Section 5
Communication set-up
5.1
Communication alternatives
GUID-B9F54D92-2D9A-4EA6-A88B-BDA333C0B0C0 v1
C37.94 communication module
Possibility for redundant channels
Fibre-optic module for dedicated single mode fibers
C37.94 direct to PCM/MUX
External G.703 converter
Galvanic X.21 interface
CB3
CB2
CB1
CB3
CB2
CB1
No external summation
Fibre-optics
IEC07000236-2-en.vsdx
IED
Two local analogue inputs for line differential protection
Additional local inputs for complementary protection
IEC07000236 V2 EN-US
Figure 57: Communication alternatives
5.2
Communication channels
GUID-411F61DD-AB7D-439C-8124-09D7C3800DCE v1
Each line differential protection IED can be configured with up to four remote communication
channels. Communication configuration is set individually for each channel.
Application examples
I
d
>
I
d
>
IEC07000146-1-en.vsdx
IEC07000146 V1 EN-US
Figure 58: Two-ended line with 1½ breaker
1MRK 505 382-UEN E
Section 5
Communication set-up
Communication set-up, 670/650 series
61
Application Guide
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Summary of Contents for Relion 670 series
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