pretty big boy Up there with some of the largest electric motor Ive been around those were 1250kw and they were deep down in a sewage pumping station lifting sewage up to the surface from ~45m deep. One motor was driving one pump each via a driveshaft and the whole setup was only spining at 750rpm which meant the torque was at around 15.000nm which is wild to think about but a semi truck in a very low gear at full throttle can easily send that kind of torque into the driveline. Bro those pumps were able to pump sewage trought a 45m pipestack at around 4.5bar and still they had a max flow of like 2600l per second. Unreal power. And it gets better they had 10! pumps in there. They made the entire building vibrate constantly I mean they pump raw sewage and all the garbage in there these pumps would probably shred a big branch or woodpieces and no one would notice. Even with the sewer at max capacity like literally 100% full to the point where it was shedding off water at overflows upstream due to severe rain they were only running 5 to 6 pumps at a time. Of course they had to overbuild the pump station for redundancy so one pump can be taken out of service at all times. The whole installation was of enormous scale like you dont realize how big a room 60 meters wide and 45m tall really is. Each pump had its own transformer and they were switched on the HV side too (22 or 33kv I dont remember) because 1000+ amps per phase on the 690V side was too much. As you can imagine standard SF6 switchgear handling a fraction of the current that would be on the LV side lasts longer. But they had some sort of IGBT frequency converter setup on the LV side to slow the pumps down and for a softer startup I would assume. Didnt have a detailed look at the cabinets I was there to perform maintenance on something else.
@calfeggsАй бұрын
Damn! Now that is something that'll pipe the shit right outa your house!
@SkyzTh3Limitt27 күн бұрын
Great info! Thanks for the knowledge. 👍🏽
@stephens5093 Жыл бұрын
My screen dimmed when that thing came on
@TheAmazingAdventuresOfMiles Жыл бұрын
Yep, my fire extinguisher flew across the room!
@high1voltage1rules4 ай бұрын
🤣🤣🤣👍🏻
@chriswalford416110 күн бұрын
😀
@mysock351C4 күн бұрын
And again when the second one came on.
@downside7671 Жыл бұрын
high voltage motors sound so good
@WilmoTheBear7 ай бұрын
I don't think any fictional machinery scares me more than the real stuff.
@fx-studio18 күн бұрын
The sound of Kv's trying to go somewhere just hoping its not towards you.
@psirvent8 Жыл бұрын
Wow ! Hear this massive inrush at the beginning. And the Clunk. Yep, it is proper industrial stuff, maybe one of the manliest things on the planet.
@MarkArrand-cf4cl10 ай бұрын
My electric bill just shot through the roof on start-up!😂
@picobyte Жыл бұрын
I love the juicy sound it makes.
@artofnickАй бұрын
There's 3 different sound harmonics. Very cool and LOUD AS HELL
@MervynPartin8 күн бұрын
There were 2 rotary convertors on the essential supply system of the nuclear power station at which I worked for 20 years. In normal operation they would maintain a constant trickle charge to the storage batteries. If the incoming 415V ac supply was lost, the salient pole ac generator would maintain sufficient power to run the low speed circulator pony motors and oil pumps. Starting up following maintenance was not as easy as in this video. A diesel alternator at reduced voltage was connected to the ac generator to run slowly up to full speed whereupon the dc motor/generator would be excited and connected to the battery. The ac breaker would be opened and reconfigured to synchronise to the ac busbars, everything then being readjusted to maintain the battery trickle charge. Horrible machines, but at least the diesel alternators were good- W. H. Allen manufacture.
@SquishyZoran Жыл бұрын
I love the setup for the cooling and that would make an awesome fountain!
@mysock351C4 күн бұрын
In principle it’s municipal water but god only knows what’s growing inside. Parents had that problem with their multi-kilowatt medical laser that had filtered DI water cooling and algae loved to grow in there (presumably due to the light leakage from the xenon lamp and room lighting). Had to flush it every so often to get the green goop out. Although the copper plumbing and constant circulation here probably keeps it fairly sterile.
@herrlito-hv2 жыл бұрын
what a Monster!
@Fireship1 Жыл бұрын
I think I saw the New York City skyline dim at start up!
@TheTheo586 ай бұрын
I recall watching a video of a 1930's radio station that used one of these rotary converters, the voltage output was less than 50 VDC however the current output was 4kA. This is quite a massive machine and used early on with the subway. The MG sets I'm familiar with are those used in DC traction elevators.
@alouisschafer721224 күн бұрын
4000 Amps is crazy.
@The_DuMont_Network9 күн бұрын
Researh the 500 KW AM station in Cincinnati. WLW. The filament supply generators were massive. Several KZbin videos. Also the Alexanderson rotary transmitter at Grimeton still fires up several times a year.
@TheRandomGuy5703 ай бұрын
The sound this thing made as it was spinning faster and faster triggered my fight or flight response so badly.
@redsquirrelftw10 күн бұрын
Woah, never occurred to me but that is exactly what that feeling is. It's the same feeling I get when I catch myself in a sleep paralysis, it's like this feeling that something bad is impeding and it's ramping up.
@deborahchesser73757 күн бұрын
@@redsquirrelftw I fired up a V12 Detroit backup generator set for one of the buildings I worked in and she ran away. You should have seen those old fat guys hauling ass lol. I gave her a big hit off a fire extinguisher and shut the flapper and got it shutdown. They all respected me for keeping cool after that.
@petersimms4982 Жыл бұрын
The faster , the quieter it gets 😊
@Shaker626 Жыл бұрын
Electricity only makes noise when things resist
@wdowa94 Жыл бұрын
It's because of overall resonance which is one of harmonics of dynamic impedance frequency (in short xD) and ammount of back EMF of the engine as whole assembly of electromagnets limited by delta-star configuration
@44Kilovolt Жыл бұрын
It gets quieter as it reaches rated speed because the speed of rotor equalizes with the speed of the rotating electromagnetic field of the stator, thus the power demand rapidly decreases to idle load.
@ModelingSteelinHOАй бұрын
Excellent sound capture !
@44KilovoltАй бұрын
Thank you!
@TheMagnificentRaft Жыл бұрын
My heart would definitely stop before this thing reach max speed
@BlueShadow1252 ай бұрын
correction, if you touched the terminals of that, your heart would be deleted in less than a second :)
@heronimousbrapson8638 күн бұрын
I'm reminded of the Raymond Scott composition "Powerhouse".
@davida1hiwaaynet10 күн бұрын
Lovely machine with an amazing startup sound! My question is this.. What is the use of the 2KHz output current? That is an odd frequency output.
@44Kilovolt10 күн бұрын
It is for sure! Unfortunaely all of them have been scrapped as the factory closed down its business for good, and soon it will be demolished. The 2kHz output was used in induction heaters to heat up steel cylinders, which were then processed in hot press forging machines.
@davida1hiwaaynet10 күн бұрын
@44Kilovolt Oh wow, that is a fascinating use of the high power, high frequency power. It's a shame that the plant closed. I do appreciate you explaining the use of the converters, though.
@44Kilovolt10 күн бұрын
@ You're welcome! Check my other vids too if you're interested, I've got more videos of various stuff from the factory ;)
@no-damn-alias Жыл бұрын
My screen dimmed from that inrush current
@psirvent8 Жыл бұрын
Lol
@jannickcst Жыл бұрын
Is there a second one starting up in the background?
@44Kilovolt Жыл бұрын
Yes
@high1voltage1rules4 ай бұрын
What a beast 😉👍🏻 gave me goosebumps 🥰
@44Kilovolt4 ай бұрын
Yeah, starting these up and hearing the aggresive 50Hz startup was always an experience, hoping they wont go boom since this older model was prone to motor failures 😁 But unfortunaely they're all gone now, scrapped. The factory was closed down for good earlier this year 😞
@inductivelycoupledplasma6207 Жыл бұрын
Awesome, what is the unit used for? That's a lot of ULF RF output! Is the output 3ph or single ph? Edit: just realised it's for an industrial induction heater, super cool!
@44Kilovolt Жыл бұрын
It is used to power up induction heaters that heat up usually steel cylinders up to 1250 degrees celsius which are then processed in hot press forges. There used to be 10 units in total few years ago, now there are 5 from which 3 are functional, 1 is being repaired and the other one is currently dismantled due to short in a motor windings, might get repaired in the future.
@inductivelycoupledplasma6207 Жыл бұрын
@@44Kilovolt so awesome to see motor gens being used instead of tubes or transistors. Awesome tech!
@44Kilovolt Жыл бұрын
@@inductivelycoupledplasma6207 Yes, tho we do have a few thyristor static converters too
@44Kilovolt Жыл бұрын
@@MFKR696 Nope that is incorrect in this case, the input is 3 phase 50Hz 6,3kV, the output is 1 phase 2000Hz 1kV.
@WhitfieldProductionsTV Жыл бұрын
well half the us just browned out when this started up.
@SARUS7 Жыл бұрын
stará škola ... a funguje dodnes :)
@blackcitadel37 Жыл бұрын
that's a lot of wall juice needed to make that boy spin
@Cheelex333 Жыл бұрын
What is the pipe dumping water into the funnel on the right?
@44Kilovolt Жыл бұрын
Thats a water cooling of the rotary converter. Its done like that so its clearly visible that the water is flowing. In case the water stops flowing, there is a sensor that will register that and automatically shut down the rotary converter.
@jacknedry3925 Жыл бұрын
God, I'd like to see the contactor(s) when this starts up...
@44Kilovolt Жыл бұрын
I may make a vid of the HV switch turning on
@jacknedry3925 Жыл бұрын
@@44Kilovolt, Please do!
@44Kilovolt9 ай бұрын
@@jacknedry3925 Just published a video of the high voltage breaker :)
@SkyzTh3Limitt6 ай бұрын
Now if an EV could sound like that when brake torquing, I'm IN!!
@pootispiker2866Ай бұрын
Brake torquing? I love it when words don't mean anything
@SkyzTh3LimittАй бұрын
@@pootispiker2866 Brake Torquing is when you hold the brake and the accelerator at the same time in an internal combustion engine car with an automatic transmission to allow the engine to build torque and “get up on the converter" before launching. Google is your friend here. This really doesn't work in an EV since they make max torque at 0 RPM, but it would sound cool if they could. Example. kzbin.infoPnu1UJfpUwc “Just say something to let everyone know, you know nothing” -Someone
@pootispiker2866Ай бұрын
@@SkyzTh3Limitt EV motors don't make induction sounds because they don't use induction motors or frequencies that are loud to our ears.
@SkyzTh3LimittАй бұрын
@@pootispiker2866 Obviously. That artificial humming sound is just the cat's pajamas. I'll take that over a highly tuned ICE any day 🙄. Some of us EV owners still have a soul and are still car enthusiast. You do not appear to be.
@pootispiker2866Ай бұрын
@@SkyzTh3Limitt Relax, I just told you how things are ya sensitive git. You, despite claiming to have a soul, continue to demonstrate living in complete misery. Have you tried being happy? I like cars and I can tell a pretty car apart from a Nissan Rogue. My Chevy Bolt's just a car. I like it, and it does the car thing pretty well. Do I need to put myself up on a soapbox when saying as much? No.
@MenzelMotors Жыл бұрын
we can paint him yellow so he looks like one of us
@44Kilovolt Жыл бұрын
It deserves a new paintjob for sure, but unfortunaely its not up to my decision. The original paint was red base block with cream-white covers.
@TheRealDorran10 ай бұрын
nah Menzel 💀 💀
@jacknedry39256 ай бұрын
@@44Kilovolt, That sounded attractive.
@RaymondSwanson-u9y26 күн бұрын
Warp 6 and increasing!
@CATA20034Ай бұрын
2kHz, is it used for an induction heating/melting?
@44Kilovolt7 күн бұрын
Yes
@tizianob85902 жыл бұрын
Nice! Is that water?? For cooling?
@44Kilovolt2 жыл бұрын
Yes the motorgenerator is watercooled :)
@godfreypoon5148 Жыл бұрын
and drinking
@BobowdyGood6 ай бұрын
This sounds like a straight up death ray on startup
@SalvoZ06 Жыл бұрын
Excuse my ignorance but what is that water you see? Does it serve to cool something?
@44Kilovolt Жыл бұрын
Yes its the watercooling of the rotary converter. Its made up open like that so the water flow can be clearly seen.
@SalvoZ06 Жыл бұрын
@@44Kilovolt Perfect, I understand, thanks for replying🙂🙂
@kurtiunlisted85896 ай бұрын
What’s the 2kHz AC Output used for?
@44Kilovolt6 ай бұрын
For induction heaters
@kurtiunlisted85896 ай бұрын
@44Kilovolt Thanks!
@44Kilovolt6 ай бұрын
@@kurtiunlisted8589 You're welcome :)
@quick75023 Жыл бұрын
How many poles are there and what RPM is used to accomplish 2kHz? The largest one I have installed and maintained was an 800kW 60Hz/60Hz unit.
@44Kilovolt Жыл бұрын
Rotor spins at 1480RPM, so the generator should have 160 poles for 2kHz output
@quick75023 Жыл бұрын
@@44Kilovolt It's an interesting machine. I'm assuming its massive inertia provides the stable frequency output required for efficient induction heating. I've been doing some investigation regarding the process, as I'm unfamiliar with the physics.
@44Kilovolt Жыл бұрын
@@quick75023 Yep, they do have a tremendous inertia indeed. When the rotary coverters are turned off, they usually keep spinning for an half hour before they stop.
@AcvaristulLenes Жыл бұрын
It has integrated Hypnotoad.
@mapf70978 күн бұрын
A pretty old machine that stills lives. At my work, there's something simular for testing purposes. Can you tell us the technical datas, e.gh. rated voltages and hp / kW?
@44Kilovolt7 күн бұрын
Unfortunaely the factory has closed down and the rotary converters were scrapped. Info is in the description.
@gregpallett18398 күн бұрын
This is what electric cars should sound like.
@lukasgayer53939 күн бұрын
What is the little "fountain" for? Is it some kind of indicator that the coolant water is flowing?
@44Kilovolt7 күн бұрын
Yes, its to check visually if the water is flowing. There were also water flow and pressure sensors that would shut down the converter if it went beyond minimum.
@dirtypaws63282 күн бұрын
ARE YOU READY TO ROCK!!???
@e1woqf8 күн бұрын
What is the 1KV@2KHz this converter generates used for?
@44Kilovolt7 күн бұрын
It was used for induction heaters.
@e1woqf7 күн бұрын
@@44Kilovolt Thanks!
@mysock351C4 күн бұрын
The 50Hz sounds much more interesting when seasoned with 2kHz and its harmonics.
@AxelWerner23 күн бұрын
why not using a plain transformer instead?
@44Kilovolt22 күн бұрын
Becase a transformer cannot change output frequency.
@LoganT547Күн бұрын
Damn that startup sound is insane. Probably the angriest sounding motor I've ever heard
@Axman618 күн бұрын
“Mom, can we have THX Deep Note?” “We’ve got THX Deep Note at home” The THX Deep Note:
@tandr3w8 күн бұрын
If Tesla CC could make their cars sound like that, I would definitely buy one.
@CableWrestler8 күн бұрын
This looks like something that should power a vampires house
@Obladgolated8 күн бұрын
50 Hz sounds so deadly.
@44Kilovolt7 күн бұрын
I always thought so. It definitively sounds scarier to me than 60Hz.
@Obladgolated7 күн бұрын
@@44Kilovolt Notice how the 50 Hz hum quiets down once the rotor comes up to full speed; the armature current falls off once the rotor is no longer accelerating. The machine must be running without any significant load; once it's at speed, only friction losses need to be supplied.
@44Kilovolt6 күн бұрын
@@Obladgolated On the startup its running without a load, the only load being the weight of the rotor and friction in bearings
@Obladgolated6 күн бұрын
@@44Kilovolt True, but even the weight of the rotor represents a significant load. I'm sure the rotor weighs at least one or two tons, maybe more. To accelerate that to 3000 RPM in 24 seconds takes a lot of power.
@dieseldragon67562 ай бұрын
What I would give to be able to... 🚵 Have one of these mounted onto my bicycle to drive the rear wheel, and 💪 Have enough physical strength and might to be able to carry a backpack with enough lead cells and an inverter capable of driving it! 😁 I can't seem to stop playing this on repeat right now. It's slightly slower to get up to speed, but it sounds every bit as epic as a TGV TransManche! 🚄🇪🇺❤🔥🤘💨
@clarkelliott538919 күн бұрын
I think I heard that sound in "Forbidden Planet". Were those motors made by the "Krel"? ;
@JustSnapper10 күн бұрын
I wanna see the bushings !
@44Kilovolt10 күн бұрын
Do you mean the insulator bushings?
@PeterFamiko-lw8ue10 күн бұрын
What is the purpose of this machine
@44Kilovolt10 күн бұрын
It converts electricity to different output paramaters than the input parameters. In this case, the input is 6300 volts at 50Hz frequency, and the output is 1000 volts at 2000Hz frequency. The output is the used to power up induction heaters, which heat up metal cylinders that are then processed in hot press forging machines.
@MichaelOfRohan7 күн бұрын
What is it converting? Phase count?
@44Kilovolt6 күн бұрын
Three phase 6,3kV 50Hz to single phase 1kV 2000Hz
@Dschoghurt4 күн бұрын
My Pc at 3 am when I want it to be quiet:
@MarciethegoobАй бұрын
I think i saw the sun dim when that thing started
@canovanthecanman Жыл бұрын
I wanna hear a fast neutron reactor starting up next
@Elyn-co2gr Жыл бұрын
ill use that for my plastic fan rn
@frommarkham424 Жыл бұрын
I thought these things were outdated, why don't they use power electronics instead
@44Kilovolt Жыл бұрын
Indeed they are, but the company wont replace them with static converters due to price cost, lenght of the removal/installation process (bigger half of the production lines wouldnt be able to produce) and probably the old 6kV switchboard would need a replacement too. So yeah, thats a big no for the company. But iam glad that they are keeping such old technology running, it has its own magic. Oh and btw there are 5 static converters too, 4 of them are from 1980's and one is new from 2019. They are just located in a different place than the rotary converters.
@weeardguy Жыл бұрын
@@44Kilovolt And there's reliability. Such beasts like these are close to indestructible compared to power-electronics.
@44Kilovolt Жыл бұрын
@@weeardguy Yes they are durable, but a soft starter would extend lifespan of the motor part. Burn out / short circuits of the motor windings were quite common during the startup as its the most critical part during the operation of the rotary converter.
@Allan_aka_RocKITEman Жыл бұрын
*_Impressive._*
@igorbondarenko5077 Жыл бұрын
мне интересно сколько в этом мотор-генераторе ампер?
@44Kilovolt Жыл бұрын
When the motor generator is starting up, it takes more than 150A from the 6.3kV line.
@quick75023 Жыл бұрын
@@44Kilovolt The 800 kW MG unit I mentioned in another comment string had a 50 HP pony motor that provided initial rotation on startup. The starter on the mains was energized as the pony motor dropped out. The unit was used in a data center application, and a bypass circuit was wired to the control cabinet. The unit output breaker and the bypass breaker had motor drive mechanisms. If the unit failed, the breakers would operate in the 500 milliseconds before the frequency of the MG decayed below 60 Hz. This was back in the days of TTL control, and the logic worked quite well.
@44Kilovolt Жыл бұрын
The inrush current is 400A from 6,3kV line
@Backyardmech19 күн бұрын
I remember seeing pumps all over plants and refineries where I wanted nothing to do with them restarting. I’m not against the sparkies wiring them, but the idea of I smell weird smells and that miniature potential nuke setting things off while I’m doing my thing.
@44Kilovolt7 күн бұрын
The older type units, like the one in the video was prone to motor failures on startup. From what i heard from former co-worker, it could do a seriously loud bang.
@JCarey1988 Жыл бұрын
What's with the water fountain?
@44Kilovolt Жыл бұрын
Its watercooling drain, it is made visible like that so the operator/maitenance can cleary see that the water is flowing. If water stops flowing or the flow pressure is too low, the pressure switches will trip the high voltage breaker and rotary converter will stop.
@RandomKerbalizedGuy8 ай бұрын
Basically my lawn mower but bigger.
@krillin6326 күн бұрын
i think you got the output stats backwards 🤔
@44Kilovolt25 күн бұрын
Nope, they're correct. The generator output can be connected in two ways, either to get 1kV 500A output (which was used) or 500V 1000A output.
@michaelcorlet2998 Жыл бұрын
A real motor for real men.
@psirvent8 Жыл бұрын
Heck yeah !
@markdi211 ай бұрын
What does it do
@44Kilovolt11 ай бұрын
It converts high voltage 6300V low frequency 50Hz to lower high voltage 1000V medium frequency 2000Hz which is used in induction heater. Induction heaters do heat up steel cylinders (usually) which are then forged in forging presses.
@markdi211 ай бұрын
@@44Kilovolt thank you
@44Kilovolt11 ай бұрын
@@markdi2You're welcome
@Olliethelabradane8 күн бұрын
❤
@ZillaCraft-6pu73 ай бұрын
Elon Musks SpaceX ship starting up [LIVE]
@michaelhamilton3778 Жыл бұрын
Just the startup sounds alone, made me poop a little 😳😶
@Acoustic_Theory7 ай бұрын
Eventually it just makes sense to pay for the three phase electric service.
@theLuigiFan0007Productions13 күн бұрын
This is actually a very special converter, it's purpose is to output 1 phase power, with a twist. That being It changes the line frequency to 2000Hz for a induction smelter. It's certainly cheaper to use a spinning thing than huge set of inverter banks with loads of power transistors or FETs to do that.
@44Kilovolt7 күн бұрын
@@theLuigiFan0007Productions And back in the 1960's there was no other option than using rotary converters. Such semiconductor converters were being made since early 80's here with GTO thyristors.
@theLuigiFan0007Productions7 күн бұрын
@@44Kilovolt Indeed. And often the DC for things like electric trains was provided by Mercury Arc Rectifiers. The 3 and 6 phase ones look like a glowing blue octopus when in operation. Always very interesting to research the origins of various technology.
@44Kilovolt6 күн бұрын
@ Getting a 3 phase mercury rectifier has been on my wishlish for several years.
@theLuigiFan0007Productions6 күн бұрын
@@44Kilovolt It would be so cool to see one in person. I gotta find somewhere that's exhibiting one sometime.
@Damien.D11 күн бұрын
Who needs 1kV at 2kHz?
@44Kilovolt11 күн бұрын
@@Damien.D Induction heaters
@tomg19565 күн бұрын
Chuck Norris could stop that with one hand
@kluculda15 күн бұрын
K čemu tohle sloužilo- myslím konkrétní aplikaci, princip znám 🙂
@44Kilovolt14 күн бұрын
Rotační měniče napájely indukční ohřívačky, ve kterých se ohřívaly ocelové kusy na požadovanou teplotu a následně se zpracovávaly v kovacích lisech :)
@kluculda14 күн бұрын
@@44Kilovolt díky. Tak i proto ta frakvence a jiná videa s motory kovárny. Díky. Teď už vše zrušeno?
@44Kilovolt12 күн бұрын
@@kluculda Není zač. Bohužel měniče jsou už dávno ve šrotu, v kovárně se se řeší poslední demontáže zařízení, v dubnu by se měla začít bourat.
@kluculda12 күн бұрын
@@44Kilovolt takže areál označovaný jako Nová Zbrojovka za Tomkáčem?
@44Kilovolt12 күн бұрын
@@kluculda Nene, je to areál Zetoru u Stránské skály.