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Technical Information PV Inverters Use of PV Inverters in Off-Grid and Battery-Backup Systems in North and South America Content Both in off-grid systems and in the event of grid failures in battery-backup systems, grid fluctuations in the stand-alone grid are possible. This may cause severe deviations in nominal voltage and nominal frequency. Despite such fluctuations, all of the components in these systems must function without problems.
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1 Usable PV inverters (Modified: July 2017) SMA Solar Technology America LLC 1 Usable PV inverters (Modified: July 2017) PV Inverters Off-grid system battery-backup Available? system Sunny Boy (SB) SB 700U ✓ ✖ SB 3000US ✓ ✓ SB 3800-US-10 ✓...
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SMA Solar Technology America LLC 2 Configuration of PV Inverters in Off-Grid Systems PV Inverters Off-grid system battery-backup Available? system Sunny Tripower (STP) STP 12000TL-US-10 ✖ ✖ STP 15000TL-US-10 ✖ ✖ STP 20000TL-US-10 ✖ ✖ STP 24000TL-US-10 ✖ ✖ STP 30000TL-US-10 ✖...
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3 Configuration of PV Inverters in Battery-Backup Systems SMA Solar Technology America LLC Setting the Country Data set via Speedwire The following table shows how the country data set must be set during configuration of the PV inverters via Speedwire.
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4 Communication Products for Configuring PV Inverters SMA Grid Guard code required to change grid-relevant parameters To change grid-relevant parameters in the PV inverter after ten operating hours, you will need the SMA Grid Guard code. • Select a communication product corresponding to the type of communication and the PV inverter used.
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5 Parameter Values in Stand-Alone Mode SMA Solar Technology America LLC 5 Parameter Values in Stand-Alone Mode The OFF Grid setting for the Default parameter affects the following parameters of the PV inverter that communicates via RS485. Parameters Unit Value...
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SMA Solar Technology America LLC 6 Frequency Shift Power Control (FSPC) 6 Frequency Shift Power Control (FSPC) If PV inverters are connected on the AC side in off-grid operation or back-up operation, the Sunny Island must be able to limit their output power. This situation can occur, for example, when the battery of the Sunny Island is fully charged and the PV power available from the PV array exceeds the power required by the connected loads.
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