Operation
P74x/EN OP/Na7
MiCOM P741, P742, P743
(OP) 5-
43
OP
5.
COMMUNICATIONS BETWEEN PU AND CU
The P74x scheme can be either centralised in one cubicle or distributed in cubicles housing
other protection depending on the availability of space. Either way the Peripheral Units still
need to communicate with the central unit and vice versa. Each central unit has up to 7
communication boards each accommodating inputs from 4 peripheral units. Thus each
central unit can accommodate up to 28 peripheral units.
Note:
From software E1.0, model 50, The CU and all the Pus must have the
same model number (digits 12 & 13). When a PU with a not
compatible model number and software reference is connected to a
Central Unit, the CU will not recognise the PU and will show the
Locking Level 2 Error and alarm.
5.1
Communications link
The following communication media is used for the communication channel within the P74x
scheme. The data rate is 2.5 Mbits/sec.
5.2
Direct optical fibre link, 850nm multi-mode fibre
The units are connected directly using two 850nm multi-mode optical fibres for each
signalling channel. Multi-mode fibre type 62.5/125
µ
m is suitable and standard BFOC/2.5
type fibre optic connectors are used. These are commonly known as “ST” connectors (“ST”
is a registered trademark of AT&T).
FIGURE 29: MODULE INTERCONNECTION
This is typically suitable for connection up to 1km.
Summary of Contents for P741
Page 2: ......
Page 4: ......
Page 6: ...P74x EN IT Na7 Introduction MiCOM P741 P742 P743 ...
Page 8: ...P74x EN IT Na7 Introduction IT 1 2 MiCOM P741 P742 P743 IT ...
Page 18: ...P74x EN TD Na7 Technical Data MiCOM P741 P742 P743 ...
Page 30: ...P74x EN TD Na7 Technical Data TD 2 14 MiCOM P741 P742 P743 TD ...
Page 32: ...P74x EN GS Na7 Getting Started MiCOM P741 P742 P743 ...
Page 70: ...P74x EN ST Na7 Getting Started MiCOM P741 P742 P743 ...
Page 72: ...P74x EN ST Na7 Settings ST 4 2 MiCOM P741 P742 P743 ST ...
Page 116: ...P74x EN OP Na7 Operation MiCOM P741 P742 P743 ...
Page 120: ...P74x EN OP Na7 Operation OP 5 4 MiCOM P741 P742 P743 OP ...
Page 136: ...P74x EN OP Na7 Operation OP 5 20 MiCOM P741 P742 P743 OP FIGURE 8 CB FAIL LOGIC ...
Page 166: ...P74x EN AP Na7 Application Notes MiCOM P741 P742 P743 ...
Page 234: ...P74x EN PL Na7 Programmable Logic MiCOM P741 P742 P743 ...
Page 290: ...P74x EN PL Na7 Programmable Logic PL 7 56 MiCOM P741 P742 P743 PL ...
Page 291: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 57 PL ...
Page 292: ...P74x EN PL Na7 Programmable Logic PL 7 58 MiCOM P741 P742 P743 PL ...
Page 294: ...P74x EN PL Na7 Programmable Logic PL 7 60 MiCOM P741 P742 P743 PL ...
Page 295: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 61 PL ...
Page 296: ...P74x EN PL Na7 Programmable Logic PL 7 62 MiCOM P741 P742 P743 PL ...
Page 298: ...P74x EN PL Na7 Programmable Logic PL 7 64 MiCOM P741 P742 P743 PL ...
Page 299: ...Programmable Logic P74x EN PL Na7 MiCOM P741 P742 P743 PL 7 65 PL ...
Page 300: ...P74x EN PL Na7 Programmable Logic PL 7 66 MiCOM P741 P742 P743 PL ...
Page 302: ...P74x EN MR Na7 Measurements and Recording MiCOM P741 P742 P743 ...
Page 324: ...P74x EN FD Na7 Firmware Design MiCOM P741 P742 P743 ...
Page 344: ...P74x EN FD Na7 Firmware Design FD 9 20 MiCOM P741 P742 P743 FD FIGURE 10 P74x SYSTEM OVERVIEW ...
Page 351: ...Firmware Design P74x EN FD Na7 MiCOM P741 P742 P743 FD 9 27 FD ...
Page 353: ...P74x EN CM Na7 Commissioning MiCOM P741 P742 P743 ...
Page 429: ...P74x EN MT Na7 Maintenance MiCOM P741 P742 P743 ...
Page 431: ...P74x EN MT Ma7 Maintenance MT 11 2 MiCOM P741 P742 P743 MT ...
Page 451: ...P74x EN TS Na7 Troubleshooting MiCOM P741 P742 P743 ...
Page 453: ...P74x EN TS Na7 Troubleshooting TS 12 2 MiCOM P741 P742 P743 TS ...
Page 475: ...P74x EN SC Na7 SCADA Communications MiCOM P741 P742 P743 ...
Page 499: ...P74x EN SC Na7 SCADA Communications SC 13 24 MiCOM P741 P742 P743 SC ...
Page 501: ...P74x EN SG Na7 Symbols and Glossary MiCOM P741 P742 P743 ...
Page 511: ...P74x EN SG Na7 Symbols and Glossary SG 14 10 MiCOM P741 P742 P743 SG Logic Gates ...
Page 513: ...P74x EN IN Na7 Installation MiCOM P741 P742 P743 ...
Page 515: ...P74x EN IN Na7 Installation IN 15 2 MiCOM P741 P742 P743 IN ...
Page 528: ...Installation P74x EN IN Na7 MiCOM P741 P742 P743 IN 15 15 IN FIGURE 6 P742 40TE REAR VIEW ...
Page 533: ...P74x EN VH Na7 Firmware and Service Manual Version History MiCOM P741 P742 P743 ...
Page 542: ...APPENDIX A WIRING DIAGRAMS ...
Page 543: ...Appendix A Wiring Diagrams P74x P74x EN M Na7 ...
Page 559: ......