ABB REX 521 Technical Reference Manual, Standard Configurations page 9

1MRS 751802-MUM Protection Relay
Technical Reference Manual, Standard Configurations
11.3.4.1.Protection signal routing ..................................183
11.3.4.2.Indication and control connections ...................183
11.4.Outgoing feeder, High H04 .......................................................184
11.4.1.Features .........................................................................184
11.4.2.Measurements ...............................................................186
11.4.3.Measurement connections .............................................186
11.4.4.Protection .......................................................................186
11.4.4.1.Non-directional earth-fault protection ...............186
11.4.4.2.Auto-reclosure function ....................................187
11.4.5.Connections ...................................................................187
11.4.5.1.Protection signal routing ..................................187
11.4.5.2.Indication and control connections ...................187
11.4.6.Implementations .............................................................187
11.5.Incoming feeder, High H05 .......................................................188
11.5.1.Features .........................................................................188
11.5.2.Measurements ...............................................................190
11.5.3.Protection .......................................................................190
11.5.3.1.Phase overcurrent protection ...........................190
11.5.3.2.Earth-fault protection ........................................190
11.5.3.3.Overvoltage and undervoltage protection ........190
11.5.4.Connections ...................................................................191
11.5.4.1.Protection signal routing ..................................191
11.5.4.2.Indication and control connections ...................192
11.5.5.Implementations .............................................................192
11.5.5.1.Blocking signal received from the outgoing
11.5.5.2.Outgoing blocking signal to the overcurrent
11.5.5.3.Earth-fault stage Io>>> to trip the breaker on
11.5.5.4.Circuit-breaker failure protection ......................192
11.5.5.5.Disturbance recorder .......................................192
11.5.5.6.Power quality ...................................................193
11.6.Measurement cubicle, High H06 ..............................................194
11.6.1.Features .........................................................................194
11.6.2.Measurements ...............................................................196
11.6.3.Protection .......................................................................196
11.6.3.1.Residual voltage protection ..............................196
11.6.3.2.Overvoltage and undervoltage protection ........196
11.6.3.3.Underfrequency protection ...............................197
11.6.4.Connections ...................................................................197
11.6.4.1.Protection signal routing ..................................197
feeder ...............................................................192
relay on the HV side .........................................192
the HV side of the transformer .........................192
REX 521
9