Deactivating Grounding Conductor Monitoring; Setting Sma Shadefix; Setting The Rated Residual Current Of The Residual-Current Device - SMA SUNNY BOY 3.0 Operating Manual

SMA Solar Technology AG

8.15 Deactivating Grounding Conductor Monitoring

If the inverter is to be installed in an IT network or another grid configuration in which deactivation
of the grounding conductor monitoring is required, deactivate the grounding conductor monitoring
as follows.
The basic procedure for changing operating parameters is explained in another section (see
Section 8.10 "Changing Operating Parameters", page 62).
Procedure:
• In the parameter group Grid monitoring > Grid monitoring > Country standard set the
parameter PE connection monitoring to Off.

8.16 Setting SMA ShadeFix

You can set the time interval in which the inverter has to determine the optimum operating point. If
you do not want to use SMA ShadeFix, you can disable the feature.
The basic procedure for changing operating parameters is explained in another section (see
Section 8.10 "Changing Operating Parameters", page 62).
Procedure:
• In the parameter group DC-side > DC settings > SMA ShadeFix, set the parameter Time
interval of SMA ShadeFix and set the required time interval. The ideal time interval is
usually six minutes. This value should only be increased if the shading situation changes
extremely slowly.
☑ The inverter optimizes the MPP of the PV system at the predetermined time interval.
• In order to disable the SMA ShadeFix feature, in the parameter group DC-side > DC settings
> SMA ShadeFix, set the parameter SMA ShadeFix switched on to Off.
8.17 Setting the Rated Residual Current of the Residual-
Current Device
When using residual-current devices with a rated residual current of 30 mA, set the rated residual
current to 30 mA. In this way the inverter reduces the operational leakage currents and prevents a
false triggering of the residual-current device (for further information, see technical information
"Leading Leakage Currents" at www.SMA-Solar.com).
The basic procedure for changing operating parameters is explained in another section (see
Section 8.10 "Changing Operating Parameters", page 62).
Procedure:
• Select the parameter RCD adjustment and set it to 30 mA.
Operating manual SBxx-1AV-41-BE-en-12
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