Sunny Boy 2500U Installation and Operator’s Manual
SB2500U-11:NE - 43 - SMA Regelsysteme GmbH
4.7 Measurement Precision
Any kind of measurement always depends on the accuracy. The reproducibility of the
measurement values is conceived for an ambient temperature of 77 °F (25 °C). Other
temperatures must be evaluated with respect to the inaccuracy resulting from these dif-
ferent temperatures.
[Unit] Range Resolution
Maximal fail-
ure
Display Measurement
ϑ
U
=+77 °F
input voltage U
PV
[V] 0...650 V 1 V 1,12 V ± 2 %
input current I
PV
[mA] 0...12000 mA 1 mA 12 mA ± 4 %
grid voltage U
AC
[V] 180...300 V 1 V 0,3 V ± 1 %
grid current I
AC
[mA] 0...15000 mA 1 mA 30 mA ± 2 %
grid frequency f
AC
[Hz] 45...55 Hz 0,01 Hz 0,01 Hz ± 0,1 %
output power P
AC
[W] 0...2500 W 1 W 1 W ± 3 %
energy yield E [kWh] 0...4,29* 10
9
Wmin 1 Wmin 20 Wmin ± 3 %
operating hours h [h] 0...4,29*10
9
s 1 s
0,67
µs
± 0,1 %
Table 4.1: Measurement accuracy of the Sunny Boy
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