4.1.3 Binary Inputs and Outputs......................................................................................... 355
4.1.4 Communication Interfaces.........................................................................................356
4.1.5 Electrical Tests...........................................................................................................358
4.1.6 Mechanical Tests....................................................................................................... 360
4.1.7 Climatic Stress Tests.................................................................................................. 360
4.1.8 Service Conditions..................................................................................................... 361
4.1.9 Constructive Design...................................................................................................361
4.1.10 UL certification conditions......................................................................................... 362
4.2 Definite-time Overcurrent Protection...............................................................................363
4.3 Inverse-time Overcurrent Protection................................................................................365
4.4 Directional Overcurrent Protection.................................................................................. 376
4.5 Inrush Restraint...............................................................................................................378
4.6 Dynamic Cold Load Pickup...............................................................................................379
4.7 1-phase Overcurrent Protection.......................................................................................380
4.8 Voltage Protection.......................................................................................................... 381
4.9 Negative Sequence Protection (definite-time characteristic).............................................383
4.10 Negative Sequence Protection (inverse-time characteristics)............................................384
4.11 Frequency Protection 81 O/U...........................................................................................390
4.12 Undervoltage-controlled reactive power protection (27/Q)...............................................391
4.13 Thermal Overload Protection...........................................................................................393
4.14 Ground Fault Detection (Sensitive/Insensitive).................................................................395
4.15 Intermittent Ground Fault Protection...............................................................................401
4.16 Directional intermittent ground fault protection.............................................................. 402
4.17 Automatic Reclosing....................................................................................................... 403
4.18 Fault Locator...................................................................................................................404
4.19 Breaker Failure Protection 50BF ...................................................................................... 405
4.20 Flexible Protection Functions ..........................................................................................406
4.21 Synchrocheck 25 ............................................................................................................409
4.22 User-defined Functions (CFC).......................................................................................... 411
4.23 Auxiliary Functions..........................................................................................................416
4.24 Switching Device Control................................................................................................ 421
4.25 Dimensions.....................................................................................................................422
4.25.1 Panel Flush and Cubicle Mounting (Housing Size 1/6) ................................................422
4.25.2 Panel Surface Mounting (Housing Size 1/6) ............................................................... 423
4.25.3 Bottom view..............................................................................................................423
4.25.4 Varistor..................................................................................................................... 424
A Ordering Information and Accessories.....................................................................................................425
A.1 Ordering Information 7SJ80 ........................................................................................... 426
A.2 Accessories..................................................................................................................... 431
B Terminal Assignments..............................................................................................................................433
B.1 7SJ80 — Housing for panel flush mounting and cubicle installation and for panel
surface mounting ...........................................................................................................434
C Connection Examples............................................................................................................................... 441
C.1 Connection Examples for Current and Voltage Transformers............................................442
Table of Contents
SIPROTEC 4, 7SJ80, Manual 17
E50417-G1140-C343-A8, Edition 12.2017
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