Technical Data
This chapter provides the technical data of the device SIPROTEC 7SJ62/64 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 draw-
ings.
4.1 General Device Data 438
4.2 Definite-time Overcurrent Protection 450
4.3 Inverse-time Overcurrent Protection 452
4.4 Directional Overcurrent Protection 462
4.5 Inrush Restraint 464
4.6 Dynamic Cold Load Pickup 465
4.7 Single-phase Overcurrent Protection 466
4.8 Voltage Protection 467
4.9 Negative Sequence Protection (definite-time characteristic) 469
4.10 Negative Sequence Protection (inverse-time characteristics) 470
4.11 Motor Starting Time Supervision 476
4.12 Motor Restart Inhibit 477
4.13 Load Jam Protection 478
4.14 Frequency Protection 479
4.15 Undervoltage-controlled reactive power protection (27/Q) 480
4.16 Thermal Overload Protection 482
4.17 Ground Fault Detection (Sensitive/Insensitive) 484
4.18 Intermittent Ground Fault Protection 493
4.19 Directional intermittent ground fault protection 494
4.20 Automatic Reclosing 495
4.21 Fault Locator 496
4.22 Breaker Failure Protection 497
4.23 Flexible Protection Functions 498
4.24 Synchronization Function 501
4.25 Temperature Detection 503
4.26 User-defined Functions (CFC) 504
4.27 Additional Functions 510
4.28 Switching Device Control 515
4.29 Dimensions 516
4
SIPROTEC 4, 7SJ62/64, Manual 437
C53000-G1140-C207-8, Edition 08.2016
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