Published On: Mon, Feb 24th, 2020

Periodic overview of distribution, electric equipment and electrical installations using thermovision camera

Text: Radoje Janković. 
Photos thanks to colleagues: Milisav Kanjevac & Boban Duncevic

When your doctor suspects a serious illness with you, he sends you to a scanner, which will scan in detail the smaller or greater part of your body.

Now, when your electrical installations, electrical equipment, distribution boxes and even your sockets to which you have connected consumers, comes BUUMMM … FLAMMABLE TRENDS TO THE DOOR OR THROUGH THE DOOR OF THE ORMAN, or with a switch, fuse, relay, clamps of the appliances, on regular clamping styles, with dumbbells, contacts … If this is the reason that you, as a “DOKTOR”, have not timely paid attention to these more or more “PATIENTS” electrical devices, many of which work 24 hours a day, or 365 days a year without interruption. And, NATURALLY, they also wanted to “operate” with your guilt, as you would blame your doctor who did not send you to the scanner to scan you a little. Many of you have seen this in practice, and some are well “OPEN” (you know what I mean by this term).

You are very proud of having very expensive and quality instruments and competing with each other who will have a better and “smarter” instrument. And you’ve forgotten a very important instrument that’s not very expensive, and it can greatly ease your work and prevent headaches …

Namely, these are thermovision cameras that can show you every “disease” of your electrical devices, installations, cabinets, electrical equipment, all kinds of all kinds. They are not too expensive, but they are very, very useful and make it easy for you to solve mild doubts and problems in removing failures and identifying the causes that led to that “BUUMMMM …”

They are not very expensive for the needs of the electrical profession and they are very useful. Prices range from 300,00 Euros upwards.

Here are the data I downloaded from the Internet, so that I would not be much frustrated with the theory, for one of about 300+ euros what can it do and what it serves:

“Thermal imager, Thermal camera, thermographic camera, thermal image camera, infrared camera, infrared thermal imager, thermal imaging camera 
HT-02 from -20C to + 300C

# A thermovision camera is for watching the heat – simply put it. 
# The application is multiple, from checking the technical correctness of electrical installations and fault defects on electronic devices, through control of the insulation / thermal conductivity of the building, up to the hunting. 
# Any purpose where it is necessary with high precision and graphically capture the thermal image of the object / object / area. 
# Use a combined view (adjusts the ratio), thermal and classic images for easier orientation. 
# 2.4` Color LCD Display 
# Menu to select the right display parameters depending on what’s being watched 
# Images are stored in the microSD card in BMP format (goes along with the device). “

I attached the practical application of this instrument to electro maintenance and to prevent the formation of heavy defects and disasters with disabilities or material damage, as well as heavy and expensive costs, and rarely with tragic consequences for people.

Thanks to my colleague, I gave examples of two photographs, the first photo is the look of one or a group of electro parts to be targeted (suspected or visually, and by the touch seeing something is wrong) to be checked and the other figure shows that element or a group of elements that are “sick” and will soon come to eg. melting of plastic, combustion of PVC insulation, heating and intake of connecting elements (clamps, screws …), breakdown of insulation, and at the end of fire and fire …

From a thermionic image you can see all the “bumps” of the particular or group of elements that you as a “doctor” should prevent. It is also clear that heat is expanding to all surrounding electrical elements more or less sensitive to high temperatures, (subsequently digital and electronic). This heat and how it affects the operation of the electrical element near the “sick”.

The temperature in the left corner is the ambient temperature, and on the right side is the target temperature scale that is measured and clearly visible to the teal see the temperature field of one or more expandable elec- tric elements and negatively affects the elements nearby, especially the sensitive elements and components that often can lead to malfunction and failure of the entire device or plant or any drive.

Therefore, it is necessary to pay very high attention to maintenance and especially to perform good preventive maintenance, which is why it is so called, to prevent damage, breakdowns, disasters and serious consequences …

I think that for now I have enough practical and clear explanation for you, and in more detail theoretically I will speak in another article on this type of measurements in the electrical profession.

Fig. 1.a. View of a board…

Fig. 1.b. … view of board with camera

Fig. 2.a. …

Fig. 2.b. … same board under camera eye.

Fig. 3.a. Circuit breaker…

Fig. 3.b. … hot spot…

Fig. 4.b. Board to be checked…

Fig. 4.b. … hot spot.

Fig. 5.a. Board to be tested…

Fig. 5.b. … hot spots.

Fig. 6.a. Board to be tested…

Fig. 6.b. … hot spots.

Fig. 7.a. Board to be tested…

Fig. 7.b. … hot spots.

Fig. 8.a. Board to be tested…

Fig. 8.b. … hot spots.

Fig. 9.a. Transformer to be tested…

Fig. 9.b. … hot spots.

Fig. 10.a. Transformer to be tested…

Fig. 10.b. … hot spots.

Fig. 11. Photos of Boban Duncevic – first example

Fig. 12. Second example of Boban.

Fig. 13. Third example of Boban.

Fig. 14. Fourth example of my friend Boban.

About the Author

- Radoje - Rade Jankovic Electrician, Electrical Technician, Electrical Engineer, PhD, Ecologist, Environmentalist, Designer, Educator, Investigator... Today PROFESSIONAL TECHNICAL WRITER AND DOCUMENTATOR Massive practical experience in almost all fields of electrical engineering over 40 years. My International education group in Facebook: EEEW - ELECTRICAL & ELECTRONIC EDUCATION WORLD where published more than 8000 small or bigger articles, lessons, technical advice, projects, technical calculations, test questions with and without answers, illustrated test questions with and without answers; all my original works and few thousands of may original photos from practice, drawings, circuit diagrams, environmental lessons and examples from everyday practice etc., etc.

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Periodic overview of distribution, electric equipment and electrical installations using thermovision camera