Siemens Sinamics G110M Operating Instructions Manual page 68

Installation
4.3 Electrical Installation
The ground connections
components. They are made with standard, heavy-power PE conductors without special
high-frequency properties and ensure low frequency equipotential bonding as well as
protection against injury.
The line supply cable of the converter can be unshielded. The converter has to be grounded
by this cable.
The converter enclosure provides high-frequency equipotential bonding between the
converter and the motor.
The connection provides solid bonding for high-frequency currents between the metal body
of the converter and the unpainted metal mounting frame. This connection should be made
with short, finely stranded, braided copper wires.
Additional measures
Finely stranded, braided copper cables have to be routed in parallel with the cable shields in
the following cases:
● Old installations with already existing unscreened cables
● Cables with poor high-frequency properties
● Installations with bad grounding systems
The connections in the following figure provide a solid, high-frequency bonding between the
driven machine and the converter.
Figure 4-10
68
①
represent the conventional grounding system for the drive
Additional high-frequency bonding of the drive system
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 09/2017, FW V4.7.9, A5E31298649B AH