Table of Contents
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Index
D
DC Voltage 433
Dead Line Check 248
Definite Time Overcurrent Stage 3I0> 153
Definite Time Stages 164
Definite Time Very High Set Current Stage
3I0>> 153
Definite Time Very High Set Current Stage
3I0>>> 152
Delay Time (Freq.) 291
Delay Times 305
Detection of the Circuit Breaker Position 333
Determination of Direction 169
Device and System Logic 523
Device Logout (Functional Logout) 121
Digital Transmission 147
Digital Transmission (E/F) 191
Direct Transfer Trip 131
Direction Check with Load Current 414
Direction Determination with Negative Sequence
System 160
Direction Determination with Zero-Sequence
System 159
Directional Blocking Scheme 140, 185
Directional Comparison Pickup 177
Directional Unblocking Scheme 136, 181
Display of Measured Values 351
Display panel 346
Distance Protection 25, 62, 444, 448
Double Earth Faults in Effectively Earthed
Systems 74
Double Earth Faults in Non-earthed Systems 69,
74
Double Faults in Effectively Earthed Systems 74
E
Earth Fault Detection 62
Earth Fault Overcurrent Protection 450
Earth Fault Protection 459
Earth Fault Recognition 72
Earth Impedance (Residual) Compensation 49
Echo Function 144, 148
Echo Function (E/F) 193
Electrical Tests 439
EMC Tests for Interference Immunity (type
tests) 439
EMC Tests for Noise Emission (type test) 440
End Fault Protection 308, 311
Exchanging Interfaces 377
External Direct and Remote Tripping 463
External local trip 206
602
F
Failure of the Measuring Voltage 323
Fault Annunciations 38
Fault Annunciations (Buffer: Trip Log) 348
Fault Location 475
Fault Protocol 485
Fault Recording 23, 60, 485
Feedback Monitoring 368
Final Preparation of the Device 430
Flush Mounting 486, 487
Forced Three-pole Trip 248
Frequency Measurement 288
Frequency Protection 474
Frequency protection 288
Function Control 330
Function Modules 481
Functional Logout 118
Fuse Failure Monitor 322
G
General 32
General Interrogation 349
Grading Coordination Chart 86, 98
H
High Set Current Stages Iph>>, 3I0>> 215
High-set Current Stage I>> 215
Humidity 442
I
Independent zones 88, 99
Information to a Control Centre 348
Initiation 302
Input/Output Board C-I/O-1
Input/Output Board C-I/O-10 380
Inrush Stabilization 159, 171
Instantaneous High-Current Switch-onto-Fault
Protection 467
Instantaneous Tripping 207
Insulation Test 439
Interlocking 523
Inverse Time Overcurrent Stage 155
Inverse Time Overcurrent Stage 3I0P 153
Inverse Time Stage with ANSI Characteristic 165
Inverse Time Stage with IEC Characteristic 165
Inverse Time Stage with Logarithmic Inverse
Characteristic 166
7SA522 Manual
C53000-G1176-C155-3
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