Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • Replies 13 replies
  • Subscribers 33 subscribers
  • Views 782 views
  • Users 0 members are here
Options
You may also be interested in

SWA with a shroud of mystery

Sergio Fernandez

My understanding is/was that when using an SWA it needs to have a gland on each end for the armoured steel.  Normally/ideally the gland should enter the enclosure from the underside and it would normally have a shroud over the top.  If you take the standard BW or CW (other brands and types are available like Storm Glands).  

While having a discussion recently with a friend who deals with ATEX a lot he said that the shroud would be better not being fitted in a lot of situations.  Take for example a gland that is outside your dwelling where it is exposed to the elements the shroud can get condensation inside and not have a means for draining.  The gland itself is normally OK as mainly made from brass but the Amour of the SWA can start to corrode.  This can also happen is some production environment where there is moisture in the air.

I wonder what thoughts people have about this concept of no shroud for an SWA?

As always please be polite and respectful in this purely academic debate.


Come on everybody lets help inspire the future.

Parents

  • Sometimes the shroud is wanted to prevent contact with the brass gland (e.g. TN cable into an TT outbuilding). I agree though that the whole box, gland and shroud arrangement isn't always ideal though (too many dissimilar metals for one thing). Maybe the gland could be filled with waterproof gel (wiska box style). Or perhaps a completely different approach - e.g. use copper rather than galvanised steel for the armour, then just pig-tail it into a suitable terminal - DNO concentric cable style (but with a separate core for N of course) - with just a simple stuffing gland if needed to seal between the cable sheath and enclosure.

       - Andy.

Reply

  • Sometimes the shroud is wanted to prevent contact with the brass gland (e.g. TN cable into an TT outbuilding). I agree though that the whole box, gland and shroud arrangement isn't always ideal though (too many dissimilar metals for one thing). Maybe the gland could be filled with waterproof gel (wiska box style). Or perhaps a completely different approach - e.g. use copper rather than galvanised steel for the armour, then just pig-tail it into a suitable terminal - DNO concentric cable style (but with a separate core for N of course) - with just a simple stuffing gland if needed to seal between the cable sheath and enclosure.

       - Andy.

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines