x/EN FD/Na7
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MiCOM P74
2.5 Input module
The input module provides the interface between the coprocessor board and the analogue
and digital signals coming into the relay. The input module consists of two PCBs; the main
input board and a transformer board.
The P742 and P743 provide four current inputs (3 phases and neutral).
P741 relay don’t use this board.
FIGURE 5: MAIN INPUT BOARD
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