Verifying the settings............................................................ 162
Completing the test.............................................................. 163
Directional underpower protection GUPPDUP ......................... 163
Verifying the settings............................................................ 164
Completing the test.............................................................. 165
Directional overpower protection GOPPDOP ...........................165
Verifying the settings............................................................ 165
Completing the test.............................................................. 166
Broken conductor check BRCPTOC ........................................ 166
Measuring the operate and time limit of set values.............. 166
Completing the test.............................................................. 167
Voltage-restrained time overcurrent protection VRPVOC......... 167
Verifying the settings............................................................ 167
Completing the test.............................................................. 170
Voltage protection...........................................................................171
Two step undervoltage protection UV2PTUV ...........................171
Verifying the settings............................................................ 171
Completing the test.............................................................. 172
Two step overvoltage protection OV2PTOV .............................172
Verifying the settings............................................................ 172
Extended testing...................................................................173
Completing the test.............................................................. 173
Two step residual overvoltage protection ROV2PTOV ............ 173
Verifying the settings............................................................ 173
Completing the test.............................................................. 174
Overexcitation protection OEXPVPH ....................................... 174
Verifying the settings............................................................ 174
Completing the test.............................................................. 175
Voltage differential protection VDCPTOV .................................175
Check of undervoltage levels............................................... 175
Check of voltage differential trip and alarm levels................177
Check of trip and trip reset timers........................................ 178
Final adjustment of compensation for VT ratio differences . 179
Completing the test.............................................................. 179
Loss of voltage check LOVPTUV ............................................. 179
Measuring the operate limit of set values.............................179
Completing the test.............................................................. 180
Radial feeder protection PAPGAPC.......................................... 180
Verifying the settings............................................................ 180
Completing the test.............................................................. 182
Frequency protection......................................................................182
Underfrequency protection SAPTUF ........................................ 182
Verifying the settings............................................................ 182
Table of contents
6 Line distance protection REL670 2.1 IEC
Commissioning manual
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