Although there are comments below that explain the the connection at the copper wire prior to crimping, I would have liked the video to have indicated the correct distance (if the wires don't actually make contact) within the crimp. Every other step in the procedure is explained with measurements, yet the section with the actual wire connection we're left guessing?
Crimp tubes (at least for consumer wiring) usually have an internal stop, so you can only insert the conductors so far, and the distance of naked copper usually is both printed on the packaging and stamped on the metal of the tube.
this is impressive! my mind struggles to keep the scale in mind. one second it looks like a man is working on a giant cable - then a tiny man is working on normal cable.
i think catching fire in no time is... somewhat a better fail. Imagine this line connecting a hospital and the joint is going bad slowly, starting in some months, getting better during summer and finally breaking down during horrible wheater.
If I had to guess, a good connection would have been to slightly open and push together the strands, inter-meshing them. And then crimp a tube (of the same material) over that. With (preferred) or without brazing / soldering the copper together.
@@AlexKarasev You're right. So why did he make that gap? Metals expand at higher temperatures, right? So when the cable is under load. It will be warmer and expand slightly, the gap will be very small, right? Just a guess.
Not sure why this ended up in my feed or why I watched it all the way through. The last time I really inspected electrical cabling I caught 450v for my troubles. 😅
I feel like there's some certification required to install this... can you just imagine getting to the end and finding you had unexpected parts left over?
Do the two copper conductors actually make contact? In your example it looks like they do not, and all the current has to pass through the connecting pipe, which must have massively reduced capacity?
Obviously this is a professional and certified product so what’s the chance it can’t carry the necessary current after the splice? You armchair experts are so annoying.
If you had done the math first, you would have noticed that 1. Yes, the resistance at the joint is higher than the resistance of the wire and 2. its is negligible. Wires are NEVER oberated at their physical limit. They are operated at currents where "gets warm but you won't burn your fingers" is the basic idea. You may go ahead and invent a connection where the copper really connects on its full crossection, but I predict you are going to end up with mechanically complicated connections that save a few milliohms.
"Good enough, reliable and servicable in a trench on a construction site" is the name of the game. With a focus on reliable! It is not about a perfect solution that takes 10 times as long and saves 10 watts. How would you do different without making it very bulky? While still being as quick and reliable?
Hmm.... there seems to be something missing.... ? When the innermost tubes were crimped around the joining copper strands there was nothing forcing the copper strands towards each other. I feel like there should be total contact between the joining cables/strands? Maybe some kind of melted copper should be inserted in the tubes before / during / after crimping? The way this was done there may be a cavity between the strands?
It would require quite extreme heat to get the soldier flow properly between the copper strands, to a point where it may damage the insulation of the cable itself. Joint may have slightly higher resistance, but in terms of of the whole cable, the resistance of joint is negligible.
@@edgarasf123 Oki - I'm a self taught power engineer and small details like that cathces my eye and maybe it is no big deal like you says. But I'm off to work now. Must start early since it is difficult to get into the switching area if you are not an employee.
мне кажется электрическое соединение слабовато. получется идет провод который переходит в муфту а потом в обратно в провод. сама муфта выдержит токи которые идут по проводу? или прелесть какраз в том что токи там слабые?)
В самой муфте плюс еще сам кабель плющится и соприкасается концами. Но все же соглашусь, что соединение не выглядит надежным с такими маленькими муфтами. Хотя инженерам виднее и там все давно просчитано и протестировано)
The sound has a serious error. At about 1:30, it says leave 500 mm at each end of the inner sheath. Actually it's 50 mm. The subtitles are correct. Why does the voiceover differ?
Heat guns are used in places where a blow torch can’t be used for safety reasons like confined spaces, places with a risk of a build up of gas etc. The job takes 3x as long, and if there’s even a slight breeze you may as well forget about it and go home.
Я понимаю что качество соединительных муфт должно быть высоким,да бы зимой не долбить ковшом экскаватора землю что бы поменять стрельнувшую муфту, но все же есть некий предел. Качество / стоимость .
@@copetimusmaximus3363 что за множество смазок и подобие изолент ( возможно лента восстановления изоляции ) это все входит в комплект ? Сколько стоит такая муфта 50 тыс? Уверен не меньше.
@@Artem_38. да хоть 100 тыс., суть в том, что данные проекты делают крупные фирмы при строительстве инфраструктуры , где заказчик крупный магнат или госзаказ , а там денег, как грязи.
@@johnjackson8692 They (8-10 workers) needed 4 day's for 3 x 30kV underground cables after the existing cable blow up. (30kV at 1000A is explosive if something fails). It's not so easy outdoor in the mud if 40000 people are waiting. There are many way's to make errors with underground cables. Western Union splice are for overhead wires, NASA use solder for better security (NASA-STD-8739.3).
@@ShalomBrother The pipes are tinned copper? Makes sense. But I still don't get why the wires are not soldered before clamping them with the pipes, it doesn't seem an especially complex task considering the whole fuss and the connection would surely be better?
@@djkoti74 they just don’t need to be tinned, the crimp is sound enough. They used to Tin them before making a plumbed connection with a ferrule back in the day
@@djkoti74 you should not combine soldering with crimping. Crimping with the right tool is literally airtight. Tin creaps/flows/yield under pressure - crimping is applying pressure. So, you would force an airtight metal pack, then then tin would yield over time -> *bad idea*.
@@sarowie I'm a complete lamer on this. My intuition would say that air tightness is irrelevant because of layers of insulation and that low resistance high current flow is key here.
беда китайской проводниковой продукции, нет цветовой маркировки, соединяя рабочую линию можно перепутать фазы, вызвав на объекте перекос, и выхода из строя важного и не менее дорогостоящего оборудования. Особенно на объектах не имеющих защиты от перекоса фаз. А так, соединение вполне доступно каждому)
Why connect when you can put it in a distance up to ~3cm so the voltage will be enough to create a lightning from one end to another and so the electricity will go through?
So you don't just twist the ends together like a bread bag tie then wrap the joint with scotch tape to insulate it?
I'd love to watch you try twist those wires by hand :-)
U put scotch tape to insulate it ??
You have to, otherwise its dangerous
@@jonatday oh man i'd love to show u my wiring work
Come on man , proper engineers use duct tape
Thanks for the videos, now I can connect my new house to electrical grid DIY!
Your house?!? Hell, a small city.
Yeah that's like a whole neighborhood's power lol.
@@Jutilaje maybe he is a nvidia user?
This is such a hassle, I use those giant WAGO connectors for all my 10KV needs.
I think those are called bear traps. Lol.
@@Jutilaje if it works it works. We got those Giant mf'rs everywhere in the ground. Way quicker xD
This is useful when I need to repair the cable for my phone charger.
Cant wait to power up my RTX 4090
That seems about the right cable for the job 😆
@@bartdereu9267 yeah, but nvidia would not follow the crimping instructions
Youtuu argorithm give me funny engrish vids. Yes and thank you.
Although there are comments below that explain the the connection at the copper wire prior to crimping, I would have liked the video to have indicated the correct distance (if the wires don't actually make contact) within the crimp. Every other step in the procedure is explained with measurements, yet the section with the actual wire connection we're left guessing?
If you need to know then you would ask your CO.
@@mikelCold I tried this at home when I was putting a new plug on my refrigerator, annoying that I didn’t finish the job!
Crimp tubes (at least for consumer wiring) usually have an internal stop, so you can only insert the conductors so far, and the distance of naked copper usually is both printed on the packaging and stamped on the metal of the tube.
@@xxhellspawnedxx I was joking
this is impressive!
my mind struggles to keep the scale in mind. one second it looks like a man is working on a giant cable - then a tiny man is working on normal cable.
I feel u man
Сколько раз говорить, изолента должна быть синего цвета!
쉽게 접할 수 없는 기술인데
많은 전기 기술인들의 좋은 자료이네요
Wow, heavy duty stuff. Easy to cut corners and make mistakes, but the consequences of mistakes are scary. The join would catch fire in no time.
i think catching fire in no time is... somewhat a better fail. Imagine this line connecting a hospital and the joint is going bad slowly, starting in some months, getting better during summer and finally breaking down during horrible wheater.
Strangely fascinating!!!
tryed this in my hometown , we are now back in stoneage without electric
Very impressive process ! 👍
impressive process?
Dayummm u good at working dat shaft
the helmet with the fashion jeans 👌
Why am I watching this at 5am. I don't even do electric work.
Yeah the copper ends are supposed to meet inside the crimp tube & they clearly don't. That's, like, a key thing.
Maybe the ends don't have to meet. Maybe if they are close that's good enough.
I would have thought so too. But I don't work with such high voltages. ?huh🤷♂
@@oldi184 Oh yeah at 10KV an arc will easily cover the gap if the conductors aren't in contact :-)
If I had to guess, a good connection would have been to slightly open and push together the strands, inter-meshing them. And then crimp a tube (of the same material) over that. With (preferred) or without brazing / soldering the copper together.
@@AlexKarasev
You're right. So why did he make that gap?
Metals expand at higher temperatures, right? So when the cable is under load. It will be warmer and expand slightly, the gap will be very small, right?
Just a guess.
english was very good, i don't do this line of work and understood everything very clearly.
5:14 I really think they shouldnt have blurred that bit out, just like they do in those "other" Japanese movies available on the internet..........
I remember seeing the crimp connections made when I used to build High voltage transformers.
Good Watch. Thanks for the upload.
At least his head is protected with a super-duty hard hat
Not sure why this ended up in my feed or why I watched it all the way through. The last time I really inspected electrical cabling I caught 450v for my troubles. 😅
This is why you don't stick your dick in the electrics, my dude.
@@xxhellspawnedxx Lessons learned.
Relaxing to watch
🙇♂️
I feel like there's some certification required to install this... can you just imagine getting to the end and finding you had unexpected parts left over?
This method is a bit old school, they still teach you how to do this with basic tools, but now we have much better tools.
Super involved insulation procedure. The conductor connection seemed a bit willy nilly though?
What's the point of copper mesh exactly? Nice work.
Eu que achei minhas aulas de crimpar fios de pares trançados na epoca da faculdade de ininformática, nas aulas de redes. Imagina esse então.
Do the two copper conductors actually make contact? In your example it looks like they do not, and all the current has to pass through the connecting pipe, which must have massively reduced capacity?
Obviously this is a professional and certified product so what’s the chance it can’t carry the necessary current after the splice? You armchair experts are so annoying.
If you had done the math first, you would have noticed that 1. Yes, the resistance at the joint is higher than the resistance of the wire and 2. its is negligible.
Wires are NEVER oberated at their physical limit. They are operated at currents where "gets warm but you won't burn your fingers" is the basic idea.
You may go ahead and invent a connection where the copper really connects on its full crossection, but I predict you are going to end up with mechanically complicated connections that save a few milliohms.
"Good enough, reliable and servicable in a trench on a construction site" is the name of the game. With a focus on reliable!
It is not about a perfect solution that takes 10 times as long and saves 10 watts.
How would you do different without making it very bulky? While still being as quick and reliable?
@@frikkied2638 Obviously he asked a practical question, gets called armchair expert. You pretentious twits are so annoying.
@@dragon411320 you’re right I was too harsh, sorry about that.
why are we watching this? i doubt many of us are gonna install a 10kV 3 core system any time soon...
ah... the wonders of the TH-cam algorithm...
Thank you so much dear ❤❤❤❤❤
Imagina o preço pra fazer uma emenda dessa? Só de material já vai uns 20 mil!!! Rsrsrs
pelo menos ele usou espaguete termo retrátil. Imagina ter que isolar tudo isso com fita isolante
Такие проекты делают богатые фирмы, а у них денег много
Cost to splice: $5000.00 Next day squirrel chews through all that work and goes up in a ball of plasma hotter than the sun. City goes dark.
they explaining it like we will do in home
Do Wago make connectors big enough? 🤣
@5:11 Mmmmmmmmm yeahhhh
One question, you have to de-energize first?
Yes
no
maybe
I would say absolutely yes. Ever see the arcs you get when a contactor at a substation opens and closes?
Depends on how brave you are
Hmm.... there seems to be something missing.... ? When the innermost tubes were crimped around the joining copper strands there was nothing forcing the copper strands towards each other. I feel like there should be total contact between the joining cables/strands? Maybe some kind of melted copper should be inserted in the tubes before / during / after crimping? The way this was done there may be a cavity between the strands?
It would require quite extreme heat to get the soldier flow properly between the copper strands, to a point where it may damage the insulation of the cable itself. Joint may have slightly higher resistance, but in terms of of the whole cable, the resistance of joint is negligible.
@@edgarasf123 Oki - I'm a self taught power engineer and small details like that cathces my eye and maybe it is no big deal like you says. But I'm off to work now. Must start early since it is difficult to get into the switching area if you are not an employee.
Don't they make giant wire nuts?
мне кажется электрическое соединение слабовато. получется идет провод который переходит в муфту а потом в обратно в провод. сама муфта выдержит токи которые идут по проводу? или прелесть какраз в том что токи там слабые?)
да вообще муфта кривая . наворотов много только толку от них мало . и монтажник у которого даже ножа для снятия изоляции нет
В самой муфте плюс еще сам кабель плющится и соприкасается концами.
Но все же соглашусь, что соединение не выглядит надежным с такими маленькими муфтами.
Хотя инженерам виднее и там все давно просчитано и протестировано)
@@amateurxxx3798 я бы во внутрь самой муфты губку металлическую вставлял. чтобы пустое пространство занимала и при сжатии уплотнялась
The sound has a serious error. At about 1:30, it says leave 500 mm at each end of the inner sheath. Actually it's 50 mm. The subtitles are correct. Why does the voiceover differ?
cause it was an after thought... the voice over just needs to not happen. :)
It broke my heart.
Thanks for the reminder, we will fix it
I don’t have a torch, can i use a lighter?
What is the parts and labor cost for this job?
Dudes mind will be blown when he hears about heat guns.
Heat guns are used in places where a blow torch can’t be used for safety reasons like confined spaces, places with a risk of a build up of gas etc. The job takes 3x as long, and if there’s even a slight breeze you may as well forget about it and go home.
What about the big hole in the outer layer on the left side
5:11 hehe
Is the background music necessary because it calms the worker in someway and assists him in concentrating on the task at hand?
Why is there semiconductive layers?
Я понимаю что качество соединительных муфт должно быть высоким,да бы зимой не долбить ковшом экскаватора землю что бы поменять стрельнувшую муфту, но все же есть некий предел. Качество / стоимость .
Да нужно было просто скрутить и изолентой замотать 😂 ну на крайний случай на ваги посадить
Он ничего избыточного в ролике не сделал, высоковольтный кабель же.
@@copetimusmaximus3363 что за множество смазок и подобие изолент ( возможно лента восстановления изоляции ) это все входит в комплект ? Сколько стоит такая муфта 50 тыс? Уверен не меньше.
@@Artem_38. да хоть 100 тыс., суть в том, что данные проекты делают крупные фирмы при строительстве инфраструктуры , где заказчик крупный магнат или госзаказ , а там денег, как грязи.
@@Artem_38. Провести новый кабель дороже. Делать качественно значит избежать новых затрат из полумер
Ну вот прям вижу как кабельщик всё это делает в траншее по колено в воде.
Odly satisfying to watch but I hoped the endresult Loopings neater.
Interesting process. What is wrong with those who insist on distracting "music"?
normal chinese. in every video they have annoying shit music.
Good thing he was wearing a hard hat.
🇵🇸 freedom for Palestine
🇮🇱🇮🇱🇮🇱
What’s wrong - can’t get a wire nut the size of a garbage can?
At 2.23_what is the role of copper shield ?
Ума не хватило гелем заполнить для гидроизоляции?)
I was just watching videos on Harry Potter lore, how the hell did I end up here?
Всегда так делаю :)
Fine, and now in the mud and 1,5 m underground.
I don't think the idea of the video is to show the difficulties of installation in a real life situation.
@@johnjackson8692
They (8-10 workers) needed 4 day's for 3 x 30kV underground cables after the existing cable blow up. (30kV at 1000A is explosive if something fails).
It's not so easy outdoor in the mud if 40000 people are waiting. There are many way's to make errors with underground cables. Western Union splice are for overhead wires, NASA use solder for better security (NASA-STD-8739.3).
@@losttownstreet3409 Like i said. This video is not meant to convey the problems and practicality's of a real life installation.
the best raychem
We are keep learning and want to be better. Raychem is our Goal :)
nice 👍
👏👏👏
I'm surprised the copper isn't soldered before clamped with steel connecting pipes.
They’re tinned copper through crimps
@@ShalomBrother The pipes are tinned copper? Makes sense. But I still don't get why the wires are not soldered before clamping them with the pipes, it doesn't seem an especially complex task considering the whole fuss and the connection would surely be better?
@@djkoti74 they just don’t need to be tinned, the crimp is sound enough. They used to Tin them before making a plumbed connection with a ferrule back in the day
@@djkoti74 you should not combine soldering with crimping.
Crimping with the right tool is literally airtight.
Tin creaps/flows/yield under pressure - crimping is applying pressure. So, you would force an airtight metal pack, then then tin would yield over time -> *bad idea*.
@@sarowie I'm a complete lamer on this. My intuition would say that air tightness is irrelevant because of layers of insulation and that low resistance high current flow is key here.
the connected part of cables is being more protected rather the whole cable itself...hahahahah
That’s not protection, it’s stress control
Giant WAGO should do it. 😉😉😉
Есть-царь пушка,
А это-царь скрутка)))
That’s the biggest heat shrink I’ve ever seen. I came in my pants three times watching this
دادي بادي
Man, Cellpack's instruction video had an absolutely banging soundtrack compared to this.
беда китайской проводниковой продукции, нет цветовой маркировки, соединяя рабочую линию можно перепутать фазы, вызвав на объекте перекос, и выхода из строя важного и не менее дорогостоящего оборудования. Особенно на объектах не имеющих защиты от перекоса фаз. А так, соединение вполне доступно каждому)
Good video!
The robot voice is terrible. Please use a live person. Dump the music. Then I'll subscribe!
when he applied the silicone paste
And what if you joint the wrong phases?
then everyone's motors from here down start spinning backward
I think a;; the insulation is overkill... this would be good if this was an underwater cable
Excellent job
Thank you very much~
They wouldn't want doing that job as I'd have to redo it a couple of time because I forgot slip the plug or something on before making the join ;-)
А, где синяя изолента? Непорядок.
у них стандарты другие
@@Павликморозов-т7т без синей не получится, все развалится к чертям.
Why connect when you can put it in a distance up to ~3cm so the voltage will be enough to create a lightning from one end to another and so the electricity will go through?
🙄
3 wires done…997 more to go.
It’s kind of messy, I would have expected a little more effort on the finish!
did not use blue electrical tape, so it will break quickly
electrical tape can be customized in size and colors. All by testing and durable :)
This artificial voice accent is like... Swedish Texan.
the hard hat lol
crl, pq eu fiquei 12min assistindo isso? Sou advogado
Comme ça c'est simple, en fond de tranchée c'est pas la même musique !🤣
ah ah, watch out to not shrink the wrong one (before it was in place)...
5:31 Y los guantes?
Oh I get it ... 9V, like a cheap Chinese knockoff of 3M.
It's just because our company name like "9V" when speak in Chinese. It's interesting and Let everyone remember us more vividly~
Thanks
Soo big and not easy
i forgot to put in the sumi tube before i joint the cables.
Err, why are, nt the joints offset from each other.
Because they can’t be
сколько такая муфта стоит ? в рублях наверное под 20к ?
Может до войны лет 10 назад столько и стоила, а сейчас , думаю, не меньше 100к, в наших деревянных.
Mehh too much hussle. Just twist the cables and use Silver tape. XD
Watching this after soldering and putting heat shrink tube to a thin 1mm thermistor wire seems just overly huge. Fiddly hands.
el acople de auminio de cada cable me parece muy debil.
I like how almost every term in this is wrong
Oops, I think I damaged the insulating layer when stripping the semi-conducting layer at 2:43