2 years later, but if anyone ever reads this: You don't hear the electricity. The buzzing comes from the friction and vibrations that result from the induction of electromangetical forces on the spires of the coils. The forces change it's directiom whenever the sinusoidal electrical wave alternates it's polarity, making it so the coil is pulled from one side and then from the opposite one 60 times per second, hence the vibration.
@@mechanicalgarage5937 This thing can do more than just wasp zapping. With a billion volt and a million amp, this will be a very good human deterrent weapon.
I always describe the sound of transfor.ers to people like this (My countries grid voltages and the transformers i heard of said voltages) -10 kV is your friendly neighborhood cat, humms arround you could fall asleep -30 kV is a tad more aggressive ... like a cat RLY purring.. cheetah for example -110 kV is like a fucking train comming straight at u and screaming "RAAAAAAAAAAAAA" -220 kV sadly didn't hear it till now. Same for 380 kV
@hawkturkey If transformers would be the only consideration, all power grids would run at higher frequencies. Long distance transmission lines have greater parasitic losses at higher frequency. Electric motors also prefer lower frequency. For that reason, many railroad traction power networks run at lower frequencies to this day.
@@EphemeralProductions Actualy, the maximum value of magnetic flux ramps up linearly with the time a voltage is applied to a coil. So at 50Hz the voltage is applied for 1/50th of a sec (I simplified a bit) which is longer than 1/60th of a sec. Thus the value of the flux is higher at 50 Hz. To cope with that, one can add more iron to the transformer. Thus the flux can go in a larger material and the density is lessen. This allows the designer to decrease the losses at the expense of more material. For what I know, the magnectostriction is the property of some materials to link internal forces with magnetic fields (which is different to Laplace's forces discussed above that are forces acting on the electrons and are present in every conductors). So I would say that it also mitigate magnetostriction but I don't know if it is a real design problem. Nonetheless in power supply with higher frequency (~1000 - 10,000 Hz), it can create some audible noises that are annoying.
I always have this sense of fear being anywhere near stations m substations , or anything with multiple insulators. I understand the fundamentals of electricity and it’s use in modern and the measures put in place to ensure safety, but knowing what can happen to your body in a mere instant should something go wrong scares me.
@@flaplaya Yeah it's the "ELF radiation" that's making you fearful, not the knowledge that there's a manmade structure that has a terrible power once only thought possible of gods which could kill you in a mere instant right next to you.
I have worked in the power industry here in the us since i was 18. I have work on 5vdc all the way to 345kv. The best question I have ever been asked on a job interview was "why does the transformer hum" and the answer was" because it didn't know the words"!
You don't get near them. Because if, for some reason the core has some residual magnetism. The bushings can shatter. Happened to one 650 MVA autotransformer in my old company. A fault on the grounding reactor through the tertiary windings had brought it offline. And the protection relay glitched and re energised. There's special protocol to follow if a transformer trips. Anyhow the whole thing went up in smoke, quite the BBQ.
@@HorizonSniper__ No. IDK what this guy is talking about. Maybe I just live in the other half of L.A. but we haven't had a power outage for quite a few years now
I come back to this video once in a while. I would like to add that Carrier Aquasnap water/water heatpumps also sound like this when starting and running. When we sit next to them in technical rooms we wear hearing protection and at the end of the day you come home with headaches
i used to work in manufacturing plants that had these and now i don't. i don't know why i miss these ambient sounds lol it's kind of relaxing to hear these
+logycam10 Nooo, it's not saturating! Rodalco would be running for his life if the thing saturated - that's what causes some violent transformer failures! When the core saturates, it can not carry any more magnetic flux, and thus the inductance drops, causing the transformer to act like a short circuit! You know what happens then ... XD
+Benjamin “Ozias” Esposti Thanks for the knowledge, now why is the transformer louder when it is first switched on and get quieter over the course of a few seconds?
+logycam10 It's because there isn't any magnetic flux in the core when the transformer is not energized. One can think of it like a capacitor, charging up when power is applied. Small transformers, like say in my bench power supply, make a quick thump noise. These large transformers are many many many times the size of that little 200W transformer, and thus they require many times the magnetizing power as the small transformer does. The power grid simply can't supply enough energy in one half cycle to magnetize the transformer core, so it happens over multiple cycles .. in the case of the large transformer, it takes a few hundred cycles! I'm not an electrical engineer, but hope to become one ... so yeah that information might not be 100% accurate ... but you can have a look on this page: www.electrical4u.com/magnetizing-inrush-current-in-power-transformer/
I don’t have a positive answer, but I don’t think it’s due to the time required to magnetize the transformer core. Benjamin “Ozias” Esposti says it takes a few hundred cycles. Well, at 50 Hz, a hundred cycles is 2 seconds, but this transformer continues to change its sound and get gradually quieter from 14 seconds when it comes on, until 41 seconds when the video changes. That’s 27 seconds or 1350 cycles and it still hasn’t settled down. My best guess is the change is due to heating of the transformer windings and the oil surrounding them.
Inrush current, input surge current or switch-on surge is the maximal instantaneous input current drawn by an electrical device when first turned on. Alternating-current electric motors and transformers may draw several times their normal full-load current when first energized, for a few cycles of the input waveform. Power converters also often have inrush currents much higher than their steady-state currents, due to the charging current of the input capacitance. The selection of over-current protection devices such as fuses and circuit breakers is made more complicated when high inrush currents must be tolerated. The over-current protection must react quickly to overload or short-circuit faults but must not interrupt the circuit when the (usually harmless) inrush current flows.
wow. i bet you could feel it in your bones from that distance. tell me, in the 3 days did it have time for the oil to cool back to ambient temperature??
Ryan Carlen Eh, it happens all around the world, not only in the US. And nobody really knows a good solution for this (except the pricey one of replacing ALL the overhead wires with cables dug into the ground).
Good question. The sound comes from Magnetostriction. Basically the 50 Hertz flux going back and forth through the iron laminations of the transformer.
:grins: This is what we call *low* voltage :). I'm a SCADA engineer creating control systems for the National Grid so I'm far more used to the 400, 275, 132 and 66kV side but I did do work for the REC's for a few years so I am familiar with the 'local' distribution side of the street. Mind you, we are dealing with a lot of power station installations in recent times and it is oddly common to see the low voltage ancillary generator and power quality gear associated with them.
50 Hz hum sounds so weird to my American ears. I understand the number 50 was chosen because Europeans liked it due to their familiarity with the metric system. On the other hand, in the USA 60 Hz was chosen because it is more efficient. Thus in Europe and other areas of the world where 50 Hz power is used, all inductive equipment such as this transformer must be oversized to compensate for the lower efficiency. And of course more power is wasted as heat. All for the sake of having a nice comfortable number 50.
100 % true what you said. Interesting as also frequencies of 80 Hz in NZ, and 133 Hz were used in the USA in the early days of electricity networks being built. The Air Force uses 400 Hz for reasons mentioned as equipment is more compact again and also lighter.
Are you sure? A lower frequency generates less eddy current / losses and lower reactance, a 50Hz grid is more efficient, it just requires more iron and copper
Well the only issue there is that you need more iron and more copper in the transformers to transfer the lower frequencies. And you need a certain mass on a railway engine anyways so this is not a bad thing per se. After the second world war, Germany basically rebuilt the railway system from scratch and electrified a huge part of it, leading to the issue of which power system (DC? AC? Frequency?) to use. The choice of AC over DC for longer tracks was obvious, but the series-characteristic motors were the only option for railway engines prior to the introduction of on-engine inverters that generate three phase AC and drive the motors with that. Those things best run on DC... and low frequency AC behaves so close to DC in those engines that they used that. The modern trains built today have inverters on them which can take multiple voltages and frequencies, so I guess there will be a point in time when they change over from 16.7 Hz (yes, not 16 2/3 but 16.7 - no more rotating converters...) to 50 Hz over here, for efficiency reasons (converter loss). The debate about what is more efficient - 50 or 60 Hz - is no real debate as such. You need more iron and copper for 50 Hz, but the choice of 50 vs 60 Hz is much more a question of number system (US is pretty much loaded with divisions by 12 whereas Europe uses decimal basically everywhere). The efficiency does not really change significantly. Weight, however, does.
For those who are confused, AC power is not the same as the DC one. AC has two parts: reactive power(VAr) and apparent power (VA). Reactive power is from components that store power (like capacitors and coils) while apparent is from components that consume power(like resistors). These two make the AC power.
That's not correct. Apparent power VA is the product of the rms voltage times the rms current. It does not take the phase angle into account. What you're describing is reactive power versus true power.
0:15 Omg his sound. One day that sound scard the shit out of me, I was walking on the way back to my hotel room and was passing trough these things, AMD suddenly BANG. I jumped and literally took a shit on the tiles below
WOW!! raymond that place looked epic mate. Looked huge!!! And that transformer was a beauty! The noise was great too ;-) Thanks mate for sharing another awesome video. ~☆~☆~☆~☆~THUMBS UP~☆~☆~☆~☆~
Used to have a fuse box of some sort that gave power to an entire village. The buzz it made was so loud and that you could feel it vibrate in your throat. An electrician died whilst trying to revive it. People say he got zapped whist standing 3 meters away from the box.
Nice video! This is not so big power transformer however. I have worked on 500 MVA and beyond as technologist. The biggest one vas 720 MVA if I remember. And most tricky one was HVDC with its very large bushings.
Lots of comments here about 50 Hz, but this is an impulse series and you can hear lots of higher harmonics. That isn't the sound of magnetics; that's the sound of arcing.
The hum of 50 Hz is close to G on a piano keyboard that's tuned to A = 440 Hz. Take 50 Hz up 3 octaves and it'd be 400 Hz, which is the G just under that A. People with perfect pitch (aka absolute pitch) could tell the difference between 50 and 60 Hz instantly, but probably quite a lot of others could hear it too, as several people have said here. A Hz (hertz) is a unit of frequency: one Hertz = one cycle per second.
I'm pretty sure those fans are off. They appear to be windmilling. If the transformer's oil gets hot enough, one or more fans will spin up to keep it cool.
Congrats on the 10million views. The first video of yours I watched, was about substation transformers going online can. Can we please have more of these. ;-) As well as the other things.
Excellent pro tip is if you literally hear the electricity coming from it better not fiddle with it.
everestfalls it depends if your grounded it also depends on the amperage,
2 years later, but if anyone ever reads this:
You don't hear the electricity. The buzzing comes from the friction and vibrations that result from the induction of electromangetical forces on the spires of the coils. The forces change it's directiom whenever the sinusoidal electrical wave alternates it's polarity, making it so the coil is pulled from one side and then from the opposite one 60 times per second, hence the vibration.
funnily enough it feels the same as it sounds
@@luisurdiales3091 Fascinating
@@luisurdiales3091 I clicked to reply the same, you were early.
I hear this sound from my sister's room every night.. i was wondering what it was... Thank you 👍
Disgusting
@@Naga19-p3w what why
Then u should check it out...
Maybe you should join her and see what she is up to.
@@lachtosenotlachlan3053 thats how he hears it...
Imagine the wasp-zapper you could make with that!
galactic wasp annhiliator!!!!!!! extinction on a universal scale!!!!! i like it
At this scale, it can zap more wasp too at the same time.
I hope to see a zillion volt a zillion amp system sooner rather than later.
Why make a wask zapper when u can easily make a hooman zapper
You mean wasp extinction machine
@@mechanicalgarage5937
This thing can do more than just wasp zapping.
With a billion volt and a million amp, this will be a very good human deterrent weapon.
Top 5 bass drops in history
Only if TH-cam had comment awards...
Yay, ein Deutscher
True
Lol
it aint coil whine, that's a coil grunt
If it's 120 MV, Why don't you check with a multimeter huh?
Lol it will explode with 100,000+ volts
It's MVA not MV.
Bruhhh. MVA is power.
*the multimeter has melted, and so have you*
@@pushkard9377 power is in Watts. VA is apperant power
Professor: -Tell me something about large power transformers!
Student: -KRÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜ!
Professor: -Accepted.
technograd *50 hertz hum intensifies.*
Short circuit vidéo ---th-cam.com/video/d7xcRK8LCEg/w-d-xo.html
awfulguitarplucker *KRÜÜÜÜÜÜÜÜing in Spanish*
**Hums in 60 Hertz**
Shiven's Video Zone Can you stop posting that link on all the comment threads? Thanks.
I love the sound of high voltage in the morning.
That's not the sound of high voltage...
That's the sound of the vibrating core of the transformer.
❤
Sounds like victory
Nirmit Mishra I love the sound of vibrating cores in the morning ( ͡° ͜ʖ ͡°)
The laminations right? It's a great sound. Anyone interested in electricity should definitely get into a trade school. It's interesting stuff!
sounds like my coffee machine
branimir8048 der chicco hahahahah true
And a low rpm washing machine and microwave and neon lights... because they run at the same frequency
TheOtherWhiteBread0 My coffee machine also makes such sound.
TheOtherWhiteBread0 no. Espresso machines.
This is normal : they're both about providing energy :)
European 50 HZ sounds better than US 60 HZ, deeper with more authority.
I always describe the sound of transfor.ers to people like this
(My countries grid voltages and the transformers i heard of said voltages)
-10 kV is your friendly neighborhood cat, humms arround you could fall asleep
-30 kV is a tad more aggressive ... like a cat RLY purring.. cheetah for example
-110 kV is like a fucking train comming straight at u and screaming "RAAAAAAAAAAAAA"
-220 kV sadly didn't hear it till now. Same for 380 kV
@hawkturkey If transformers would be the only consideration, all power grids would run at higher frequencies. Long distance transmission lines have greater parasitic losses at higher frequency. Electric motors also prefer lower frequency. For that reason, many railroad traction power networks run at lower frequencies to this day.
@hawkturkey so the lower the frequency, more iron is needed? Is it to handle the magnetostriction vibrations sufficiently?
@@EphemeralProductions Actualy, the maximum value of magnetic flux ramps up linearly with the time a voltage is applied to a coil. So at 50Hz the voltage is applied for 1/50th of a sec (I simplified a bit) which is longer than 1/60th of a sec. Thus the value of the flux is higher at 50 Hz. To cope with that, one can add more iron to the transformer. Thus the flux can go in a larger material and the density is lessen. This allows the designer to decrease the losses at the expense of more material.
For what I know, the magnectostriction is the property of some materials to link internal forces with magnetic fields (which is different to Laplace's forces discussed above that are forces acting on the electrons and are present in every conductors). So I would say that it also mitigate magnetostriction but I don't know if it is a real design problem. Nonetheless in power supply with higher frequency (~1000 - 10,000 Hz), it can create some audible noises that are annoying.
wtf does this even mean?
How many people on here were able to tell this is a 50Hz country as soon as it energized?
by his accent
Sounds Aussie accent to me (or NZ)
After 30 years with 60 Hz I should have noticed that. Now that you mention it.
Good ears
Me
I imagine 50 Hz as the color brown.
And what does it taste like?
Richard van Pukkem It doesn't have a taste, silly.
gantmj What?
Metallic taste.
that could be a form of chromesthesia.
It’s sad that this is one of the LEAST weird things in my recommended
This stuff is cool
@Blood Beryl Well, now we all want to see YOUR playlist.
@@bellowphone yep!!!
@@bellowphone I went to his channel and nothing 😑
I always have this sense of fear being anywhere near stations m substations , or anything with multiple insulators.
I understand the fundamentals of electricity and it’s use in modern and the measures put in place to ensure safety, but knowing what can happen to your body in a mere instant should something go wrong scares me.
Don't forget about the ELF radiation. It has been known to cause apprehension, fear, even panic.
@@flaplaya pseudoscience.
@@flaplaya Yeah it's the "ELF radiation" that's making you fearful, not the knowledge that there's a manmade structure that has a terrible power once only thought possible of gods which could kill you in a mere instant right next to you.
I have worked in the power industry here in the us since i was 18. I have work on 5vdc all the way to 345kv. The best question I have ever been asked on a job interview was "why does the transformer hum" and the answer was" because it didn't know the words"!
Could really hear that VTEC kick in, yo.
i've scoped around multi-hundred MVA 500kV autotransformers, they are something.... never experienced one switch online before though
You don't get near them. Because if, for some reason the core has some residual magnetism. The bushings can shatter. Happened to one 650 MVA autotransformer in my old company. A fault on the grounding reactor through the tertiary windings had brought it offline. And the protection relay glitched and re energised. There's special protocol to follow if a transformer trips. Anyhow the whole thing went up in smoke, quite the BBQ.
Takes a while for all that metal to settle.
I still can't run my computer, toaster oven, and microwave oven on the same circuit at the same time without killing power to half of Los Angeles.
Wait, the American power grid is *that* unstable?
@@HorizonSniper__ No. IDK what this guy is talking about. Maybe I just live in the other half of L.A. but we haven't had a power outage for quite a few years now
@@HorizonSniper__ The USA power grid is over 100 years old, so technically it is that bad in some areas but not in Los Angeles
Sounds exactly like a larger model scroll compressor in refrigeration machines, like a Danfoss SZ300 :) Even the start high load sound.
exactly, the start and the running sound is the same
Pro tip. The transformers and compressors are running at the same frequency. 50 times a second. 50 hertz.
@@JonteTheMan1 Touche!
I come back to this video once in a while. I would like to add that Carrier Aquasnap water/water heatpumps also sound like this when starting and running. When we sit next to them in technical rooms we wear hearing protection and at the end of the day you come home with headaches
Can't miss the difference in the hum between this and our 60hz systems here. A 50hz soak is definitely noisier.
Alan Lopez not really noisier, just 60hz is smoother.
@@akzzzx 50 Hz tends to be noisier because it's closer to the mechanical resonance frequency of structures, which are usually in the 10 Hz range.
@@akzzzx 50Hz sounds angrier. Which is appropriate, given that it's more prevalent in countries where you've also got twice the voltage.
But they’re both pretty authoritative.
HV Electricity... YUMMY!
@@demoniack81 higher voltage won’t kill you if your grounded or have safer plugs. USA I’m looking at you.
It's interesting to hear the sound difference between no magnetic flux and operating levels.
i used to work in manufacturing plants that had these and now i don't.
i don't know why i miss these ambient sounds lol it's kind of relaxing to hear these
no one:
old television powering up at night when everyone's sleeping: 0:14
Once Upon a time was relatable
That's the best sound ever made by anything ever :D
You haven't heard a 2 stroke diesel yet.
Sal C Savage
Except for this, with earbuds in, turned right up. th-cam.com/video/RW-G7pF6gUQ/w-d-xo.html
MonkeyTrumpet :pPalalalakakakakskskskswk:Dksksksksks,s,as,de deed j de node co femur c bge
nah th-cam.com/video/gEzXrDL4F3k/w-d-xo.html
This is a good time to hear “tool time’s Tim the Tool Man” do his chant! Augh augh augh!!
Wow. That transformer takes a hell of a long time to saturate. Love the sound. Thanks for the vid.
+logycam10
Nooo, it's not saturating!
Rodalco would be running for his life if the thing saturated - that's what causes some violent transformer failures!
When the core saturates, it can not carry any more magnetic flux, and thus the inductance drops, causing the transformer to act like a short circuit! You know what happens then ... XD
+Benjamin “Ozias” Esposti Thanks for the knowledge, now why is the transformer louder when it is first switched on and get quieter over the course of a few seconds?
+logycam10
It's because there isn't any magnetic flux in the core when the transformer is not energized.
One can think of it like a capacitor, charging up when power is applied.
Small transformers, like say in my bench power supply, make a quick thump noise. These large transformers are many many many times the size of that little 200W transformer, and thus they require many times the magnetizing power as the small transformer does.
The power grid simply can't supply enough energy in one half cycle to magnetize the transformer core, so it happens over multiple cycles .. in the case of the large transformer, it takes a few hundred cycles!
I'm not an electrical engineer, but hope to become one ... so yeah that information might not be 100% accurate ... but you can have a look on this page:
www.electrical4u.com/magnetizing-inrush-current-in-power-transformer/
+Benjamin “Ozias” Esposti Makes perfect sense! I never thought about conductors limiting the transformer's magnetic start-up time.
I don’t have a positive answer, but I don’t think it’s due to the time required to magnetize the transformer core. Benjamin “Ozias” Esposti says it takes a few hundred cycles. Well, at 50 Hz, a hundred cycles is 2 seconds, but this transformer continues to change its sound and get gradually quieter from 14 seconds when it comes on, until 41 seconds when the video changes. That’s 27 seconds or 1350 cycles and it still hasn’t settled down. My best guess is the change is due to heating of the transformer windings and the oil surrounding them.
I absolutely love that sound when it first turned on
Inrush current, input surge current or switch-on surge is the maximal instantaneous input current drawn by an electrical device when first turned on. Alternating-current electric motors and transformers may draw several times their normal full-load current when first energized, for a few cycles of the input waveform. Power converters also often have inrush currents much higher than their steady-state currents, due to the charging current of the input capacitance. The selection of over-current protection devices such as fuses and circuit breakers is made more complicated when high inrush currents must be tolerated. The over-current protection must react quickly to overload or short-circuit faults but must not interrupt the circuit when the (usually harmless) inrush current flows.
Man I worked in substations for almost a year that buzz you stop hearing while working but when you try to sleep all you hear is buzzing
That inrush is just very beautiful innit.
wow. i bet you could feel it in your bones from that distance. tell me, in the 3 days did it have time for the oil to cool back to ambient temperature??
TheOtherWhiteBread0 All the power transformers are oil cooled. That oil....
Ryan Carlen Eh, it happens all around the world, not only in the US. And nobody really knows a good solution for this (except the pricey one of replacing ALL the overhead wires with cables dug into the ground).
Well, look it up then. It's a known phenomenon that causes death and serious maiming of MANY big, predatory birds across the globe.
Bald eagle tears=bald eagles electrocuted by touching live HV wires/parts and a grounded object.
Unnamed Player Yeah, sure, 24/7 even...
I was like how do I know when it starts
0:13
Oh....
For comparison with HP, if the PF is correct (1), this is equivalent to 160,000 horsepower.
The sound of billions of angry pixies trying to escape containment.
You know it's a monster... just look at the fans on that thing! Thanks for sharing!
There apparently bis a 12 GVA transformer now. 100 times as large
Hahahh an i9 needs 10 o those not to fry hah
I'm waiting for the music to begin, damn you Kraftwerk😂
I'm here waiting like an idiot for the fans to run faster.
You're not alone
Gold videos I used to watch back in 2010s
Wow just hearing the sound is extremely terrifying OMG 👀
That's pretty powerful. Kind interesting to see that you're going directly from cable to AL-lines on such a new station :/
I like how VLC PLAYER is witnessing all what is happening.
Omg get out 😂😂
Love the “GEEEEEEEEeeeee” sound - “G” in reference to the note
That sound was glorious.
Christ did you feel a disturbance in the air when that thing kicked on?
What a sound.
Might be a stupid question, but what exactly is making the sound? Is the electricity so strong that it creates soundwaves?
Good question. The sound comes from Magnetostriction. Basically the 50 Hertz flux going back and forth through the iron laminations of the transformer.
@@RODALCO2007 very interesting, thanks for the answer
That sounds like the hum I can sometimes hear on some streets.
Excellent pro tip:Don't cut off your ears because after a month of working there they'll probably fall off on their own.
That would make a nifty ringtone for certain engineers
Sound of magnificent power
In the first 2-9 sec it sounds like you’re hitting a iron golem in Minecraft
As photonicinduction would say, that's a nice sound!
Anyone else got this recommended after 7 years?
Gotta love that 50 Hz sound!
Not sure why this is in my recommended 6 years later but I'm not mad about it.
same
Mmmmm, magnetostriction
:grins: This is what we call *low* voltage :). I'm a SCADA engineer creating control systems for the National Grid so I'm far more used to the 400, 275, 132 and 66kV side but I did do work for the REC's for a few years so I am familiar with the 'local' distribution side of the street. Mind you, we are dealing with a lot of power station installations in recent times and it is oddly common to see the low voltage ancillary generator and power quality gear associated with them.
Primary side on this is 110kV
0:14 -KRÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜÜ!
it seems the sound of the war of worls
That transformer had problems with delamination of the core. Take it out and test it asap
50 Hz hum sounds so weird to my American ears. I understand the number 50 was chosen because Europeans liked it due to their familiarity with the metric system. On the other hand, in the USA 60 Hz was chosen because it is more efficient. Thus in Europe and other areas of the world where 50 Hz power is used, all inductive equipment such as this transformer must be oversized to compensate for the lower efficiency. And of course more power is wasted as heat. All for the sake of having a nice comfortable number 50.
100 % true what you said.
Interesting as also frequencies of 80 Hz in NZ, and 133 Hz were used in the USA in the early days of electricity networks being built.
The Air Force uses 400 Hz for reasons mentioned as equipment is more compact again and also lighter.
Are you sure? A lower frequency generates less eddy current / losses and lower reactance, a 50Hz grid is more efficient, it just requires more iron and copper
Well the only issue there is that you need more iron and more copper in the transformers to transfer the lower frequencies. And you need a certain mass on a railway engine anyways so this is not a bad thing per se.
After the second world war, Germany basically rebuilt the railway system from scratch and electrified a huge part of it, leading to the issue of which power system (DC? AC? Frequency?) to use. The choice of AC over DC for longer tracks was obvious, but the series-characteristic motors were the only option for railway
engines prior to the introduction of on-engine inverters that generate three phase AC and drive the motors with that. Those things best run on DC... and low frequency AC behaves so close to DC in those engines that they used that.
The modern trains built today have inverters on them which can take multiple voltages and frequencies, so I guess there will be a point in time when they change over from 16.7 Hz (yes, not 16 2/3 but 16.7 - no more rotating converters...) to 50 Hz over here, for efficiency reasons (converter loss).
The debate about what is more efficient - 50 or 60 Hz - is no real debate as such. You need more iron and copper for 50 Hz, but the choice of 50 vs 60 Hz is much more a question of number system (US is pretty much loaded with divisions by 12 whereas Europe uses decimal basically everywhere). The efficiency does not really change significantly. Weight, however, does.
Short circuit vidéo ---th-cam.com/video/d7xcRK8LCEg/w-d-xo.html
Nigel Holmes Honestly im at lost since I have bare understanding at electrical engineering so Ill just stay for the awesomeness.
Some really angry pixies in there
For those who are confused, AC power is not the same as the DC one.
AC has two parts: reactive power(VAr) and apparent power (VA).
Reactive power is from components that store power (like capacitors and coils) while apparent is from components that consume power(like resistors).
These two make the AC power.
That's not correct. Apparent power VA is the product of the rms voltage times the rms current. It does not take the phase angle into account. What you're describing is reactive power versus true power.
Ahhh, the humming sound of core is so soothing😍👂
0:15 Omg his sound. One day that sound scard the shit out of me, I was walking on the way back to my hotel room and was passing trough these things, AMD suddenly BANG. I jumped and literally took a shit on the tiles below
This dude strait up took a shortcut through a high voltage transformer station.
@@lukeonuke in India everything is possible my dude 🤣
now THAT is a lot of power. I'd hate to be there if something shorted that out. I'm sure a massive electric short and fire would ensue.
WOW!! raymond that place looked epic mate. Looked huge!!!
And that transformer was a beauty!
The noise was great too ;-)
Thanks mate for sharing another awesome video.
~☆~☆~☆~☆~THUMBS UP~☆~☆~☆~☆~
I thought you were trying 2 show those fans at first and I thought “Is that the fans makin’ that sound???” 😂😂😂😂😂
Ah man I love these sounds. I wish I could have something like this at home.
Be ready to pay the bill for the gigantic amounts of electricity these things use even if you buy one whith5000000$
Respect it becomes human. We wish you and your family happy holidays and a happy new year 2021.
The sound of pure powerrrrr!
Love the 50hz hum.. Something so much more menacing yet soothing about it compared to 60hz
Awesomeness.
Used to have a fuse box of some sort that gave power to an entire village. The buzz it made was so loud and that you could feel it vibrate in your throat. An electrician died whilst trying to revive it. People say he got zapped whist standing 3 meters away from the box.
*_... laughs maniacally in 50 Hz._*
People don't realize the technological challenges involved in switching that much electricity without something exploding in the process.
Very Nice! Would love to be where you are standing when this behemoth was energized.
This is actually a small transformer
Nice video! This is not so big power transformer however. I have worked on 500 MVA and beyond as technologist. The biggest one vas 720 MVA if I remember. And most tricky one was HVDC with its very large bushings.
Literally felt a portal to the next dimension open up when that kicked in 😅
The microwave at 3am when I'm trying to get a midnight snack:
Seriously dunno why they don't come with a night mode these days. First world problems I guess.
awesome, just listen to that!!!!!!!
Why is there a fence around it? I like that noise. I want to get closer; perhaps climb on it and poke it with a screw driver to see how it works.
And again the TH-cam algorithm decided it's time for us to watch this video
Lots of comments here about 50 Hz, but this is an impulse series and you can hear lots of higher harmonics. That isn't the sound of magnetics; that's the sound of arcing.
So when the aliens in War of the Worlds and Mass Effect attack they're just flipping the on/off switch to make us crap our pants?
That was big brass fanfare horn, to indicate "we start the battl.... I mean massacre"
The hum of 50 Hz is close to G on a piano keyboard that's tuned to A = 440 Hz. Take 50 Hz up 3 octaves and it'd be 400 Hz, which is the G just under that A. People with perfect pitch (aka absolute pitch) could tell the difference between 50 and 60 Hz instantly, but probably quite a lot of others could hear it too, as several people have said here. A Hz (hertz) is a unit of frequency: one Hertz = one cycle per second.
The pitch difference between 50Hz and 60Hz is quite obvious
@@LoganT547 I know - it's a bit over 3 semitones. Maybe I underestimated the general population. 🙂
0:22 some kind of breaker being locked into position? or was that the disconnect winding up?
DC closing coil releasing
TheOtherWhiteBread0 Did you have your elementary school teacher help you with that oh so original remark?
Absolutely love the buzz, reminds me of old BR EMUs like the Class 320s and 318s at idle
Man, That is a lovely sound. What, Or how much exactly is 120 MVA?
120,000 kW
RODALCO2007
Or 120 Million Watts.
*****
or 0.12 gigawatts, quite a bit less than the 1.21 gigawatts we need!
robertsulley
LOL ;)
Wondering , how cool it will sound when it will blast ?
This is the sound a coffee machine make a sunday morning at 5am
Imagine the electromagnetic forces on the windings and the core while it's stabilizing.
0:13 Online classes sound quality be like:
I can feel the current 🤯
0:14
*_I N A W O O R L D . . ._*
I'm pretty sure those fans are off. They appear to be windmilling. If the transformer's oil gets hot enough, one or more fans will spin up to keep it cool.
Sounds like a power chord for a rock song!
Voltage is checked in the insight office or trailer, there a 120 volt tap. This is were they check for proper voltage
beautiful sound
A pair of Nvidia RTX 5090 spotted in the wild
Watch the video and press the number 3 on your keyboard.
For more enjoyment: Press again!
:D
timecode?
Congrats on the 10million views. The first video of yours I watched, was about substation transformers going online can. Can we please have more of these. ;-) As well as the other things.