We've been here before. Actual arcs exhibit in UV spectrum, and UV sensitive
camera are used by experts in this field to find the arcing hardware. Of
course, something with an internal arc or hidden arc will be hard to see using
UV camera..
Some camera models place the UV corona image upon a visual-light image of the
scene since otherwise no image will be seen on a UV only camera, unlike what is
often seen on an IR camera.
.
From:
.
https://www.inmr.com/infrared-uv-inspection-of-overhead-lines/.
Detecting Corona on Power Lines
.
Infrared (IR) detection technology, while ideal in identifying hot spots in
electrical power systems, has limited value when it comes to detecting corona
activity. Experience shows that only advanced stages of corona can sometimes
become visible using an infrared camera..
The ideal tool to detect corona activity is a solar blind UV camera.
.
An example of what is seen with a UV overlay + visible camera combo.
https://youtu.be/OtvfQ1II_ME?t=32
Also:
.
https://ofilsystems.com/uv-inspection/
de AA5CTJm
On Friday, February 2, 2024, 12:34:43 PM GMT-6, Lee STRAHAN <k7tjr@msn.com>
wrote:
Hi Charlie and all,
John Fluke company has some new equipment that senses IR and I believe they
add ultrasonic for their new remarkable sensor capable of use with power lines.
" https://www.fluke.com/en-us/products/thermal-cameras";
A bit on the spendy side. I remember their new product announcement showing
power line use but do not recall their specific product numbers.
Searching their site.
I Found this. "
https://www.fluke.com/en-us/learn/blog/leak-detection/corona-discharge" ; It's
an ii900 from Fluke
Lee K7TJR OR.
-----Original Message-----
From: RFI <rfi-bounces+k7tjr=msn.com@contesting.com> On Behalf Of Charles Gallo
Sent: Friday, February 2, 2024 7:42 AM
To: Rfi List <rfi@contesting.com>
Subject: Re: [RFI] UPDATE re: Source power pole located - but wonder which
components most likely temperature sensitive
I know HV lines are surveyed with drones in at least some locations. Usually
the company applies for a “beyond visual line of sight” (BVLOS) waver, and they
use drones with thermal imaging and CM accuracy for location
--
73 de KG2V
Charlie
> On Feb 2, 2024, at 10:28 AM, Alan Higbie <alan.higbie@gmail.com> wrote:
>
>
> *I'M CURIOUS*:
>
> - Is there some new technology being used for surveying lines? I sort
> of recall reading something like this. Drones? SDR recording?
> - Or, maybe this is just some guy driving around with his AM radio on?
> - Is there a new version of the ultrasonic dish that is better than the
> previous Radar Engineers model?
> - What is the difference between RE models and the MFJ-5008?
>
> https://mfjen/
> terprises.com%2Fproducts%2Fmfj-5008&data=05%7C02%7C%7C416b4c251bef4ede
> d11108dc24059682%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C63842485
> 3636490497%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzI
> iLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=1y2NbTZ5VnjgayxM9A%
> 2FBNgfhX%2FYWfplde66glt%2BDRhg%3D&reserved=0
>
> I will further update when these tickets are closed out - and the
> defective component is positively identified.
>
> 73, ~ Alan K0AV
> Colorado Springs
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