Videotec MAXIMUS MHXT - Manual (Page 21)

Instruc
tions manual - English - EN
21
7.3.2 Cable entry
To prevent the passage of flames or explosions from
the unit to the conduit system or cable gland to the
external environment, use connection in conformity
with IEC/EN60079-14.
All cable glands shall be ATEX/IECEx certified, as
appropriate, in type of explosion protection “d” and/
or "tb", rated IP66/67, suitable for the conditions of
use and correctly installed.
When conduit is used, a suitable ATEX/IECEx certified
stopping box shall be used, as appropriate, in type
of explosion protection “d” and/or "tb", rated IP66/67,
suitable for the conditions of use and correctly
installed. The stopping box must be fitted within
25mm (1in) from the enclosure wall.
Unused cable entries are to be closed off using
closing devices ATEX/IECEx certified, as appropriate,
in type of explosion protectio n “d” and/or "tb",
rated IP66/67, suitable for the conditions of use and
correctly installed.
When the threaded connection or the size of the
hole are different to those of the gland, an ATEX/
IECEx certified threaded adapter shall be used, as
appropriate, in type of explosion protection “d” and/
or "tb", rated IP66/67, suitable for the conditions of
use and correctly installed.
7.3.3 Connection of the power supply
line
Electrical connections must be performed
with the power supply disconnected and
the circuit-breaker open.
When commencing installation make sure
that the specifications for the power supply
for the installation correspond with those
required by the device.
Make sure that the power source and
connecting cables are suitable for the
power consumption of the system.
The electrical system to which the unit is
connected must be equipped with a 15A
max. bipolar protection switch. This switch
must be of the Listed type. The minimum
distance between the contacts must be
3mm (0.1in). The circuit breaker must be
provided with protection against the fault
current towards the ground (differential)
and the overcurrent (magnetothermal).
The device is available in versions for different power
supply voltages: the value for the particular device is
shown on its identification label.