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mission time. This also enables the transmission of a large amount of additional information on differential
protection routes and the remote control of devices at the remote end with DIGSI 5.
The distance to be bridged and the transmission paths available determine the settings of the protection inter-
face. External communication converters are used for the connection to communication networks via
G703.1-, X21-, or G703.6 interfaces. The connection to 2-wire copper cores also takes place via a communica-
tion converter. The C37.94 interface, for example, with 2 MBit/s, offers a direct fiber-optic connection to a
multiplexer with the corresponding interface.
Table 3-10
to
Table 3-11
In the case of a direct connection, the transmission distance depends on the fiber type of the optical fiber. This
distance can also be extended via external repeaters.
The modules in the device can be replaced from outside, so that adaptation to a transmission route is possible.
In the case of the 820-nm double module USART-AE-2FO with 2 channels, 2 protection interfaces can be oper-
ated on one module.
The modules can be located at slots E and F in the base device, and at slots N and P in the plug-in module
assembly with integrated power supply.
When using communication converters, the connection from the device to the communication converter by a
module is established via optical fibers.
Table 3-10
Plug-In Modules
Physical Connection
1 x optical serial, 1300 nm, duplex LC plug, 24 km via
9/125 μm singlemode optical fibers, 4 km via
62.5/125 μm multimode optical fibers
2 x optical serial, 1300 nm, duplex LC plug, 24 km via
9/125 μm singlemode optical fibers, 4 km via
62.5/125 μm multimode optical fibers
1 x optical serial, 1300 nm, duplex LC plug, 60 km via
9/125 μm singlemode optical fibers
2 x optical serial, 1300 nm, duplex LC plug, 60 km via
9/125 μm singlemode optical fibers
1 x optical serial, 1550 nm, duplex LC plug, 100 km
via 9/125 μm singlemode optical fibers
2 x optical serial, 1550 nm, duplex LC plug, 100 km
via 9/125 μm singlemode optical fibers
1 x optical serial, bi-directional via 1 optical fiber,
1300/1550 nm (Tx/Rx), simplex plug LC, 40 km via
9/125 μm singlemode optical fiber
4
USART-AH-1LDFO only pairs with USART-AJ-1LDFO or USART-AY-2LDFO on the opposite side
5
USART-AJ-1LDFO only pairs with USART-AH-1LDFO or USART-AX-2LDFO on the opposite side
6
USART-AX-2LDFO only pairs with USART-AJ-1LDFO or USART-AY-2LDFO on the opposite side
7
USART-AY-2LDFO only pairs with USART-AH-1LDFO or USART-AX-2LDFO on the opposite side
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
show examples of communication connections.
Plug-In Modules for Applications with the Protection Interface
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System Functions
3.5 Protection Communication
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115
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