Siemens siprotec 7SD5 User Manual page 693

Index
Differential protection 27
Blocking 97
Charging current compensation 92, 101
Delay times 534
Delays 101
Emergency operation 534
Further influences 93
Inrush restraint 102, 534
Interblocking 97
Measured value synchronization 91
Pickup values 99, 101, 101
Protection data interfaces 531
Restraint 92
Self-restraint 534
Special features 39
Tolerances 93
Topology 531
Zone Z1 124
Direct connection 76
Direct Transfer Trip 181
Direction determination
Zero sequence system 215
Directional Blocking Scheme 192
Directional characteristic 140
Directional Comparison Pickup 185
Directional comparison pickup 233
Directional Unblocking Scheme 187
Display panel 417
Distance Protection
Earth Fault Detection 536
Earth Impedance Ratio 536
Mutual Impedance Ratio 536
Phase References 536
Times 538
Distance protection 28, 110
Distance measurement 537
Earth impedance ratio 50
Emergency operation 538
Fault detection 113
Pickup 536
Special features 40
Teleprotection schemes 540
Zone Z1 124
Double Earth Faults in Effectively Earthed Systems
127
Double Earth Faults in Non-earthed Systems 122
Double earth faults in non-earthed systems 127
Double Faults in Effectively Earthed Systems 121
E
Earth Fault Detection 110
Earth fault detection 125
Earth Fault Protection
Characteristics 541, 541
693
Determination of Direction 544
High Current Stage 541
Zero Sequence Power Protection Stage 543
Zero Sequence Voltage Time Protection Stage
(U0-inverse) 543
Earth fault protection 541
Determination of direction 225
Inrush restraint 543
Inverse time overcurrent stage with logarithmic
inverse characteristic 542
Inverse-time stage with ANSI
characteristic 542
Inverse-time stage with IEC characteristic 542
Teleprotection schemes 550
Zero sequence power stage 224
Earth Fault Protection Definite Time
Overcurrent Stage 541
Earth Impedance (Residual) Compensation 60
Echo Function 200
Echo function 204
Echo function (EF) 247
Electrical tests 526
EMC Tests for Interference Immunity (type
tests) 527
EMC Tests for Noise Emission (type test) 527
Emergency operation 24
End Fault Protection 370
Event buffer 418
Exchanging interfaces 452
External trip of the local tripping 535
F
Fast tripping zone (MHO) 157
Fast tripping zone (polygon) 143
Fault Annunciations 412
Fault direction 138
Fault locating
Single-ended 349
Fault location
Earth impedance ratio 50
Fault location options 420
Fault locator 565
Double earth fault 348
Double-ended 349
Single/double-ended 348
Fault loops 138
Fault Protocol 575
Fault Recording 575
Fault recording 25, 418, 429
Feedback Monitoring 442
Fernmesswerte 428
Fibre-optic cables 76, 473
Final Preparation of the Device 516
Flush Mounting 577, 578
7SD5 Manual
C53000-G1176-C169-1