Hitachi Relion 670 Series Applications Manual page 9

1MRK511407-UUS Rev. N
7.2 Out-of-step protection OOSPPAM (78)................................................................................... 103
7.2.1 Identification.......................................................................................................................... 103
7.2.2 Application.............................................................................................................................103
7.2.3 Setting guidelines.................................................................................................................. 106
Section 8 Current protection.......................................................................................... 109
8.1 Directional phase overcurrent protection, four steps OC4PTOC (51_67) .............................. 109
8.1.1 Function revision history........................................................................................................109
8.1.2 Identification.......................................................................................................................... 109
8.1.3 Application.............................................................................................................................109
8.1.4 Setting guidelines...................................................................................................................111
8.1.4.1
8.1.4.2
8.2 Directional residual overcurrent protection, four steps EF4PTOC (51N/67N)......................... 119
8.2.1 Function revision history........................................................................................................119
8.2.2 Identification...........................................................................................................................119
8.2.3 Setting guidelines.................................................................................................................. 120
8.2.3.1
8.2.3.2
8.2.3.3
8.2.3.4
8.2.3.5
8.2.3.6
8.3 Four step directional negative phase sequence overcurrent protection NS4PTOC (46I2)......125
8.3.1 Identification.......................................................................................................................... 126
8.3.2 Application.............................................................................................................................126
8.3.3 Setting guidelines.................................................................................................................. 127
8.3.3.1
8.3.3.2
8.4 Sensitive directional residual overcurrent and power protection SDEPSDE (67N).................131
8.4.1 Identification.......................................................................................................................... 131
8.4.2 Application ............................................................................................................................131
8.4.3 Setting guidelines.................................................................................................................. 132
8.5 Thermal overload protection, one time constant Fahrenheit/Celsius LFPTTR/LCPTTR (26). 140
8.5.1 Function revision history........................................................................................................140
8.5.2 Identification.......................................................................................................................... 140
8.5.3 Application.............................................................................................................................140
8.5.4 Setting guideline....................................................................................................................141
8.6 Directional underpower protection GUPPDUP (37)................................................................ 142
8.6.1 Identification.......................................................................................................................... 142
8.6.2 Application.............................................................................................................................142
8.6.3 Setting guidelines.................................................................................................................. 143
8.7 Directional overpower protection GOPPDOP (32).................................................................. 147
Phasor measurement unit RES670
Application manual
Settings for each step ......................................................................................................112
Setting example................................................................................................................115
Common settings for all steps.......................................................................................... 120
nd
2 harmonic restrain........................................................................................................121
Parallel transformer inrush current logic...........................................................................121
Switch onto fault logic.......................................................................................................122
Settings for each step (x = 1, 2, 3 and 4) ........................................................................ 123
Phase selection element.................................................................................................. 125
Settings for each step ......................................................................................................128
Common settings for all steps.......................................................................................... 130
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