ABB Relion 670 Series Product Manual page 99

Line differential protection RED670 2.0
Product version: 2.0
Remote communication
Table 120. Line data communication module
Characteristic
Type of LDCM
Type of fiber
Peak Emission Wave length
Nominal
Maximum
Minimum
Optical budget
Graded-index multimode 62.5/125 mm,
Graded-index multimode 50/125 mm
Optical connector
Protocol
Data transmission
Transmission rate / Data rate
Clock source
*) depending on optical budget calculation
**) C37.94 originally defined just for multimode; using same header, configuration and data format as C37.94
ABB
Range or value
Short range (SR) Medium range (MR)
Graded-index Singlemode 9/125 µm
multimode
62.5/125 µm
820 nm 1310 nm
865 nm 1330 nm
792 nm 1290 nm
13 dB (typical 22 dB (typical
distance about 3 distance 80 km/50
km/2 mile *) mile *)
9 dB (typical
distance about 2
km/1 mile *)
Type ST Type FC/PC
C37.94 C37.94
implementation **)
Synchronous Synchronous
2 Mb/s / 64 kbit/s 2 Mb/s / 64 kbit/s
Internal or derived Internal or derived
from received from received signal
signal
1MRK505310-BEN C
Long range (LR)
Singlemode 9/125 µm
1550 nm
1580 nm
1520 nm
26 dB (typical distance 110 km/68
mile *)
Type FC/PC
C37.94 implementation **)
Synchronous
2 Mb/s / 64 kbit/s
Internal or derived from received
signal
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