Manual 7XV5655-0BB00
SIEMENS AG
Page 17 of 79
C53000-G1176-C175-3
Connecting the Device
This describes the connection of all data and power supply lines that are necessary for
safe operation.
In the case of electrical installation, follow the rules governing mounting of power
current equipment.
Warning
Always use wire end ferrules for stranded conductors.
Warning
Never look into fibre-optic waveguide elements or the ends of the
fibres.
Please observe the permissible bending radii of the optical fibre waveguide
(manufacturer data).
Bending cables to a smaller radius than the minimum bending radius can destroy the
FO fibres.
Auxiliary Power Connection
The contacts for the operating voltage are established via the terminals on top of the
device. For the assignment of terminals please refer to the relevant sections of this
manual..
The supply voltage of the device must be protected with an external disconnection
device including a fuse and identified as such. The fuse selected must be suitable for
the cross-section of the connection wires or for the cubicle wiring. (For the fuse value,
see the Technical Data.)
Screw terminal connection
Minimum cross-section of the
wires for auxiliary voltage and
earth (ground)
Nominal conductor cross-section
Tightening torque
Solid or stranded conductors with wire end ferrules
for conductor cross-sections 0.25 mm
2
to 2.5 mm
2.
The dielectric strength of the connecting wires must
be at least 300 V AC.
Stripping length:
up to 8 mm
1.5 mm
2
2.5 mm² , rigid conductor or with wire end ferrule
0.5 Nm
