ABB RELION Series Technical Manual page 519

Grid automation
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1MRS758755 A
REC615 and RER615
Technical Manual
A070968 V5 EN
Figure 266:
Constant test current flow in parallel trip contacts and trip circuit
supervision
In case of parallel trip contacts, the recommended way to do the wiring is that the TCS
test current flows through all wires and joints.
Section 6
Supervision functions
513

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