Ground Fault Indicator; Fault Detector - Siemens SICAM A8000 Series Manual

Standard I/O Modules
2.8.6.2

Ground Fault Indicator

The current input I2/IN is connected via the adaptor module CM-8820 with the sum current
measuring transformer.
In this configuration, the module functions as non-directional ground fault indicator.
2.8.6.3

Fault Detector

The current inputs I1, I2/IN, I3 are connected via the adaptor module CM-8820 with the
corresponding measuring transformers. Additionally, the voltage inputs U1, U2, U3 are
connected
•
through voltage transformers of 100 V/√3 with the middle-voltage network
•
through voltage transformers of 415 V/√3 with the low-voltage network
•
directly with 240 V with the low-voltage network
In this configuration, fault information with directional indication is output. Thereby, also all the
measured and calculated measurands are provided.
60
CM-8820
S1 S2
P1 P2
AI-8510
Unrestricted
AI-8510
CM-8820
SICAM A8000 Series, SICAM I/O Modules
DC8-012-2.06, Edition 09.2019