ABB RED650 - Page 9

Power transformers in the protected zone............................. 93
Settings examples.................................................................. 97
Section 7 Impedance protection...................................................107
Distance protection ZMFPDIS........................................................ 107
Identification.............................................................................. 107
Application................................................................................. 107
System earthing................................................................... 107
Fault infeed from remote end............................................... 111
Load encroachment..............................................................112
Short line application............................................................ 113
Long transmission line application....................................... 113
Parallel line application with mutual coupling....................... 114
Tapped line application........................................................ 120
Setting guidelines...................................................................... 122
General.................................................................................122
Setting of zone 1.................................................................. 123
Setting of overreaching zone................................................123
Setting of reverse zone........................................................ 124
Setting of zones for parallel line application......................... 124
Setting the reach with respect to load.................................. 126
Zone reach setting lower than minimum load impedance.... 127
Zone reach setting higher than minimum load impedance...129
Other settings....................................................................... 130
ZMMMXU settings................................................................133
Power swing detection ZMRPSB ...................................................134
Identification.............................................................................. 134
Application................................................................................. 134
General.................................................................................134
Basic characteristics.............................................................135
Setting guidelines...................................................................... 135
Automatic switch onto fault logic ZCVPSOF ................................. 143
Identification.............................................................................. 143
Application................................................................................. 143
Setting guidelines...................................................................... 144
Section 8 Current protection.........................................................147
Instantaneous phase overcurrent protection PHPIOC .................. 147
Identification.............................................................................. 147
Application................................................................................. 147
Setting guidelines...................................................................... 148
Meshed network without parallel line................................... 148
Meshed network with parallel line........................................ 150
Directional phase overcurrent protection, four steps OC4PTOC....152
Table of contents
Line differential protection RED650 2.2 IEC 3
Application manual