SMA America, LLC
14 Connecting External Sources
Technical description
SI4548_6048-US-TB_en-13
127
The "133.03 GnRmgTm" display value is used to display the remaining time of the generator meter.
Depending on the current request or the phase in which the generator state machine is, the following
times are displayed:
• Remaining time of Run1h
• Remaining run time during the warm-up phase (Warm)
• Remaining minimum run time in operation (Run)
• Remaining run time during the power-down time (Cool)
• Remaining stop time after the power-down time has expired (Lock)
• Remaining time in the error state (Fail)
• Remaining time in the locked error state (FailLock)
14.1.8 Operation Together with PV Inverters and Wind Power
Inverters
If the battery is fully charged, the frequency limits the power output of the AC feed-in generators
(Sunny Boy). If the generator is now manually started, for example, the frequency would be lowered,
if required, as the Sunny Island synchronizes with the generator. The AC feeding-in generators
(Sunny Boys) would then feed additional energy into the system and possibly overload the batteries.
In order to prevent this, in this case the stand-alone grid frequency is temporarily increased as part of
the synchronization until the AC feed-in generators (Sunny Boy) are disconnected from the
stand-alone grid system as a result of the grid limits being exceeded.
Incorrect plant designs will result in excessive AC power of the PV inverters or wind power inverters.
Damage to the Sunny Island.
• The maximum AC power of the connected PV inverters and the connected wind power
inverters may not exceed 9 kW per SI 4548-US-10 or 12 kW per SI 6048-US-10.
• Observe the following:
P
AC max
of the PV inverter = 2 x P
AC nom
of the Sunny Island
P
AC max
of the wind power inverter = P
AC nom
of the Sunny Island
Summary of Contents for Sunny Island 4548-US
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