ABB Relion 670 Series Applications Manual page 425

1MRK 505 370-UUS Rev. K
Device 1
PhyPortA
PhyPortA
Device 3
IEC09000758 V4 EN-US
Figure 210: Parallel Redundancy Protocol (PRP)
Device 1
PhyPortA
PhyPortB
Device 3
IEC16000038 V1 EN-US
Figure 211: High-availability Seamless Redundancy (HSR)
Busbar protection REB670
Application manual
AP1
PhyPortB
Switch A
PhyPortB
AP1
AP1
PhyPortB
PhyPortA
AP1
© 2017 - 2021 Hitachi Power Grids. All rights reserved
Device 2
AP1
PhyPortA PhyPortB
Switch B
PhyPortA PhyPortB
AP1
Device 4
IEC09000758-4-en.vsd
Device 2
AP1
PhyPortA PhyPortB
PhyPortB PhyPortA
AP1
Device 4
IEC16000038-1-en.vsdx
Section 16
Ethernet-based communication
419