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GE P741

GE P741
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P74
x/EN FD/Na7
Firmware Design
(FD) 9
-
18
MiCOM P74
1, P742, P743
FD
3. RELAY SOFTWARE
The relay software was introduced in the overview of the relay at the start of this manual
(P74x/EN FD). The software can be considered to be made up of five sections:
The real-time operating system
The system services software
The communication software
The platform software
The protection & control software
This section describes in detail the latter two of these, the platform software and the
protection & control software, which between them control the functional behaviour of the
relay. The figure below shows the structure of the relay software.
FIGURE 9: RELAY SOFTWARE STRUCTURE

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