SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
349
Technical Data 4
This chapter provides the technical data of the device SIPROTEC 7SK80 and its individual functions, including
the limit values that may not be exceeded under any circumstances. The electrical and functional data for the
maximum functional scope are followed by the mechanical specifications with dimensioned drawings.
4.1 General Device Data 350
4.2 Definite-time Overcurrent Protection 360
4.3 Inverse-time Overcurrent Protection 362
4.4 Directional overcurrent protection ground 373
4.5 Inrush Restraint 374
4.6 Dynamic Cold Load Pickup 375
4.7 Voltage Protection 27, 59 376
4.8 Negative Sequence Protection (definite-time characteristic) 378
4.9 Negative Sequence Protection (inverse-time characteristics) 379
4.10 Motor Starting Time Supervision 385
4.11 Motor Restart Inhibit 386
4.12 Load Jam Protection 387
4.13 Frequency Protection 388
4.14 Thermal Overload Protection 389
4.15 Ground Fault Detection (Sensitive/Insensitive) 391
4.16 Intermittent Ground Fault Protection 395
4.17 Directional intermittent ground fault protection 396
4.18 Breaker Failure Protection 50BF 397
4.19 Flexible Protection Functions 398
4.20 Temperature Detection 401
4.21 User-defined Functions (CFC) 403
4.22 Additional Functions 408
4.23 Switching Device Control 413
4.24 Dimensions 414
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