GE MiCOM P40 Technical Manual page 514

Chapter 19 - Fibre Teleprotection
1300 nm multi-mode
1300 nm multi-mode
1300 nm single-mode
1300 nm single-mode
1550 nm single-mode
1550 nm single-mode
850 nm
850 nm
850 nm
1300 nm multi-mode
1300 nm single-mode
1550 nm single-mode
3.1.6.1 DIRECT CONNECTION
If you are using direct fibre connections you need to set the Scheme Setup settings and you are advised to change
the Address setting from the default. You find these settings in the PROT COMMS/IM64 columns. You should not
need to use any of the other settings that would be applicable if using shared links and/or interfacing units.
3.1.6.2 INDIRECT CONNECTION
For 850nm communications links where the connection is not direct fibre, a number of options are available to
interface with standard telecommunications equipment. These are:
Fibre connection to telecommunications equipment supporting the IEEE C37.94 interface
●
● Connection to G.703, V.35 or X.21 electrical circuits using auxiliary P59x interface units
P59x interface unit options are:
P591 - Fiber optic to electrical signal G.703 (co-directional) 64 Kbit/s or 2Mbit/s, depending on ordering
●
option
P592 - Fiber optic to electrical signal V.35
●
● P593 - Fiber optic to electrical signal X.21
P59x interface units are housed in 10TE wide, 4U high cases. They provide optical-electrical conversion. The optical
characteristics match those of the 850nm interface on the protection device. When used, you need one unit for
each transmitter/receiver pair. That means one unit at each end of each communications channel as
demonstrated in the figure below.
482
Ch 1
Not fitted
1300 nm multi-mode
Not fitted
1300 nm single-mode
Not fitted
1550 nm single-mode
1300 nm multi-mode
1300 nm single-mode
1550 nm single-mode
850 nm
850 nm
850 nm
P446SV
Ch2
P446SV-TM-EN-1