ABB REL670 Product Manual page 114

Line distance protection REL670 2.2
Product version: 2.2
Remote communication
Table 165. 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
114
Range or value
Short range (SR)
Graded-index multimode
62.5/125 µm
Graded-index multimode 50/125
µm
820 nm
865 nm
792 nm
13 dB (typical distance about 3
km/2 mile *)
9 dB (typical distance about 2
km/1 mile *)
Type ST
C37.94
Synchronous
2 Mbit/s / 64 kbit/s
Internal or derived from received
signal
Medium range (MR)
Singlemode 9/125 µm
1310 nm
1330 nm
1290 nm
22 dB (typical distance 80 km/50
mile *)
Type FC/PC
C37.94 implementation **)
Synchronous
2 Mbit/s / 64 kbit/s
Internal or derived from received
signal
1MRK 506 372-BEN -
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 Mbit/s / 64 kbit/s
Internal or derived from received
signal
ABB