Hi all,

I just take a picture of our distribution line at our site and i found a lot of "hot spot" at the lighting pole,

I sugest that it just a refection from the sun because the cut out fuse materials are made from stainless steel and i can not found any "thermal gradien" on the insulator that have hi emmisivity, i need second opinion on this

regards

sofan afandi

electrical technician

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Sofan Afandi
Electrical Technician

In my opinion those are hot..you can see the gradient on the hot area if you look closely.

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Rory Paul
Independent Level II Thermographer
Barak Systems
www.baraksystems.com

Sofan,

 Without seeing a visual of the disconnects, it is difficult to know. I've never seen stainless steel disconnects but have often seen copper or aluminum alloy components. Both these can be quite reflective, of course, but it is unusual to see them ALL this uniformly reflective. It would also be useful to know what your level and span settings were as I too am surprised to not see more of a thermal signature on the fuse bodies. 

I would suggest, if it is important, that you re-shoot the image from a different angle or when the sun is less influential. I think you will find this is not reflection but that is ONLY my "best guess" at this point in time with this limited information. 

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Thermally Yours,

John
ASNT NDT Level III #48166
The Snell Group
www.thesnellgroup.com
www.thermalsolutions.org
800-636-9820

It appears that all top clips are hot and hinge assembly on left & center are hot.  The hinge on the bottom of the right cutout appears to be cooler than others

At first glance i would have to say they are hot too inconsistent and countours for reflection especially from a single source such as the sun. Second thought was a load issue I generally see this when components over loaded (80% of rating or higher) which increases the potential for resisance related anomalies BUT one fuse end is not hot and if properly sized the wires will likely be hot as well. If this is the first time they have been looked at they could very well be hot, if between inspections this was discovered have these fuses been opened and closed recently I see this alot not pushed back in well.

 Nice image, well focused if you could change your temperature levels to get rid of the white you will likely see more detail and make associations with the components looking for resistance related potentials.

Hope this helps or may give you a few more ways to look at it.

 Craig Casler

     Here is an example of all hot components with overloading. These components are rated for 300 amps but are currently drawing 324.  As the current increases so does your potential for resistance related anomalies. I am not suggesting your components are over amperage just not likely to be a reflection problem.

 Craig