ABB RELION 670 Series Product Manual page 94

Bay control REC670 2.1 IEC
Remote communication
Table 130. Line data communication module
Characteristic
Type of LDCM
Type of fiber
Peak Emission Wave length
Nominal
Maximum
Minimum
Optical budget
Multi-mode fiber glass 62.5/125 mm
Multi-mode fiber glass 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 multi-mode; using same header, configuration and data format as C37.94
94
Range or value
Short range (SR) Medium range (MR)
Multi-mode fiber Single-mode fiber
glass 62.5/125 µm glass 9/125 µm
Multi-mode fiber
glass 50/125 µm
820 nm 1310 nm
865 nm 1330 nm
792 nm 1290 nm
18.8 dB (typical 26.8 dB (typical
distance about 3 distance 80 km/50
km/2 mile *) mile *)
11.5 dB (typical
distance about 2
km/1 mile *)
Type ST Type FC/PC
C37.94 C37.94
implementation **)
Synchronous Synchronous
64 kbit/s 64 kbit/s
Internal or derived Internal or derived
from received from received
signal signal
1MRK 511 361-BEN D
M12756-1 v12
Long range (LR)
Single-mode fiber
glass 9/125 µm
1550 nm
1580 nm
1520 nm
28.7 dB (typical
distance 120 km/68
mile *)
Type FC/PC
C37.94
implementation **)
Synchronous
64 kbit/s
Internal or derived
from received signal
ABB