Functions - Siemens 7SC80 Manual

2

Functions

This chapter describes the numerous functions available on the SIPROTEC 4 device 7SC80. 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
2.2 Overcurrent Protection 50, 51, 50N, 51N
2.3 Directional Overcurrent Protection 67, 67N
2.4 Dynamic Cold Load Pickup
2.5 Single-Phase Overcurrent Protection
2.6 Voltage Protection 27, 59
2.7 47 Negative Phase Sequence Overvoltage
2.8 27/59 Under/Over Voltage for Vx
2.9 Negative Sequence Protection 46
2.10 Frequency Protection 81 O/U
2.11 Thermal Overload Protection 49
2.12 Monitoring Functions
2.13 Ground Fault Protection 64, 67N(s), 50N(s), 51N(s)
2.14 Automatic Reclosing System 79
2.15 Sectionalizer Function
2.16 Triple Single Mode
2.17 Fault Locator
2.18 Breaker Failure Protection 50BF
2.19 Flexible Protection Functions
2.20 Synchrocheck
2.21 Capacitor Control
2.22 Tap Changer
2.23 Recloser Capacitor Test
2.24 Phase Rotation
2.25 Function Logic
2.26 Auxiliary Functions
2.27 Breaker Control
2.28 Notes on Device Operation
2.29 Recloser Setting Summary
2.30 Additional Applications with 6 Voltage Inputs
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
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