Installation
Incorrect installation!
Risk of severe injuries.
Please observe the thread sizes for the cable glands specified in the
equipment documentation.
The connecting cable should comply with relevant regulations and have
the required cross-section. The diameter must be identical to the data on
the cable entry.
Ensure that the maximum permissible conductor temperatures are not
exceeded by suitable selection of cables and means of running them.
The permissible ambient temperature around the intrinsically safe units
and components must not be exceeded.
When stripping insulation, it must be ensured that the conductor insulation
reaches right up to the terminals.
The conductor itself must not be damaged when removing the insulation.
The switching device combination must only be installed in a dry and clean
environment.
Terminals
Tighten the screws of the connection terminals in accordance with the specified
tightening torques.
Screw dimensions
Tightening torque
[Nm]
Protective earth conductor
1
The protective earth conductor must always be connected to the enclosure using a
cable lug (2). Place a washer (1) above and below the cable lug and secure the screw
(4) using a locking device (3).
Regardless of the operating voltage, connect all bare, non-energised metal parts to the
protective system.
The external protective earth conductor is designed to be fitted with a cable lug. The
cable must be run and fixed near to the enclosure to prevent movement of the cable.
12
Light-metal Ex d enclosures /
flameproof enclosure 8265
M 3
0.8
2
1
3
4
WARNING
M 4
M 5
2.0
3.5
M 6
M 8
5.0
10.0
143457 / 826560300010
S-BA-8265-01-en-27/01/2009
M 10
17.0
05592E00