Siemens DI-8112 - Accuracy of the Measured Values; Accuracy of the Measured Ground Current with Isolated;Resonant Ground Connection

Standard I/O Modules
56 Unrestricted SICAM A8000 Series, SICAM I/O Modules
DC8-012-2.06, Edition 09.2019
Note
The altitude at which
AI-8510 is operated shall be considered applicable for all devices in the system.
2.8.3.1 Accuracy of the Measured Values
Measured variable
Dependency of accuracy class acc. to
IEC 61557-12:2007-08 (K55)
Voltage U 1% (100/√3 up to 3%)
Phase current I 1% at nominal frequency
Power P 3%
Reactive power Q 3%
Apparent power S 3%
Power factor 3%
Frequency f (49…51/59…61 Hz) 1%
2.8.3.2 Accuracy of the Measured Ground Current with
Isolated/Resonant Ground Connection
Measured variable
Dependency of accuracy class acc. to
IEC 61557-12:2007-08 (K55)
Ground current I
N
setting 0.4…1.9 A 2.0…2000 A
Measuring range 0.2…2.89 A @ 50 Hz
0.2…2.99 A @ 60 Hz
2.9…600 A @ 50 Hz
3.0…600 A @ 60 Hz
Accuracy
±0.19 A for current range
0.2…2.9 A
±0.19 A for current range
2.8…11.99 A
±1% for current range 12…600 A