SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
451
Technical Data 4
This chapter presents the technical data of the SIPROTEC 4 7UM62 device and its individual functions, includ-
ing the limit 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 453
4.2 Definite-Time Overcurrent Protection (ANSI 50, 51, 67) 465
4.3 Inverse-Time Overcurrent Protection (ANSI 51V) 466
4.4 Thermal Overload Protection (ANSI 49) 471
4.5 Unbalanced Load (Negative Sequence) Protection (ANSI 46) 473
4.6 Startup Overcurrent Protection (ANSI 51) 475
4.7 Differential Protection (ANSI 87G/87M/87T) for Generators and Motors 476
4.8 Differential Protection (ANSI 87G/87M/87T) for Transformers 478
4.9 Earth Current Differential Protection (ANSI 87GN,TN) 481
4.10 Underexcitation (Loss-of-Field) Protection (ANSI 40) 482
4.11 Reverse Power Protection (ANSI 32R) 483
4.12 Forward Active Power Supervision (ANSI 32F) 484
4.13 Impedance Protection (ANSI 21) 485
4.14 Out-of-Step Protection (ANSI 78) 487
4.15 Undervoltage Protection (ANSI 27) 488
4.16 Overvoltage Protection (ANSI 59) 490
4.17 Frequency Protection (ANSI 81) 491
4.18 Overexcitation (Volt/Hertz) Protection (ANSI 24) 492
4.19 Rate-of-Frequency-Change Protection df/dt (ANSI 81R) 494
4.20 Jump of Voltage Vector 495
4.21 90-%-Stator Earth Fault Protection (ANSI 59N, 64G, 67G) 496
4.22 Sensitive Earth Fault Protection (ANSI 51GN, 64R) 497
4.23 100-%-Stator Earth Fault Protection with 3rd Harmonics (ANSI 27/59TN 3rd Harm.) 498
4.24 100-%-Stator Earth Fault Protection with 20 Hz Voltage Injection (ANSI 64G - 100%) 499
4.25 Sensitive Earth Fault Protection B (ANSI 51GN) 500
4.26 Interturn Protection (ANSI 59N (IT)) 501
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