Relay Description P44x/EN HW/E33
MiCOM P441/P442 & P444
Page 1/44
CONTENT
1. RELAY SYSTEM OVERVIEW 5
1.1 Hardware overview 5
1.1.1 Power supply module 5
1.1.2 Main processor board 5
1.1.3 Co-processor board 5
1.1.4 Input module 5
1.1.5 Input and output boards 5
1.1.6 IRIG-B board (P442 and P444 only) 5
1.2 Software overview 7
1.2.1 Real-time operating system 7
1.2.2 System services software 7
1.2.3 Platform software 7
1.2.4 Protection & control software 7
1.2.5 Disturbance Recorder 7
2. HARDWARE MODULES 8
2.1 Processor board 8
2.2 Co-processor board 8
2.3 Internal communication buses 8
2.4 Input module 9
2.4.1 Transformer board 9
2.4.2 Input board 9
2.4.3 Universal opto isolated logic inputs 9
2.5 Power supply module (including output relays) 10
2.5.1 Power supply board (including RS485 communication interface) 11
2.5.2 Output relay board 11
2.6 IRIG-B board (P442 and P444 only) 11
2.7 2nd rear communication and InterMiCOM teleprotection board (optional) 11
2.8 Mechanical layout 12
3. RELAY SOFTWARE 13
3.1 Real-time operating system 13
3.2 System services software 13
3.3 Platform software 14
3.3.1 Record logging 14
3.3.2 Settings database 14
3.3.3 Database interface 14
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