Functions - Siemens SIPROTEC 4 7UT6 Series Manual

2

Functions

This chapter describes the individual functions of the SIPROTEC 4 device 7UT6x. It shows the setting possibili-
ties for each function in maximum configuration. Guidelines for establishing setting values and, where
required, formulae are given.
Based on the following information, it can also be determined which of the provided functions should be
used.
2.1 General
2.2 Differential Protection
2.3 Restricted Earth Fault Protection
2.4 Time Overcurrent Protection for Phase and Residual Currents
2.5 Time Overcurrent Protection for Earth Current
2.6 Dynamic Cold Load Pickup for Time Overcurrent Protection
2.7 Single-Phase Time Overcurrent Protection
2.8 Unbalanced Load Protection
2.9 Thermal Overload Protection
2.10 RTD-Boxes for Overload Detection
2.11 Overexcitation Protection
2.12 Reverse Power Protection
2.13 Forward Power Supervision
2.14 Undervoltage Protection
2.15 Overvoltage Protection
2.16 Frequency Protection
2.17 Circuit Breaker Failure Protection
2.18 External Trip Commands
2.19 Monitoring Functions
2.20 Function Control
2.21 Disconnection of Measuring Locations
2.22 Auxiliary Functions
2.23 Average Values, Minimum and Maximum Values
2.24 Command Processing
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
28
92
125
136
161
172
177
187
200
211
218
224
229
233
236
239
244
251
254
271
273
276
301
303
27