Belden HIRSCHMANN GRS105, Руководство пользователя, Страница: 12 / 78

12
Installation GRS105/GRS106
Release 01 11/2021
2.7 Strain relief
Note: If the strain relief is insufficient, there is a potential risk of torsion,
contact problems and creeping interruptions.

Relieve the connection points of cables and lines from mechanical stress.

Design strain reliefs in such a way that they help prevent any mechanical
damage to cables, wires or conductors caused by external influences or
their own weight.

To help prevent damage to device connections, connectors and cables,
follow the instructions for proper installation in accordance with
DIN VDE 0100-520:2013-06, sections 522.6, 522.7 and 522.13.
2.8 Shielded ground
The shielded ground wire of the twisted pairs cables is connected to the front
panel as a conductor.

Beware of possible short circuits when connecting a cable section with
conductive shield braiding.
2.9 Electrical connections
2.9.1 Grounding the device
Before supplying your device with power, always verify that the device is
grounded.
The device is grounded via 1 grounding screw. Power supply variants
characteristic value G and M are additionally grounded via the power supply
connection.
2.9.2 Requirements for connecting electrical wires
Before connecting the electrical wires, always verify that the requirements
listed are complied with.
The following requirements apply without restrictions:

The electrical wires are voltage-free.

The cables used are permitted for the temperature range of the
application case.
 Only switch on the device when the casing is closed.
 Relevant for North America:
Exclusively use 60/75 °C (140/167 °F) or 75 °C (167 °F) copper (Cu) wire.