Siemens SIPROTEC 7UM62, Manual

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Table of Contents
viii
7UM62 Manual
C53000-G1176-C149-3
2.23.1 Functional Description ........................................................................................................ 164
2.23.2 Setting Hints ....................................................................................................................... 165
2.23.2.1 Settings of the Inverse Undervoltage Protection ................................................................ 166
2.23.2.2 Information for the Inverse Undervoltage Protection .......................................................... 166
2.24 Rate-of-Frequency-Change Protection df/dt (ANSI 81R) ................................................... 167
2.24.1 Functional Description ........................................................................................................ 167
2.24.2 Setting Hints ....................................................................................................................... 168
2.24.2.1 Settings of the Rate-of-Frequency-Change Protection....................................................... 170
2.24.2.2 Information for the Rate-of-Frequency-Change Protection................................................. 171
2.25 Jump of Voltage Vector ...................................................................................................... 172
2.25.1 Functional Description ........................................................................................................ 173
2.25.2 Setting Hints ....................................................................................................................... 174
2.25.2.1 Settings of the Vector Jump Detection ............................................................................... 175
2.25.2.2 Information for the Vector Jump Detection ......................................................................... 176
2.26 90–%–Stator Earth Fault Protection (ANSI 59N, 64G, 67G) .............................................. 177
2.26.1 Functional Description ........................................................................................................ 177
2.26.2 Setting Hints ....................................................................................................................... 181
2.26.2.1 Settings of the 90% Stator Earth Fault Protection .............................................................. 183
2.26.2.2 Information for the 90% Stator Earth Fault Protection ........................................................ 184
2.27 Sensitive Earth Fault Protection (ANSI 51GN, 64R)........................................................... 185
2.27.1 Functional Description ........................................................................................................ 185
2.27.2 Setting Hints ....................................................................................................................... 187
2.27.2.1 Settings of the Sensitive Earth Fault Protection ................................................................. 188
2.27.2.2 Information for the Sensitive Earth Current Detection ....................................................... 188
2.28 100–%–Stator Earth Fault Protection with 3rd Harmonics
(ANSI 27/59TN 3rd Harm.) ................................................................................................. 189
2.28.1 Functional Description ........................................................................................................ 189
2.28.2 Setting Hints ....................................................................................................................... 191
2.28.2.1 Settings of the 100–%–Stator Earth Fault Protection with 3rd Harmonics ........................ 192
2.28.2.2 Information for the 100–% Stator Earth Fault Protection with 3rd Harmonics .................... 193
2.29 100–% Stator Earth Fault Protection with 20 Hz Voltage Injection (ANSI 64G - 100%)..... 194
2.29.1 Functional Description ........................................................................................................ 194
2.29.2 Setting Hints ....................................................................................................................... 197
2.29.2.1 Settings of the 100-% Stator Earth Fault Protection ........................................................... 199
2.29.2.2 Information for the 100-% Stator Earth Fault Protection..................................................... 200
2.30 Rotor Earth Fault Protection R, fn (ANSI 64R) ................................................................... 201
2.30.1 Functional Description ........................................................................................................ 201
2.30.2 Setting Hints ....................................................................................................................... 203
2.30.2.1 Settings of the Rotor Earth Fault Protection ....................................................................... 204
2.30.2.2 Information for the Rotor Earth Fault Protection ................................................................. 205
2.31 Sensitive Rotor Earth Fault Protection with 1 to 3 Hz Square
Wave Voltage Injection (ANSI 64R - 1 to 3 Hz) .................................................................. 206
2.31.1 Functional Description ........................................................................................................ 206
2.31.2 Setting Hints ....................................................................................................................... 211
2.31.2.1 Settings of the Sensitive Rotor Earth Fault Protection........................................................ 212