Alstom MiCOM P546 - Page 178

P54x/EN OP/La4 Operation
(OP) 5-4 MiCOM P543, P544, P545 & P546
OP
2.1.8 P590 Series optical fiber to electrical interface units 107
2.1.9 Multiplexer link with G.703 electrical interface using auxiliary optical fibers and type P591
interface 108
2.1.10 Multiplexer link with V.35 electrical interface using auxiliary optical fibers and type P592
interface 108
2.1.11 Multiplexer link with X.21 electrical interface using auxiliary optical fibers and type P593
interface 109
2.1.12 Protection communications connection over unconditioned pilot wires 110
2.1.12.1 Pilot isolation 111
2.1.12.2 Baseband modem and P590 specification 111
2.1.12.3 Baseband modem propagation delay 112
2.1.12.4 Baseband modem and relay configuration 112
2.1.13 Protection communications scheme set-up 113
2.1.14 Dual redundant (“hot standby”) 113
2.1.15 Three ended system 113
2.1.16 Protection communications address 113
2.1.17 Reconfiguration of three-ended system 115
2.1.18 User reconfiguration 115
2.1.19 Energization reconfiguration 116
2.2 InterMiCOM
64
introduction 117
2.2.1 Definition of teleprotection commands 117
2.2.2 General features & implementation 118
2.2.3 Functional assignment 119
2.3 InterMiCOM
64
statistics & diagnostics 119
2.3.1 InterMiCOM
64
scheme setup - application 119
2.3.1.1 Teleprotection communications address 120
2.3.1.2 IMx fallback mode 120
2.3.1.3 InterMiCOM
64
and differential communications 121
2.3.2 Permissive Intertrip 121
2.3.3 Clock source 122
2.3.4 Communication alarm 122
2.3.5 Communication error statistics 122
2.3.6 Communications delay timer 122
2.3.7 Communications fail timer 122
2.3.8 Communications fail mode 123
2.3.9 MiCOM P594 global positioning system (GPS) synchronizing module 123
3. OPERATION OF NON PROTECTION FUNCTIONS 124
3.1 Voltage transformer supervision - fuse fail 124
3.1.1 Loss of one or two phase voltages 125
3.1.2 Loss of all three phase voltages under load conditions 125
3.1.3 Absence of three phase voltages upon line energization 125
3.1.4 VTS logic 126