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Identification.............................................................................. 165
Application.................................................................................165
Setting guidelines...................................................................... 167
Section 9 Voltage protection........................................................ 173
Two step undervoltage protection UV2PTUV ................................173
Identification.............................................................................. 173
Application.................................................................................173
Setting guidelines...................................................................... 174
Equipment protection, such as for motors and generators...174
Disconnected equipment detection...................................... 174
Power supply quality ........................................................... 174
Voltage instability mitigation................................................. 174
Backup protection for power system faults...........................174
Settings for two step undervoltage protection...................... 175
Two step overvoltage protection OV2PTOV ..................................176
Identification.............................................................................. 176
Application.................................................................................177
Setting guidelines...................................................................... 177
Equipment protection, such as for motors, generators,
overvoltage protection.......................................................... 178
Section 10 Frequency protection....................................................181
Underfrequency protection SAPTUF ............................................. 181
Overfrequency protection SAPTOF ...............................................182
Identification.............................................................................. 182
Application.................................................................................183
Setting guidelines...................................................................... 183
Rate-of-change of frequency protection SAPFRC .........................184
Frequency time accumulation protection function FTAQFVR........ 185
Identification.............................................................................. 185
Application.................................................................................185
Setting guidelines...................................................................... 187
Table of contents
4
Phasor measurement unit RES670 2.2 IEC
Application manual
Содержание Relion RES670
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