Input Module - GE P741 Technical Manual

P74x/EN FD/Na7
(FD) 9-12
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.
FD
FIGURE 5: MAIN INPUT BOARD
Firmware Design
MiCOM P741, P742, P743