ABB REX 521 Technical Reference Manual, Standard Configurations page 8

REX 521
8
Protection Relay
Technical Reference Manual, Standard Configurations
10.3.3.1.Auto-reclosure function .................................... 160
10.3.4.Protection signal routing ................................................ 163
10.3.5.Indication and control connections ................................ 163
10.3.6.Implementations ............................................................ 164
10.3.6.1.Definite trip alarm to output relay ..................... 164
10.3.6.2.Digital input to initiate auto-reclosing function . 165
10.3.6.3.Basic angle control by digital input .................. 165
11.Application examples, High ................................................ 167
11.1.Incoming feeder, High H01 ...................................................... 167
11.1.1.Features ........................................................................ 167
11.1.2.Measurements ............................................................... 169
11.1.3.Protection ...................................................................... 169
11.1.3.1.Overcurrent protection ..................................... 169
11.1.3.2.Synchro-check function ................................... 169
11.1.4.Connections ................................................................... 170
11.1.4.1.Protection signal routing .................................. 170
11.1.4.2.Indication and control connections .................. 170
11.1.5.Implementations ............................................................ 170
11.1.6.Blocking principles ......................................................... 170
11.1.6.1.Circuit-breaker failure protection ...................... 171
11.1.6.2.Trip-circuit supervision ..................................... 171
11.2.Incoming feeder, High H02 ...................................................... 172
11.2.1.Features ........................................................................ 172
11.2.2.Measurement connections ............................................ 174
11.2.3.Protection ...................................................................... 174
11.2.3.1.Overcurrent protection ..................................... 174
11.2.4.Connections ................................................................... 175
11.2.4.1.Protection signal routing .................................. 175
11.2.4.2.Indication and control connections .................. 176
11.2.5.Implementations ............................................................ 176
11.2.5.1.Blocking signal received from the outgoing
11.2.5.2.Blocking signal from I>-> stage to I>> stage ... 177
11.2.5.3.Circuit-breaker failure protection ...................... 177
11.2.5.4.Trip-circuit supervision ..................................... 178
11.3.Bus sectionalizer, High H03 ..................................................... 179
11.3.1.Features ........................................................................ 179
11.3.2.Measurements ............................................................... 181
11.3.3.Protection ...................................................................... 181
11.3.3.1.Overcurrent protection ..................................... 181
11.3.3.2.Synchro-check function ................................... 182
11.3.4.Connections ................................................................... 183
feeder and the bus sectionalizer ...................... 176
1MRS 751802-MUM