I was a reactor operator for a number of years. Our plant had three 8000 hp 13.8kv feedwater pumps, with step-up gearboxes to run the pumps at over 4000 rpm. Full power operations required all three pumps, as the reactor consumed feedwater at around 450 gallons per second.

I have participaded in the electric construction of this shredder by Metso Lindemann. The video makes a perfect description of the shredder start. Thanks very much.

I work on machines and motors this size daily and I will say it’s impressive. Love the huge applications in the mills too

Brilliant video. Very nice set up.

Excellent video.

BaddAss video, thank you!

Greetings my friend just a note to let you know how much I appreciate not just your work but the ability to see these great machines! I noted that untill the process began just how quiet and smooth the big motor is! Thank you! 🐯🐯🐯🐯

@YvesMamin

2 жыл бұрын

Many thanks for your comment

Very interesting. Thanks for posting this. Have a nice day now.

@jaydenstevens6782

3 жыл бұрын

horses1708

2:55 You sir have got WAY bigger balls than I do. You couldn't pay me enough to stand next to that shaft while it was running, much less underneath it.

@YvesMamin

4 жыл бұрын

The danger is not there. The most dangerous is the projection of pieces of metal during grinding. Access to the perimeter of the crusher has been prohibited recently during grinding.

@Steve211Ucdhihifvshi

2 жыл бұрын

One of the mills here in brisbane would regularly blow up. The idiots would shred flamable stuff and bam. Massive fires and explosions .

@rovhalgrencparselstedt8343

Ай бұрын

@@Steve211Ucdhihifvshi Like car wrecks that did not have the fuel tank emptied and such ? I think i've seen a car shredder video where that happened once a long time ago during the early days of youtube, or back so long ago that you had to download the video file and watch it.

The scene switches right when they get to the car...

@KutWrite

3 жыл бұрын

I'd have liked to have seen that, too. Shades of "Goldfinger!"

not sure which one are music and which one are the coil vibration sounds, honestly. But super cool details shown! I love this vid

I worked as a welder at the old Sternoff Metals on the Hammer Mill . Also the copper chopper . Was located in Renton Washington . Removed and sold to China in 1982

@YvesMamin

3 жыл бұрын

More know-how that disappears...

Nice startup

Nice atmosphere!

good video !!

hammer crusher~감사ขอขอบคุณआपका धन्यवादСпасибоThank youMerciObrigadoありがとう～。

Awakeninggggggggggggggg

Woah that's pretty skookum. Would be cool to see the actual crushing part though is it basically like a giant shredder?

@KutWrite

3 жыл бұрын

Yeah, I'm gonna search for that.

@ostracizedelite5096

3 жыл бұрын

Skookum... AvE slang in the wild

@generalx5220

Жыл бұрын

Skookum is a Canadian thing

I wish i had that much scrap in rust...

Me: "How did the motor spin up so fast? Oh- hydraulic coupler."

@YvesMamin

Жыл бұрын

Just, the motor starts idling without load and then the coupler gradually starts the crusher drum.

I always thought that, based on the giant size of the motor and hammer-rotor, that the driveshaft from the motor was directed! All torque from the weight of the rotor hammer.

@YvesMamin

2 жыл бұрын

With a speed of only 600 rpm this 1500 kW motor has enormous torque. Standard motors normally run at 1500 or 3000rpm

ABB made the commuter trains in my city as well, cool

Finnish build the biggest crushing machines in the world...

Living just next to Ecublens… now I wonder where this is… 🙂

So how is the hydraulic coupling engaged and disengaged? Adding fluid to the coupler until it transfers more and more torque? By the way is it just a plain hydraulic coupling or a torque converter?

@YvesMamin

3 жыл бұрын

This is a hydraulic coupling with progressive loading. Do not know the construction detail. Some more info here (TV type: with delay chamber): voith.com/uk-en/products-services/connection-components-couplings/fluid-couplings.html?120475%5B%5D=1

@mibars

3 жыл бұрын

@@YvesMamin Thank you, I've read a bit about them and these are clever little machines on it's own: They are partially filled, self-contained and fully automatic couplings with a so called "delay chamber" which stores some of the fluid away from impeller and turbine and once the speed increases more and more fluid is forced into working chamber allowing more torque to be transmitted.

@woodyjumps

Жыл бұрын

The pipes under the coupler, and the housing appear to be the type that is controlled by being remotely filled and constantly draining to control the fill level. The oil is sent through filtration and cooling. This would be typical for such a large machine. The self contained versions have poor behavior when a machine is overloaded, which is common with hammer mills processing steel scrap. In the self contained ones the oil gets hot quickly when over burdened... they are cooled by convection, and would not be closed in a housing like this.

@rovhalgrencparselstedt8343

Ай бұрын

@@woodyjumps Yes that makes perfect sense as the hydraulic fluid would get boiling hot and risk getting burnt and wasted if not continously circulated and atleast cooled.

@woodyjumps

20 күн бұрын

@@rovhalgrencparselstedt8343 The type having a closed housing, with no circulation, are fitted with thermally activated plugs which open and spill out their oil if they get too hot. They can also be fitted with a pop up sensor which will trigger a switch that shuts off the motor.

Das gut. ABB

@SuraLeo

3 жыл бұрын

Abb is short for Asea (Allmänna svenska elektriska aktiebolaget) Brown Boveri

Ooh Swedish quality! Hägglunds is a good Electric motor brand and i have lots of motors from them in my factory

@YvesMamin

4 жыл бұрын

Yes, but...... this one is Swiss (see the plate at 01:15)

@theodorranebo2909

4 жыл бұрын

@@YvesMamin I did not mean the ABB motor, i mean the hydraulic motors with Hägglunds stamped on them

@YvesMamin

4 жыл бұрын

@@theodorranebo2909 hadn't paid attention to this detail !

Gamako Shredder. I but that thing eats whole cars and trucks too.

Do you know about the voith coupling hydraulic circuit and powerpack attached with this motor.

@YvesMamin

Жыл бұрын

The motor power unit yes, but not the hydraulic part

@saimbhi20

Жыл бұрын

@@YvesMamin is the motor started first?

about 2,145 HP, that'll do some damage. :)

not a warning sticker in sight

Das Auto

So what is a "star start"?

@YvesMamin

5 жыл бұрын

without going into the technical details, the coupling of the winding resembles a star when it is drawn, three branches at 180 ° and a common point in the middle.

@e1woqf

5 жыл бұрын

@@YvesMamin: 120° !

@YvesMamin

5 жыл бұрын

Oops! not seen my stupidity

@checkyoursix5623

5 жыл бұрын

Three phase motor has two leads for each phase winding brought out to the pecker head. Sequential timed action of two mechanically-interlocked contactors connect the windings in a "wye" (Y) configuration for a few seconds (START), then the first contactor opens, and the second contactor connects the windings in a "delta" configuration for "RUN". The starter has two three-phase contactors and a timer.

@justme5384

4 жыл бұрын

And just to tell why using a star starter and switching to delta is because at star the motor only takes 1/3 of needed amps to start. But also only puts out 1/3 of power. Then it switches to delta and it has full power. Google star/delta starter

6000*184=1104000wt.???

@YvesMamin

5 жыл бұрын

Ваш расчет правильный, но неполный Вы не учитываете 3 фазы (корень 3) и косинус (0,82). Расчет составляет 6000 х 184 х 1,73 х 0,82

Why star-delta? We have 8 1050kW 6kW motors at work and i start directly with load (around 15% of load). (dedusting unit fan) Start up current its about 300A, idle current is 80-100A and under max load is 145A :-)

@YvesMamin

3 жыл бұрын

In practice there is no problem for a direct start. However, in Switzerland, electrical regulations require a soft starter or star-delta coupling for any power greater than 4kW.

@StakrCZ

3 жыл бұрын

@@YvesMamin lol :D ok thanks

@TurboVisBits

3 жыл бұрын

@@YvesMamin the wonders of regulation making for stable power grids. :-)

@emanuele933

3 жыл бұрын

I'm wrong if i say star delta gives less stress on the electrical? Contactors, cabling and maybe the engine..?

@StakrCZ

3 жыл бұрын

@@emanuele933 sure, but if the motor is operating in a delta connection, then the in star connection has less power.

bruh