ABB Relion 620 Series - Fiber Optic Communication Link

14.15 Fiber optic communication link
Table 1099: Fiber optic communication link
Connector Fiber type Wave length Typical max.
length
1
Permitted path
attenuation
2
LC MM 62.5/125 or
50/125 μm glass
fiber core
1300 nm 2 km <8 dB
ST MM 62.5/125 or
50/125 μm glass
fiber core
820...900 nm 1 km <11 dB
1
Maximum length depends on the cable attenuation and quality, the amount of splices and
connectors in the path.
2
Maximum allowed attenuation caused by connectors and cable together
Technical data 1MRS757644 H
1206 620 series
Technical Manual