested to work when connected to the backup port of the inverter, please see the latest user manual at chapter 11.2
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However, Sungrow never recommends connecting the whole customer house directly to the backup port of the 3-phase Hybrid.
During on-grid operation, the backup loads are supplied by the grid through the inverter grid port. By connecting the whole house behind the backup, the number of inductive/capacitive loads that cloud cause over-current/over-load fault is much higher. If loads with high start-up current are connected, the backup breaker will likely open causing the shutdown of backup loads, even in normal on-grid operation.
We recommend one chosen load per phase so 3-4 loads in total to be selected as backup loads during installation.
For further information, please download the user manual here.
This manual is intended for professional technicians who are responsible for installation, operation, maintenance and troubleshooting of inverters, and users who need to check inverter parameters. The inverter must only be installed by professional technicians.
The professional technician is required to meet the following requirements:
Know electronic, electrical wiring and mechanical expertise, and be familiar with electrical and mechanical schematics.
Have received professional training related to the installation, commissioning and troubleshooting of electrical equipment.
Be able to quickly respond to hazards or emergencies that occur during installation, commissioning and troubleshooting.
Be familiar with local standards and relevant safety regulations of electrical systems.
Read this manual thoroughly and understand the safety instructions related to operations.