Siemens SIPROTEC 7SJ61, Manual, Page: 27 / 454

SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008 27
Functions
2
This chapter describes the numerous functions available on the SIPROTEC 4 device 7SJ61. It shows the
setting possibilities for each function in maximum configuration. Information with regard to the determination of
setting values as well as formulas, if required, are also provided.
Based on the following information, it can also be determined which of the provided functions should be used.
2.1 General 28
2.2 Overcurrent Protection 50, 51, 50N, 51N 48
2.3 Dynamic Cold Load Pickup 77
2.4 Single-Phase Overcurrent Protection 83
2.5 Negative Sequence Protection 46 94
2.6 Motor Protection 102
2.7 Thermal Overload Protection 49 124
2.8 Monitoring Functions 134
2.9 Ground Fault Protection 50N(s), 51N(s) 147
2.10 Intermittent Ground Fault Protection 156
2.11 Automatic Reclosing System 79 162
2.12 Breaker Failure Protection 50BF 185
2.13 Flexible Protection Functions 191
2.14 Temperature Detection via RTD Boxes 200
2.15 Phase Rotation 209
2.16 Function Logic 211
2.17 Auxiliary Functions 213
2.18 Breaker Control 244