
11.4.2.4 Test of the point SE (RRvsR, XRvsX).............................................................................................. 107
11.5 Current protection................................................................................................................................ 111
11.5.1 Four step phase overcurrent protection 3-phase output OC4PTOC (51_67)........................111
11.5.1.1 Verifying the settings................................................................................................................... 111
11.5.1.2 Completing the test...................................................................................................................... 112
11.5.2 Four step residual overcurrent protection, (Zero sequence or negative sequence
directionality) EF4PTOC (51N/67N).............................................................................................. 113
11.5.2.1 Four step directional ground fault protection........................................................................ 113
11.5.2.2 Four step non-directional ground fault protection................................................................113
11.5.2.3 Completing the test......................................................................................................................113
11.5.3 Four step negative sequence overcurrent protection NS4PTOC (46I2)................................114
11.5.3.1 Completing the test......................................................................................................................114
11.5.4 Sensitive directional residual overcurrent and power protection SDEPSDE (67N).............115
11.5.4.1 Measuring the trip and time limit for set values.....................................................................115
11.5.4.2 Completing the test......................................................................................................................119
11.5.5 Thermal overload protection, one time constant, Fahrenheit/Celsius LFPTTR/
LCPTTR (26)....................................................................................................................................... 120
11.5.5.1 Measuring the trip and time limit of set values......................................................................120
11.5.5.2 Completing the test..................................................................................................................... 120
11.5.6 Directional underpower protection GUPPDUP (37)................................................................... 121
11.5.6.1 Verifying the settings................................................................................................................... 121
11.5.6.2 Completing the test......................................................................................................................122
11.5.7 Directional overpower protection GOPPDOP (32)..................................................................... 122
11.5.7.1 Verifying the settings...................................................................................................................122
11.5.7.2 Completing the test......................................................................................................................123
11.6 Voltage protection................................................................................................................................123
11.6.1 Two step undervoltage protection UV2PTUV (27)..................................................................... 123
11.6.1.1 Verifying the settings...................................................................................................................123
11.6.1.2 Completing the test..................................................................................................................... 124
11.6.2 Two step overvoltage protection OV2PTOV (59).......................................................................125
11.6.2.1 Verifying the settings...................................................................................................................125
11.6.2.2 Extended testing...........................................................................................................................125
11.6.2.3 Completing the test..................................................................................................................... 125
11.7 Frequency protection...........................................................................................................................126
11.7.1 Underfrequency protection SAPTUF (81).................................................................................... 126
11.7.1.1 Verifying the settings...................................................................................................................126
11.7.1.2 Completing the test..................................................................................................................... 126
11.7.2 Overfrequency protection SAPTOF (81).......................................................................................127
11.7.2.1 Verifying the settings................................................................................................................... 127
11.7.2.2 Completing the test......................................................................................................................127
11.7.3 Rate-of-change frequency protection SAPFRC (81)...................................................................127
11.7.3.1 Verifying the settings................................................................................................................... 127
11.7.3.2 Completing the test..................................................................................................................... 128
Table of contents
4
Commissioning manual