Functions - Siemens SIPROTEC 4 7SD80 Manual

2

Functions

This chapter describes the numerous functions available on the SIPROTEC 4 device 7SD80. 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 Phase Comparison Protection and Ground Differential Protection
2.3 Breaker Intertrip and Remote Tripping
2.4 Backup overcurrent
2.5 InRush Restraint
2.6 Circuit Breaker Failure Protection 50BF
2.7 Thermal Overload Protection 49
2.8 Undervoltage and Overvoltage Protection (optional) 27/59
2.9 Frequency Protection (optional) 81
2.10 Direct Local Trip
2.11 Automatic Reclosure Function (optional) 79
2.12 Circuit Breaker Test
2.13 Direct Remote Trip and Transmission of Binary Information
2.14 Monitoring Functions
2.15 Flexible Protection Functions
2.16 Function Logic
2.17 Auxiliary Functions
2.18 Breaker Control
2.19 Notes on Device Operation
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
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