Page 68 - Industrial Plants

Figure 2 : Example of
connection between
a flameproof motor
and a conduit system

transmitted to the pipes and boxes of the conduit selection criterion of the latest edition of EN 60079-14.
system, therefore the connection to the machine The main discriminant introduced by this selection
must be carried out with flexible tubes with a metal criterion is the type of cable; in fact, the solid filling
core with mechanical characteristics equivalent to material [4] between the individual conductors of a
those of rigid tubes [3]. multi-core cable must not allow the flame to pass in the
event of an explosion and, at the same time, must
deform without being crushed by the pressure action
exerted by the cable gland rubber.
Connection to a cable system When a cable is not equipped with these characteristics,
If the system to which the machine is connected has a barrier type cable gland must be used. In this device
visible cable laying, the entry into the connection box the installer, after eliminating sheaths, screens, and filler
with cable glands must be made by applying the from the cable for a section, throws a two-component

Figure 3 : Flow chart
based on the EN
60079-14:2014-03
Standard 1
1
IndustrIal Plants - May 2024
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