ABB Relion 670 Series Product Manual page 61

Busbar protection REB670
Customized
Product version: 1.2
Remote communication
Table 68. Line data communication module
Characteristic
Type of LDCM
Type of fibre
Wave length
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 or
50/125 µm
850 nm 1310 nm
13 dB (typical 22 dB (typical
distance about 3 distance 80 km *)
km *)
9 dB (typical
distance about 2
km *)
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
1MRK505273-BEN D
Long range (LR)
Singlemode 9/125 µm
1550 nm
26 dB (typical distance 110 km *)
Type FC/PC
C37.94 implementation **)
Synchronous
2 Mb/s / 64 kbit/s
Internal or derived from received
signal
61