ABB Relion 670 series - Page 12

Completing the test..............................................................168
Four step phase overcurrent protection OC4PTOC..................168
Verifying the settings............................................................168
Completing the test..............................................................170
Instantaneous residual overcurrent protection EFPIOC ...........170
Measuring the operate limit of set values.............................170
Completing the test..............................................................170
Four step residual overcurrent protection EF4PTOC ...............170
Four step directional earth fault protection...........................171
Four step non-directional earth fault protection....................171
Completing the test..............................................................172
Four step negative sequence overcurrent protection
NS4PTOC .................................................................................172
Completing the test..............................................................173
Sensitive directional residual overcurrent and power
protection SDEPSDE ................................................................173
Measuring the operate and time limit for set values.............174
Completing the test..............................................................179
Thermal overload protection, two time constants TRPTTR ......179
Checking operate and reset values......................................179
Completing the test..............................................................180
Breaker failure protection CCRBRF..........................................180
Checking the phase current operate value, IP> ...................180
Checking the residual (earth fault) current operate value
IN> set below IP> .................................................................181
Checking the re-trip and back-up times................................181
Verifying the re-trip mode.....................................................181
Verifying the back-up trip mode............................................182
Verifying instantaneous back-up trip at CB faulty
condition...............................................................................183
Verifying the case RetripMode = Contact .............................183
Verifying the function mode Current&Contact ......................184
Completing the test..............................................................185
Pole discordance protection CCRPLD......................................185
Verifying the settings............................................................185
Completing the test..............................................................186
Directional underpower protection GUPPDUP .........................186
Verifying the settings............................................................186
Completing the test..............................................................188
Directional overpower protection GOPPDOP ...........................188
Verifying the settings............................................................188
Completing the test..............................................................189
Negative-sequence time overcurrent protection for
machines NS2PTOC ................................................................189
Table of contents
6
Installation and commissioning manual