In the previous article "Accessories for connecting flameproof motors" we analyzed the choice of fittings suitable for connecting flameproof motors with Ex-db connection box.
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In practice, installers on construction sites often have to seal barrier cable glands or to cast the sealing fittings in narrow places. Cables, which are often armored and have limited bending ability, add further difficulty to the installation.
Manufacturers therefore have flameproof electric motors with increased safety connection box in their catalog's which facilitate the connection of this equipment to the power line. Then there are the increased safety motors which, as would be logically expected, have the connection box made with the same type of protection.
In this article, we will delve into the connection of 'Ex db' and 'Ex eb' electric motors with 'Ex eb' junction boxes to the power line with regards to the use of electrical connection accessories, i.e. adapters, sealing fittings, cable glands and flexible tubes.
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In this regard we will give some examples of system applications, remembering that the choice of these accessories, as well as for cables, is the responsibility and responsibility of the designer who must scrupulously apply what is foreseen by the applicable IEC/EN -14. [1]
Table 6
1) The EN ISO -36 and -37 standards form in addition to the EN IEC series of standards a holistics set of technical standards for the development, testing and certification of explosion-proof-non-electrical equipment.
2) The standard of electrical devices is also applied to non-electrical devices.
+ means: possible to apply
- means: NOT possible to apply.
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