ABB REL650 Applications Manual page 11

Application manual
Section 7 Current protection..............................................................169
Instantaneous phase overcurrent protection 3-phase output
PHPIOC (50).........................................................................................169
Identification.................................................................................... 169
Application....................................................................................... 169
Setting guidelines............................................................................ 170
Meshed network without parallel line..........................................170
Meshed network with parallel line...............................................172
Instantaneous phase overcurrent protection phase segregated
output SPTPIOC (50)............................................................................174
Identification.................................................................................... 174
Application....................................................................................... 174
Setting guidelines............................................................................ 174
Meshed network without parallel line..........................................175
Meshed network with parallel line...............................................177
Four step phase overcurrent protection 3-phase output OC4PTOC
(51/67).................................................................................................. 179
Identification.................................................................................... 179
Application....................................................................................... 179
Setting guidelines............................................................................ 180
Settings for steps 1 to 4 .............................................................181
2nd harmonic restrain.................................................................183
Four step phase overcurrent protection phase segregated output
OC4SPTOC 51_67............................................................................... 189
Identification.................................................................................... 189
Application....................................................................................... 189
Setting guidelines............................................................................ 190
Settings for steps 1 to 4..............................................................192
2nd harmonic restrain.................................................................194
Example......................................................................................197
Instantaneous residual overcurrent protection EFPIOC (50N)............. 199
Identification.................................................................................... 199
Application....................................................................................... 199
Setting guidelines............................................................................ 199
Four step residual overcurrent protection, zero, negative sequence
direction EF4PTOC (51N/67N)............................................................. 202
Identification.................................................................................... 202
Application....................................................................................... 202
Setting guidelines............................................................................ 204
Settings for steps 1 and 4 ..........................................................205
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