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SB-OffGrid-TI-US-en-19 | Version 1.9

AMERICAN ENGLISH

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.
This technical information will inform you about the following topics:

• Which PV inverters you can use in off-grid systems and battery-backup systems
• Which parameters you need to set in the PV inverter
• What type of communication you need to install in battery-backup systems
• Which values the parameters of PV inverters will take in stand-alone mode
• How the output power of the PV inverter can be limited by the Frequency-Shift Power Control (FSPC) function of the 

Sunny Island

Technical Information

PV Inverters

Use of PV Inverters in Off-Grid and Battery-Backup Systems in North and South America

Summary of Contents for SB3.0-1SP-US-40

Page 1: ...cal information will inform you about the following topics Which PV inverters you can use in off grid systems and battery backup systems Which parameters you need to set in the PV inverter What type of communication you need to install in battery backup systems Which values the parameters of PV inverters will take in stand alone mode How the output power of the PV inverter can be limited by the Fr...

Page 2: ... 5000US No SB 6000US No SB 7000US No SB 8000US No SB 2000HFUS 30 No SB 2500HFUS 30 No SB 3000HFUS 30 No SB 3000TL US 22 1 No SB 3800TL US 22 1 No SB 4000TL US 22 1 No SB 5000TL US 22 1 No SB 6000TL US 22 1 No SB 7000TL US 22 1 No SB 7700TL US 22 1 No SB3 0 1SP US 40 Yes SB3 8 1SP US 40 Yes SB5 0 1 SP US 40 Yes SB6 0 1 SP US 40 Yes SB7 0 1SP US 40 Yes SB7 7 1 SP US 40 Yes SB 5000TLUS 12 No SB 6000T...

Page 3: ...ation product in use PV Inverters Off grid system battery backup system Available Sunny Tripower STP STP 12000TL US 10 Yes STP 15000TL US 10 Yes STP 20000TL US 10 Yes STP 24000TL US 10 Yes STP 30000TL US 10 Yes Compatible Not compatible System failures due to excessive power output of AC sources in the stand alone grid If the power of the AC sources e g PV inverters in off grid systems or battery ...

Page 4: ...e following table shows how backup operation must be set during configuration of the PV inverter via RS485 The parameter name and the configurable value depend on the PV inverter and the communication product in use In battery backup systems you operate the PV inverters with the locally typical country data set for grid connected PV systems as per UL1741 If the parameter is set to On all or OnAllP...

Page 5: ...a transmission USB Service Interface SMA order number USBPBS PV Inverters with Speedwire You can configure PV inverters with Speedwire using the following communication products Sunny Explorer SMA Cluster Controller 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 Se...

Page 6: ...c Max V 20 VAC Nom Fac delta Lower range in which the Sunny Boy is active relative to f0 Hz 4 5 starting from base frequency f0 Fac max Upper range where the Sunny Boy is active based on f0 Hz 4 5 starting from base frequency f0 dFac Max Max rate of change Hz 5 Fac start delta Frequency increase in relation to f0 at which point the power adjustment via frequency begins Hz 1 starting from base freq...

Page 7: ...ter is active fAC Start Delta is the frequency increase relative to fAC at which frequency based power control begins fAC Limit Delta is the frequency increase relative to fAC at which frequency based power control ends The power of the PV inverter at this point is 0 W If the limits fAC Delta or fAC Delta are exceeded the PV inverters disconnect from the utility grid When an external energy source...

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