ABB Relion 615 series, Product Manual, Page: 17 / 56

Ethernet switch
Redundancy
Box
IEC 61850 HSR
Redundancy
Box
Redundancy
Box
REF615 REF620
RET620 REM620 REF615
SCADA
Devices not supporting HSR
COM600
GUID-7996332D-7FC8-49F3-A4FE-FB4ABB730405 V1 EN
Figure 8. High availability seamless redundancy (HSR) solution
The choice between the HSR and PRP redundancy protocols
depends on the required functionality, cost and complexity.
The self-healing Ethernet ring solution enables a cost-efficient
communication ring controlled by a managed switch with
standard Rapid Spanning Tree Protocol (RSTP) support. The
managed switch controls the consistency of the loop, routes
the data and corrects the data flow in case of a communication
switch-over. The relays in the ring topology act as unmanaged
switches forwarding unrelated data traffic. The Ethernet ring
solution supports the connection of up to 30 615 series relays.
If more than 30 relays are to be connected, it is recommended
to split the network into several rings. The self-healing Ethernet
ring solution avoids single point of failure concerns and
improves the reliability of the communication.
Voltage Protection and Control 1MRS757058 K
REU615
Product version: 5.0 FP1
ABB 17