ABB Relion 670 Series Application Manual page 85

1MRK 505 382-UEN E
LOCAL
IEC07000157 V1 EN-US
Figure 80: Communication structure with PDH/SDH port synchronized from transceiver
IED
Transceiver 21–219
SDH MUX
Both line differential protection IEDs are set as slaves.
Communication set-up, 670/650 series
Application Guide
< 10 m
SDH
IED
Transceiver
MUX
21-219
Multi-mode
fibre-optic
< 3.5 km Galvanic
connection
interface
G.703 E1
(2Mbit)
Slave
21-219
master
21-219
Terminal used for binary signal transfer
Optical-to-electrical interface converter
SDH multiplexer
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< 10 m
SDH
Transceiver
MUX 21-219
Galvanic
connection
interface
G.703 E1
(2Mbit)
Slaves (external clock)
Transparent
Communication set-up
REMOTE
IED
Multi-mode
fibre-optic
< 3.5 km
IEC07000157-1-en.vsdx
Section 5
79