Connections To Optical Communication Interfaces - Siemens siprotec 7SA6 User Manual

Hardware and Connections
2.1.4

Connections to Optical Communication Interfaces

Optical
Communication
Interfaces with
ST-connector
Connections to
Optical
Communication
Interfaces with
ST-connector
2-18
After the wires are crimped, the contacts are pressed into the terminals of the connec-
tor until they snap into place..
Note:
Stress relief for individual pin connector must be provided with cable ties. Stress relief
must also be provided for the entire set of cables, e.g., cable ties.
The following separation tool is needed to remove the contacts from the pin connec-
tors:
Type: 725840–1 from AMP Corp.
The separation tool contains a small tube that is subject to wear. The tube can be or-
dered separately:
Type: 725841–1 from AMP Corp.
The three available versions of optical communication interfaces with ST-connector
are shown in Figure 2-18. The ports are supplied with caps to protect the optical com-
ponents against dust or other contaminants. The caps can be removed by turning
them 90° to the left.
2 channel
Figure 2-18 Optical communication interfaces with protective caps
Optical connector type:
Fibre type:
Wavelength:
Allowable bending radius:
Laser class 1 (acc. EN 60825–1) is achieved with fibre type G50/125 µm and
G62.5/125 µm.
1 channel
ST–connector
Multimode graded-index ("G") optical fibre
G50/125 µm,
G62.5/125 µm,
G100/140 µm
λ = 820 nm (approximately)
For indoor cable r
min
For outdoor cable r
min
1 channel
= 5 cm (2 in)
= 20 cm (8 in)
7SA6 Manual
C53000-G1176-C133-1