External Circuitry; Short-Circuit Indicator - Siemens SICAM A8000 Series Manual

2.8.6

External Circuitry

The following circuitry variants are examples and not related exclusively to the shown values.
Danger
Works on the circuitry may be performed in de-energized state only!
During electrical installation, all the rules and regulations of power systems must be considered.
2.8.6.1

Short-Circuit Indicator

The current inputs I1, I2/IN, I3 are connected via the adaptor module CM-8820 with the
measuring transformers of the corresponding phase currents.
In this configuration, the module functions as short-circuit indicator. Fault information on the
direction is not provided.
S1
P1
Note
With this connection scheme, the accuracy of ground current measurements for isolated/resonant ground
connections cannot be assured.
SICAM A8000 Series, SICAM I/O Modules
DC8-012-2.06, Edition 09.2019
S2
P2
S1 S2
P1
P2
S1 S2
P1 P2
CM-8820
AI-8510
AI-8510
CM-8820
Unrestricted
Standard I/O Modules
59