Anyone do thermal imaging ?

[Larnacaman]

A bit rough is an understatement from what i can see!! ...lol!!! Can you see/tell if that L2 bar has a double set in the bar to the link as the other 2 phases, or is it coming down straightish, similar to the neutral bar??

Have no idea what those hot spots are. Only ever seen something like that once before, and that was partially drilled holes on a bus bar fabrication that were a mistake. But i can't see if that's the case here. Plus, they didn't shine up anything like those hot spots in these TI pictures. So i really don't know!!!!

 

[green-hornet]

Just to throw my take on it and this is only an educated guess as I know nothing about the details of imaging. The hot spot "dots" that may be throwing you Larnicaman could be rivet points, well known to cause some heat if not tight fitting.

 

[Larnacaman]

Hmmmm, Seems that the colour yellow exaggerates the hotter areas and can also show up on the imagery as a hot spot, but without obviously without any temperature rise showing. ....never noticed that before!!

The bus bars don't look so rough in the last pict' either. But the red bar is out of alignment on the links....

Is that heat-shrink on the red and blue bus bars?? doesn't seem to be any on the yellow, that looks as if is been coated in some form of black paint!!!

 

[Larnacaman]

It looks like black heat shrink, on the bars coming out of the top bus bar chamber.

Just looked as if there was a thickness there, where the black covering stopped, ...showing on the photograph. But it maybe from the angle the photo was taken. I wasn't sure, which is why i asked the question....

 

[Larnacaman]

Well it's fairly common in well known manufactured switchgear boards/panels that where bus-bars are accessible (like the main connection box/point etc) bus bars are protected with a heat shrink covering. On Main panels, i also like to have boots over the lug connections, Finishes a job off to my mind....

Yes, was aware of the slotted paxolin plates at the top of the connection box.

By the way, what size are those feeders cables from the DNO, from the photo, they look quite hefty?? ...lol!!!

 

[Sidewinder]

So Conoeboy,

No fault found then?

However, do you have an explanation for the elevated temperature "shown" by the sleeving on the Y phase insulated link with the yellow spot on it please?

I can't think of one even though the optical image gives loads away!

 

[Sidewinder]

I would have expected the black heat shrink should act as a black body radiator well almost, same as the insulation tape on the pipes as you suggest, again almost.

It is a bit odd that the sleeving has behaved like that. As you say could be a different material?

One of the reasons for my request of the optical image early on, in fact in my 1st post! Was exactly as you say the real optical visible light image can tell so many tales!. Without seeing the physical layout in "real" light then the IR image can be very misleading.