
Communication
26
Figure 16 Single channel, communication through dedicated fiber optical cable
IED
IED
Channel A
Channel B
Single-mode FO
Length: <60kM or
60~100kM
Overhead Line or Cable
Figure 17 Double channels, communication through dedicated fiber optical cable
Communication converter
The link between the IED and a
multiplexed communication network is
made
by
dedicated
communication
converters (CSC186). They have a
fiber-optic interface with 1310 nm and 2 FC
connectors to the protection IED. The
converter can be set to support an
electrical G703-64 kbit/s or G703-E1
2Mbit/s interface, according the require-
-ment of the multiplexed communication
network.
o
e
Communication
converter
Communication
converter
Digital
communication
network
G703.5(E1: 2048kbit/s)
G703.1(64kbit/s)
IED
IED
Overhead Line or Cable
e
o
Figure 18 Single Channel, communication through digital communication network