SMA SC 500U Installation - Manual (Page 71)

SMA Solar Technology AG
Installation Guide SC500U-IUS093411 71
13.1 Measurement Accuracy
The Sunny Central is not equipped with a calibrated meter. The display values may deviate from the
actual values and must not be used as a basis for invoicing. The Sunny Central’s measured values are
required for the system management and to control the current to be fed to the grid.
Deviation
Voltage measurement: +/–5.6 V
Frequency measurement: +/–0.1 Hz
Disconnect time: +/–3 %