ABB Relion 670 Series Application Manual page 87

1MRK 505 382-UEN E
IEC07000241 V1 EN-US
Figure 82: Protection system with redundant communication channels
Configuration in normal use
No configuration is needed in normal use. When two transceivers are connected back-to-back
(E1 ports connected to each other), one of the transceiver should be set to act as master.
Clock configuration switch
A rotary switch is included in the front panel to ease installation and testing (see Figure 83)
Clock synchronization configuration
The rotary switch on the front panel has 16 positions (HEX switch). At position 0 the switch's
arrow, visible through the adjusting hole, points straight down.
IEC07000249 V1 EN-US
Figure 83: Rotary switch for clock synchronization configuration
Communication set-up, 670/650 series
Application Guide
Telecommunication network:
path 1
Transceiver 21-219
Differential:
analogue + 8 binary
Distance:
192 binary
Main1
IED with
distance reserve
© Copyright 2017 ABB. All rights reserved
Telecommunication network:
path 2
Transceiver 21-219
Main1
IED with
distance reserve
IEC07000249-1-en.vsdx
Section 5
Communication set-up
IEC07000241-1-en.vsdx
81