SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
29
Functions 2
This chapter describes the numerous functions available on the SIPROTEC
4 device 7SK80. 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 30
2.2 Overcurrent Protection 50, 51, 50N, 51N 59
2.3 Directional Overcurrent Protection Ground 67, 67N 87
2.4 Dynamic Cold Load Pickup 103
2.5 Voltage Protection 27, 59 109
2.6 Negative Sequence Protection 46 120
2.7 Motor Protection (Motor Starting Protection 48, Motor Restart Inhibit 66, Load Jam Protection) 128
2.8 Frequency Protection 81 O/U 150
2.9 Thermal Overload Protection 49 154
2.10 Monitoring Functions 164
2.11 Ground Fault Protection 64, 67N(s), 50N(s), 51N(s) 185
2.12 Intermittent Ground Fault Protection 207
2.13 Dir. Intermittent earth fault protection 213
2.14 Breaker Failure Protection 50BF 218
2.15 Flexible Protection Functions 224
2.16 Reverse-Power Protection Application with Flexible Protection Function 237
2.17 Temperature Detection via RTD Box 245
2.18 Phase Rotation 256
2.19 Function Logic 258
2.20 Auxiliary Functions 260
2.21 Command Processing 286
2.22 Notes on Device Operation 298
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