Technical Data
This chapter provides the technical data of SIPROTEC 4 devices 7UT6x and their individual functions, including
the limiting values that must not be exceeded under any circumstances. The electrical and functional data for
devices equipped with all options are followed by the mechanical data with dimensional drawings.
4.1 General 396
4.2 Differential Protection 408
4.3 Restricted Earth Fault Protection 414
4.4 Time Overcurrent Protection for Residual Current 416
4.5 Time Overcurrent Protection for Earth Current 428
4.6 Dynamic Cold Load Pickup for Time Overcurrent Protection 430
4.7 Single-Phase Time Overcurrent Protection 431
4.8 Unbalanced Load Protection 432
4.9 Thermal Overload Protection 440
4.10 RTD-Boxes for Overload Detection 443
4.11 Overexcitation Protection 444
4.12 Reverse Power Protection 446
4.13 Forward Power Supervision 447
4.14 Undervoltage Protection 449
4.15 Overvoltage Protection 450
4.16 Frequency Protection 451
4.17 Circuit Breaker Failure Protection 453
4.18 External Trip Commands 454
4.19 Monitoring Functions 455
4.20 User-defined Functions (CFC) 456
4.21 Flexible Function 459
4.22 Additional Functions 461
4.23 Dimensions 465
4
SIPROTEC 4, 7UT6x, Manual 395
C53000-G1176-C230-5, Edition 09.2016
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