Why do High Voltage Ceramic Insulators have Discs? | An In-Depth Exploration

[@momchilandonov]

Electrical engineer here. No need to watch the video - discs offer the best cost-effective way of insulating, as they are very good at separating water droplets from forming a path for electricity and this is of course the main concern since oxygen is a very good insulator. My diploma was also about measuring the parameters of ceramic insulators.

[@233kosta]

8 minutes saved and not even too far from my initial guess 😅 Thank you, Sir!

[@MuhChicken]

I did not know for sure, but being a former electronics technician I was thinking it was to prevent water from creating a path of least resistance. Thanks for your comment!

[@stevebabiak6997]

The other thing is that this configuration creates a longer surface that would have to be traversed by any electrical breakdown AKA flashover.

[@TheTomBevis]

@@stevebabiak6997 That was my understanding. Electrical charges tend to cling to surfaces, so larger surfaces will have greater resistance to breakdown.

[@janami-dharmam]

not only water, dust and other deposits must not provide a straight path

[@mellissadalby1402]

They are a stack of discs instead of a smooth straight ceramic pole because it effectively increases the surface area and effective distance between the two ends. Electrical flash over follows the surface, so a 1 foot long disc insulator provides the equivalent of a 5 foot separation

[@TomNimitz]

3:01 "The disk-shaped insulators distribute these mechanical stresses evenly along the length of the insulator string"? I don't think so. Like links in a chain, each disk must individually be capable of bearing the entire mechanical load. 5:28 - "Ceramics have excellent thermal conductivity which helps in dissipating the heat generated by electrical currents"? I doubt that. The widely separated points of contact would have negligible heat dissipation abilities on the electrical wires. Where are you getting this information?

[@YodaWhat]

Indeed, and the information presented was superficial at best.

[@earthwormscrawl]

In addition, ceramics do NOT have a high thermal conductivity. They have a high thermal resistance. That's why ceramics make excellent thermal barriers such as the walls of a kiln.

[@Bob_M55]

AM Broadcast towers utilize ceramic insulators at the base of the tower. The whole tower is energized with RF energy, where the insulator keeps it from contacting ground potential. Their appearance is different than what is utilized on high voltage electric transmission lines.

[@squeaksvids5886]

I’m pretty sure the porcelain insulators came long before glass ones. I’ve seen old film of them making porcelain insulators in the 1920s.

[@coffeeisgood102]

Now I understand the reason for the disks. Makes so much sense. Don’t know why I didn’t think of it myself.

[@Jack-he8jv]

if you understood this then i have a book about "becoming a millionaire from zero" to sell you, by the way the price after discount is tree fifty.

[@MannyEspinola-q4t]

Thank you for this video

[@Baruch-Hashem]

I enjoyed the 8 minutes of something I already know, but still seeing them manufactured is fun. You should create a series "How Its Made" LOL !

[@TriPham-j3b]

Sound signature... If set of disc seperate by invreasing distance and size so it echo sound wave increaseing frequency according to (target distance over speed of sound) can ambilify sound to target

[@AriBenDavid]

Today, glass is the choice in suspension; 70 year life exceeds that of porcelain at 40 years.

[@stephenalexander6721]

Although the ones you're showing when you're saying ceramic insulators are actually glass.

[@janami-dharmam]

ceramic insulators are practically out there days; most high tension lines use glass insulators.

[@fishbones2]

The number of insulator cups is a rough way to estimate the voltage being carried by the conductors. Longer insulators equals higher voltage.

[@johnmartin3517]

I saw mostly glass insulators being used on the towers.

[@canowyrms]

This has some real How It's Made vibes. Unbelievable you're at

[@historyofsimplethings]

Thank you very much. We hope that too :)

[@janami-dharmam]

more commonly called cup and saucer insulators. Glass insulators are slowly replacing the ceramic ones because of their better and more predictable characteristics.

[@YawnGod]

What a fun channel.

[@joshjones3408]

Sounds like the guy that was on how it's made..on tv....

[@Baruch-Hashem]

100% Correct!

[@IMMUSLIM1000]

To increase creepage area

[@godfreypoon5148]

Creepage distance

[@starprof]

Narration said something about using ultrasonics to clean surface of insulators. I really doubt that is ever done.

[@andrewgjennings]

etd.cput.ac.za/bitstream/20.500.11838/3115/1/Ramos_Toriq_207022917.pdf

[@andrewgjennings]

icrepq.com/icrepq06/256-hernanz.pdf (see p129 bottom left; or search for ultrasonic)

[@OzFrog48Z]

I always thought the disc design was to prevent rodents from climbing up and chewing on the wires.

[@r.robbie7918]

The exaggerated speaking narrator might exite 8 year old children but after 30 seconds I was so annoyed that quit watching.

[@georgen9755]

Porcelain

[@stevenholquin2127]

Am Not a Electrical Engineer Yet The Disc Shape of The Insulators Is Specifically Designed To Defuse The Electrical Field…. The High Voltage Does Not Travel Through The Electrical Cable The High Voltage Travels Around The Electrical Cable Which Creates a Electrical Field So When The Cable Is Held Up By a Tower The Insulator Defuses The Electrical Field at That The Junction Point You Don’t See This Yet You Hear It If You Stud Under a High Voltage Tower on a Foggy Day You Hear The Insulators Working or a Hum This Hum Is at 60 Cycles or 60Hz and This Hum Is More Pronounced By The Insulators Because The Disc Shape is Designed To Defuse The Electrical Field at Those Junction Points….. Other Wise You Have Two or Three Electrical Fields Crossing Over Each Other and We Don’t Want That Remember The High Voltage Travels Around The Cable Not Through The Cable and So That’s Why The Electrical Field Must Be Defused or Broken Up at The Junction Points Remember Am Not a Electrical Engineer

[@georgen9755]

Petti coats

[@ocsrc]

Those ceramic discs are there as hand and foot holds for the METH " scrappers " to get that sweet sweet METH " scrap metal " that the power company just left hanging out there in the wild for them to claim to get their fix each day

[@davidfalconer8913]

Yes of course , we ( engineers ) know about this .... but ..... the ( secret ? ) reason is that the ceramic industrial pottery folk do this to show off their skills ( a simple smooth tube would look SO BORING ) .. Ha - Ha ......... DAVE™🛑

[@Arihant-xo5wj]

pls be vegan animals also have lifes Radhe Radhe

[@janami-dharmam]

plants do not have life?

[@justin8894]

Flying saucers.

[@bussi7859]

They had a lot of those tea saucers leftovers and used the . Get a brain