Eddy

[cliffed]

Just found this on another forum… no comments on the actual pic…this can’t be right can it?

 

[Petej999]

Just found this on another forum… no comments on the actual pic…this can’t be right can it?

In what way can't it be right Mate

 

[James]

Taking the single cores through separate holes like that is a big no, no.
assuming of course that the base of the enclosure is steel and that no other provisions have been made to prevent eddy currents.

 

[Petej999]

Taking the single cores through separate holes like that is a big no, no.
assuming of course that the base of the enclosure is steel and that no other provisions have been made to prevent eddy currents.

Agree with you ,but we have no other information, just a picture of an isolator with singles entering at the bottom.
Is the base plate ferrous? if so has it been slotted in line with best practice? for all we know the cable eateries may have been made in an insulating material, no info on that from the poster

 

[cliffed]

No one commented on it …to me it don’t look right…obviously the entries into the isolator..definitely metal enclosure.

 

[SJD]

Would be interesting to see what the removable bottom entry plate looks like:

 

[Petej999]

No one commented on it …to me it don’t look right…obviously the entries into the isolator..definitely metal enclosure.

No problem if it's a metal enclosure, it's the entry plate that causes problems with eddy currents

 

[littlespark]

Question is.... what are you doing on another forum?
Traitor!

?

 

[UNG]

Just found this on another forum… no comments on the actual pic…this can’t be right can it?

Well I can't see where the metal enclosure is earthed??

But without a picture of the entry plate it is hard to tell whether the tails have been correctly installed to prevent eddy currents

 

[Petej999]

Well I can't see where the metal enclosure is earthed??

But without a picture of the entry plate it is hard to tell whether the tails have been correctly installed to prevent eddy currents

Copper sheath of the MICC????

 

[Lucien Nunes]

Agree that it's impossible to tell whether it's OK or not. If there is a slot between the holes or the plate is non-ferrous, it's fine. If not, it's not, although currents of this order (63A) through unconnected holes in a mild steel gland plate do not usually cause any significant issues in practice.

 

[UNG]

Copper sheath of the MICC????

Where is the MICC you speak of!!!

 

[Petej999]

Where is the MICC you speak of!!!

The 4 cables entering the all metal enclosure! at the lower elevation.

 

[Petej999]

Edit my last after a better look the cables are tails PVC/PVC Singles, sorry for confusion

 

[UNG]

Edit my last after a better look the cables are tails PVC/PVC Singles, sorry for confusion

So where is the enclosure earthed!!