Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC, 7SC805, Manual
C53000-G1140-C380-1, Release date 05.2014
78
3.1.2.3
Process Terminal Connections
Fixing Elements
The process terminals feature integrated fixing elements. The head shape of the terminal screw allows for using
a simple flat screwdriver (4.0 x 0.8).
Stop Elements and Cable Cross-sections
Figure 3-5
16-pin process terminal (cabinet surface mounting)
Use the suitable terminals, depending on the type of installation - cabinet flush mounting or cabinet surface
mounting. Compared to cabinet surface mounting, the terminal can be mounted rotated by 180° giving easier
access to the terminal screws. The ordering data is specified in Appendix A1.
Solid conductors as well as stranded conductors with or without conductor sleeves can be used as single
cables. Siemens recommends using twin cable end sleeves when connecting two single cables.
Mechanical Requirements
The fixing elements and the connected components are designed for the following mechanical requirements:
Cable cross-sections:
AWG 26-12 (0.2 mm
2
to 2.5 mm
2
)
Permissible voltages:
300 V
Permissible currents:
5 A
Use copper conductors only!
Permissible tightening torque at the terminal screw
0.4 Nm to 0.5 Nm
Stripping length
7 mm