SMA PPM-10 - Page 66

10 Technical Data
SMA Solar Technology AG
Installation ManualPPM-10-IA-en-1666
Tolerances of the measuring modules of simple current and voltage measurement and synchronization
Frequency measurement -0.01Hz to +0.01Hz
Energy and power measurement (reference value: nomi-
nal apparent power of the measuring module)
-0.4% to +0.4%
Tolerances of the measuring modules for high-precision current and voltage measurement as well as
twice executed high-precision current and voltage measurement
Voltage measurement (reference value: nominal voltage
of the measuring module)
-0.1% to +0.1%
Current measurement (reference value: nominal current
of the measuring module)
-0.1% to +0.1%
Frequency measurement -0.001Hz to +0.001Hz
Energy and power measurement (reference value: nomi-
nal apparent power of the measuring module)
-0.2% to +0.2%
Tolerances of the measuring modules of high-precision current and voltage measurement and synchro-
nization
Voltage measurement (reference value: nominal voltage
of the measuring module)
-0.15% to +0.15%
Current measurement (reference value: nominal current
of the measuring module)
-0.08% to +0.08%
Frequency measurement -0.004Hz to +0.004Hz
Energy and power measurement (reference value: nomi-
nal apparent power of the measuring module)
-0.2% to +0.2%
Reverse power limits for gensets
Maximum permitted reverse power of a genset relative to
its nominal power
30%
Standby time until required grid disconnection at a re-
verse power of 30%*
at least 0.3s
Standby time until required grid disconnection at a re-
verse power of 10% to 30%*
at least 1s
Standby time until required grid disconnection at a re-
verse power of 5% to 10%*
at least 3s
Grid disconnection at a reverse power of less than 5%* is prohibited
* In relation to the nominal power of the genset
Overload limits for gensets
Maximum permitted overload of a genset relative to its
nominal power
20%
Standby time until required grid disconnection at an over-
load of 20%*
at least 0.3s