Functions
2.2 Protection Data Interfaces and Protection Data Topology
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
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Figure 2-9 Principle for external button wiring for controlling the differential protection test mode
Bu1 Button „Deactivating differential protection test mode“
Bu2 Button „Activating differential protection test mode“
Figure 2-10 Principle for external switch wiring for controlling the differential protection test mode
S Switch „Activating/deactivating differential protection test mode“
1) Binary input as NO contact
2) Binary input as NC contact
If a test switch is to be used for changing to test mode, we recommed the following procedure:
• Block the differential protection via a binary input.
• Use the test switch to activate/deactivate the test mode.
• Reset the blocking of the differential protection via the binary input.
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