@@PanferriDPMO different electrical connection types for motors. One is shaped like a Y the other more a triangle. They have their own benefits and reasons for being used
@@PanferriDPMO TLDR: star uses lower voltage to start spinning the motor slowly, in order to prevent a power load spike, then delta gives the motor full power once it is already spinning. This is a 3-phase motor, which is typically used for higher power devices in industrial settings. Instead of the normal single split phase that you get delivered to your home (in North America) across 3 wires (L1, L2, grounded neutral), you get 3 lines (L1, L2, and L3, or T1,2,3) meaning you can carry more power with the same amount of wire used in a single phase system, as well as configure loads such as electrical motors to receive different voltages based on how you wire them. Electric motors like the one in this video have 3 copper windings (or big coils of wire wrapped around iron), meaning 6 connection points (2 ends per each winding of cable). There are two main methods of wiring 3-phase electric motors which involve connecting the 3 input power leads and 6 motor winding leads to each other: star (aka. wye), and delta. With star, one end of each of the 3 windings are all connected together, and the 3 input phases are connected at the other end of each winding, which only powers the motor at 1/3rd of the rated power, allowing it to slowly start spinning. If it was immediately connected to high voltage, it would cause a huge load spike on the power grid. Once the motor is running on lower voltage (star/wye), it is automatically switched to a delta wiring configuration which provides full power to the motor and will not cause a huge load spike because the motor is already spinning. In the Delta wiring configuration, the end of each motor winding is connected to the start of the next, with one of the three input phase wires connecting at the start/end of each winding. Because of the 3-phase power, you can get these two different voltages from the same 3 phase conductors coming in from the power grid just by re-arranging the way the motor is connected to the incoming power. The device which automatically does this is a star-delta motor starter. You can also reverse the rotation of a 3-phase motor by switching the order of the input power wiring. The motor wiring diagram will usually give you directions on how to wire the motor. 3-phase motors also are self-starting, meaning they do not need a capacitor or special start windings like single phase motors do, which makes them simpler and with fewer components which could fail, which is why 3-phase power is used in industrial settings like in this video.
@@Snowcube what's there to be afraid of? It's just air. There are no moving or mechanical parts behind the grills in the pool, just a chamber with an exhaust pipe for the air to be released
Any one noticed, it switches to delta far to early. You can hear the change with the sudden increase of torque slipping the belts when the speed increases. needs to back off about another 3 or so seconds!
That is because the fan makes pressure in the tube, but the ventils to let the air into the pool are closed. when maximum pressure in thr tube is reached, the fan can't press more air inside, so it turns slower and the belt slips until the air can go into the pool.
Despite never seeing the inner workings, that noise alone brings back memories. "I can hear it starting up" everyone says as they all rush to the best wave spot of the wave pool.
I have never heard this noise usually when I’m at a wave pool a loud buzzer goes off which I’m guessing drowns out the sound but if I do go back to one I will stand near it when it starts and I might be able to hear it
Thanks so much for posting this! I was always fascinated by these as a kid, and spent the last 30 years wondering what the mechanics were (being a repressed engineering graduate). Well it's all surprisingly simple really! I have fond memories of a wave pool in Fulham, UK, but I think it has long since closed down :(
Same. I almost drowned in the wave pool at Surf Cincinnati when it first opened up. They used the pivoting walls to push the waves & the power was immense. You'd get sucked toward the grates & there was no way to get out. I think thru the years several others got hurt & to my knowledge it's long defunct now.
@@Qui-9 Plot twist: That fan in the room he was in was actually used to cool that server in there because they were trying to run a bunch of Flash apps
We have only 1 blower system so when the motor burned out, customers were "happy"...the biggest problem was to get the motor out from machineroom so there are stairs and motor have 500Kg.
I think I was afraid of things like this as a child because of the noise and I didn’t know how it worked. It seems to have evolved into a machinery fascination as an adult.
You'd get plenty warning though. All if not most swimming pools have a 5-second alarm note to let swimmers know the wave machines are about to switch on... then a further 5 seconds before the motor kicks in. :)
@@RediffusionMusic wow i would want more than 5 seconds... seems like that's when people are gonna check in with themselves and realize they can't handle another round and need to get out
@@spambot7110 Possibly control electronics you might be right. I can see patch panels in there so to me looks like a networking cab. But its in a room that would be off limits to the public and most likely locked at all times. Makes a great place to have network, cctv or control system equipment quite frankly.
+E-Z Arch Project Yes, easy to turn off hearing aids. I use them. But turning them off will not save your ears if you still subject your ears to loud noise. I've learned that a little too late.
I’ve been in a room with 6 of these firing up at once. Never thought I’d be feel that childhood fear of sound as an adult. The sound and pressure shake you to the core.
One time in Florida, I was swimming in the deep end of the wave pool because the rope was weirdly positioned all the way back, and I was able to hear the “hsshph-hssph!” of the pistons opening and closing. The door to the plant room was also open for some reason, which made the sound even louder, but even after they closed the door, I was still able to hear it. Like many industrial and mechanical things, wave pools do fascinate me.
Okay so the large fan (air compressor) is above the surface water level in a room nearby. The pipes you see run out of the room and down to the pool. The pipes run right into the water of the pool. Typically the pipes are near the deep end and are concealed or obscured. When the wave generator is off, the pipes have an arbitrary amount of water within them. When turned on, the fan compresses a ton of air into a small volume creating high pressure. This pressure is so strong that it travels through the pipe down to the pool. Once the compressed air hits the water in the pool, it slams into the water pushing it down the pipe and out into the pool. The displacement of the water in the pipe creates the wave movement of the water. Hope this answers your question.
@@UltimateAlgorithm no. they are pneumatic, electrically operated valves that let the pressure vent, water rise, and then close so the pressure sends the water back down. its like having a water bottle, throwing a straw in it. when blowing in it, the air goes out the exposed top and there is essentially no pressure in the bottle because it is venting. Put your thump over the excess opening with the straw in, and now blow. Pressure will build and push against the walls of the bottle, trying to get out. now i got to go to bed, its like 2 am. hope this helps.
@@UltimateAlgorithm yep! Thats their purpose. Without them, there would just be one wave, and then the water would be offset, because no way in hell are you getting the motor to do the switching.
Fun fact: In some wave pools you can actually hear the fan if you just go under the water while the big waves are there. (you'll be under the water alot incase you've never been in a wave pool btw)
I once was at a wave pool and went to the holes with those bars in front of them, somehow I was intirigied to see if I can see whats actually making those waves so i went under. I heard the breathing sound, and got spooked like shit😂 never was so scared, never went to those holes again in that pool 😂
I was thinking “how the heck does a wave machine involve an air fan?” but conveniently the next recommended video is “how wave pools work” so looks like I’m about to find out!
Good idea, I must sometimes walk across the wave machine room into next machine room where we have pumps, filters etc. when fan is running. Not very funny :D
I never really knew how wave pools worked, but now I do. You just generate a s*itton of air using an overpowered blower fan and then use some pneumatics and vent flaps to switch air inputs every second. That air then gets blown onto the water, creating waves.
0:01 Starting up motor in STAR mode
0:07 Switching to DELTA mode
0:11 Reaching cruise speed
whats star mode and delta mode?
@@PanferriDPMO different electrical connection types for motors. One is shaped like a Y the other more a triangle. They have their own benefits and reasons for being used
0:15 reaching light speed
at least we know it's not normal to sound like this from the comments
@@PanferriDPMO TLDR: star uses lower voltage to start spinning the motor slowly, in order to prevent a power load spike, then delta gives the motor full power once it is already spinning.
This is a 3-phase motor, which is typically used for higher power devices in industrial settings. Instead of the normal single split phase that you get delivered to your home (in North America) across 3 wires (L1, L2, grounded neutral), you get 3 lines (L1, L2, and L3, or T1,2,3) meaning you can carry more power with the same amount of wire used in a single phase system, as well as configure loads such as electrical motors to receive different voltages based on how you wire them. Electric motors like the one in this video have 3 copper windings (or big coils of wire wrapped around iron), meaning 6 connection points (2 ends per each winding of cable). There are two main methods of wiring 3-phase electric motors which involve connecting the 3 input power leads and 6 motor winding leads to each other: star (aka. wye), and delta. With star, one end of each of the 3 windings are all connected together, and the 3 input phases are connected at the other end of each winding, which only powers the motor at 1/3rd of the rated power, allowing it to slowly start spinning. If it was immediately connected to high voltage, it would cause a huge load spike on the power grid. Once the motor is running on lower voltage (star/wye), it is automatically switched to a delta wiring configuration which provides full power to the motor and will not cause a huge load spike because the motor is already spinning. In the Delta wiring configuration, the end of each motor winding is connected to the start of the next, with one of the three input phase wires connecting at the start/end of each winding. Because of the 3-phase power, you can get these two different voltages from the same 3 phase conductors coming in from the power grid just by re-arranging the way the motor is connected to the incoming power. The device which automatically does this is a star-delta motor starter. You can also reverse the rotation of a 3-phase motor by switching the order of the input power wiring. The motor wiring diagram will usually give you directions on how to wire the motor. 3-phase motors also are self-starting, meaning they do not need a capacitor or special start windings like single phase motors do, which makes them simpler and with fewer components which could fail, which is why 3-phase power is used in industrial settings like in this video.
Imagine being down there at night alone and it turns on automatically
SingingPigeon And in the dark 0.0
+UNIX Nerd He did an overnight challange in a water park so that kinda counts!
SingingPigeon right though
My worst nightmare in a nutshell.
@@Snowcube what's there to be afraid of? It's just air. There are no moving or mechanical parts behind the grills in the pool, just a chamber with an exhaust pipe for the air to be released
Any one noticed, it switches to delta far to early. You can hear the change with the sudden increase of torque slipping the belts when the speed increases. needs to back off about another 3 or so seconds!
That is because the fan makes pressure in the tube, but the ventils to let the air into the pool are closed. when maximum pressure in thr tube is reached, the fan can't press more air inside, so it turns slower and the belt slips until the air can go into the pool.
which means too early
Aeralius Co no. the pneumatic is starting too late. it would be the same the motor would start slower.
The only thing i know. Something isn't completly right.
I'm sorry, but I have never met a group of bigger nerds in my life xD what course do you have to study to know this stuff?
I think a few more seconds in star-mode before switching to delta-mode would prevent the motor from burning out...:)
That was the belt slipping, I think PWM or soft start would be good
Yeah the sound is the belt slipped
It’s probably fine
Soft starte
@@xa-12exehasstopedworking29 “it’s probably fine” things people say moments before disaster
Despite never seeing the inner workings, that noise alone brings back memories.
"I can hear it starting up" everyone says as they all rush to the best wave spot of the wave pool.
I have never heard this noise usually when I’m at a wave pool a loud buzzer goes off which I’m guessing drowns out the sound but if I do go back to one I will stand near it when it starts and I might be able to hear it
As a man with an irrational fear of ductwork and fans, this is incredibly uncomfortable to watch.
I don’t like exposed range fans or whole house fans. Pretty scary.
pool vacuums for me, so this kinda fits
i dont have that fear but looking and listening to those valves close is really creepy
I'M NOT ALONE!
@@aaron71 srsly its like some creepypasta
This thing sounds like something from Black Mesa
i agree
Power to stage one emitters in 3... 2... 1...
в игры многое взято из реальности)
Its not... its not shutting down, OH NOOOOOO
Gordon!
Thanks so much for posting this! I was always fascinated by these as a kid, and spent the last 30 years wondering what the mechanics were (being a repressed engineering graduate). Well it's all surprisingly simple really! I have fond memories of a wave pool in Fulham, UK, but I think it has long since closed down :(
The noise of it starting up and running gives me chills. I am terrified of wave machines and this noise makes me feel really uneasy
okay am i the only one who looks at these things with pelasure
Same. I almost drowned in the wave pool at Surf Cincinnati when it first opened up. They used the pivoting walls to push the waves & the power was immense. You'd get sucked toward the grates & there was no way to get out. I think thru the years several others got hurt & to my knowledge it's long defunct now.
My pc fan when i open 1 chrome tab: 0:01
When i open 2 tabs: 0:07
3 tabs: 0:09
whahaha oldscool pc i love them
My PC fan's belt screeched when too many Flash apps loaded...
@@Qui-9 Plot twist: That fan in the room he was in was actually used to cool that server in there because they were trying to run a bunch of Flash apps
Omg 😂😂😂😂😂😂😂
At 0:07 the motor switched from a star connection to delta.
0:09 when a 9 year old asks his mom to buy him 10,000 vbucks and she says "no".
Idk why the blower screamed like e-brake
We have only 1 blower system so when the motor burned out, customers were "happy"...the biggest problem was to get the motor out from machineroom so there are stairs and motor have 500Kg.
I have a question how can start the blower fan
@@michelscully6287 you push the start button
Ykw is not real
This is just amazing to watch this machinery run, wave pool fans I love the most, that start was the dopest ever
Is that a Tigercat catching fire on your DP?
0:09 drift XD
Déjà vu
**plays running in 90s**
Fan belt slip
*I always feel that large and loud machines scare me.. i don’t know why-*
Same, I have an inherent fear of large amounts of tubing, wiring, or machinery.
I had that fear too but then i started working in that field and now fascinating
@@silverinsignia1320 electrotechnical engineering
I think I was afraid of things like this as a child because of the noise and I didn’t know how it worked. It seems to have evolved into a machinery fascination as an adult.
Me too.
This music gives me so much nostalgia, such a good choice!
I feel bad for anyone working on that network cab and suddenly that star-delta motor fires up. Would scare the shit out of me!
You'd get plenty warning though. All if not most swimming pools have a 5-second alarm note to let swimmers know the wave machines are about to switch on... then a further 5 seconds before the motor kicks in. :)
@@RediffusionMusic wow i would want more than 5 seconds... seems like that's when people are gonna check in with themselves and realize they can't handle another round and need to get out
is that just some network rack? i assumed it was control electronics
@@spambot7110 Possibly control electronics you might be right. I can see patch panels in there so to me looks like a networking cab. But its in a room that would be off limits to the public and most likely locked at all times. Makes a great place to have network, cctv or control system equipment quite frankly.
Have been scared shitless by a building air compressor kicking on while a switch enclosure
UA-cam recommended brings us here.
this reminds me of the pump machines in portal 2 when you start them up lmao
Yes
same lmao
Never appreciate noise until you been inside a room with one of those
+E-Z Arch Project Yes, easy to turn off hearing aids. I use them. But turning them off will not save your ears if you still subject your ears to loud noise. I've learned that a little too late.
You want to try and be in a room with a Vickers Petter Twin cylinder Diesel engine!!
They don't even try to dampen the noise with fibreglass. Most noisy places don't bother.
I’ve been in a room with 6 of these firing up at once. Never thought I’d be feel that childhood fear of sound as an adult. The sound and pressure shake you to the core.
WHAT? PLEASE SPEAK UP!
Those grates were always terrifying to see in the pool but now that I see what’s behind them it’s even worse
Its only air😂
Yeah I used to be absolutely scared to death of those massive grates lol
Yeah its that fear that it will accidentally suck you into the pipes yeah no im not getting close to it xD
0:09 that sounds like my car in the morning
And then the fun begins!! 🌊🌊🌊
This is where the fun begins!
One time in Florida, I was swimming in the deep end of the wave pool because the rope was weirdly positioned all the way back, and I was able to hear the “hsshph-hssph!” of the pistons opening and closing. The door to the plant room was also open for some reason, which made the sound even louder, but even after they closed the door, I was still able to hear it. Like many industrial and mechanical things, wave pools do fascinate me.
0:09 RIP Headphone users...
Wow, felt like my soul was about to leave my body when the noise at 00:07 kicked in xD
This is the sound I make when I can't have pizza rolls.
Literally
Mhm
0:06 VTEC Kicked In Yooo!!!!!!!
What actually prevents water from going down the pipes into this room ?
Okay so the large fan (air compressor) is above the surface water level in a room nearby. The pipes you see run out of the room and down to the pool. The pipes run right into the water of the pool. Typically the pipes are near the deep end and are concealed or obscured. When the wave generator is off, the pipes have an arbitrary amount of water within them. When turned on, the fan compresses a ton of air into a small volume creating high pressure. This pressure is so strong that it travels through the pipe down to the pool. Once the compressed air hits the water in the pool, it slams into the water pushing it down the pipe and out into the pool. The displacement of the water in the pipe creates the wave movement of the water. Hope this answers your question.
@@michaelstanko5896 so the valve openings are water pushing back air on the upstroke of the wave?
@@UltimateAlgorithm no. they are pneumatic, electrically operated valves that let the pressure vent, water rise, and then close so the pressure sends the water back down. its like having a water bottle, throwing a straw in it. when blowing in it, the air goes out the exposed top and there is essentially no pressure in the bottle because it is venting. Put your thump over the excess opening with the straw in, and now blow. Pressure will build and push against the walls of the bottle, trying to get out.
now i got to go to bed, its like 2 am. hope this helps.
@@davidtheawesomeone5358 ah, so these valves can be used to control the frequency and shape of the wave? Since they are actively controlled.
@@UltimateAlgorithm yep! Thats their purpose. Without them, there would just be one wave, and then the water would be offset, because no way in hell are you getting the motor to do the switching.
UA-cam: Wanna watch this?
Me: Sure, why not? I would never got the idea of watching a wave machine by myself!
is anybody else terrified of these?
Fun fact: In some wave pools you can actually hear the fan if you just go under the water while the big waves are there. (you'll be under the water alot incase you've never been in a wave pool btw)
My mom told me that you can hear the wave machine at our local wave pool here in Myrtle Beach.
I once was at a wave pool and went to the holes with those bars in front of them, somehow I was intirigied to see if I can see whats actually making those waves so i went under. I heard the breathing sound, and got spooked like shit😂 never was so scared, never went to those holes again in that pool 😂
I was thinking “how the heck does a wave machine involve an air fan?” but conveniently the next recommended video is “how wave pools work” so looks like I’m about to find out!
The air fan pushes air into a large chamber, pushing the water level down and out the chamber forcing up a wave.
@@PalmPeakMarketing Yeah. That’s what the following video taught me. Thanks.
Ok lol
Man that's a swimming pool!
Might make this my new alarm sound, so I stop sleeping in.
0:01, my pc on startup
OK
@@Emergencylightingcollector42 2 years ago.
Wow i didn't know we have this in Slovakia:)
anyone here from logans bkt
Yes
I am, but I’ve seen this before.
Yes
Y’all this perfect for my Dodge Charger..😂
0:01 Starting the fan motor up in STAR MODE
0:07 Switching to DELTA MODE
0:11 Fan motor reaches full speed
Sounds like a living beast
The wave things opening and closing look like solenoids on a 3t22 tornado siren opening and shutting
Or like a big blower duct on a supercharger
Sounds like the Portal 2 pump station starting sound...
Who knew you needed such a big motor!
Very entertaining and fun to watch. Thanks for posting this.
Love how those shutter things were moving in rhythm.
WOW IT RUNS SO QUIET
0:09 Hondas at 3A.M.
Have you somewhere video from inside of the chambers? It sounds interesting.
I have a question how can I use to start the wave machine room
I think we need to introduce these to nascar so that they don’t have to use the jet dryer
Pneumatic should start before blower, and nine seconds in star is the minimum before delta with this size of fans.
Good video i tryed getting my local swimming pool one working but thay dont look after there stuff so it dint work lol
When the engine finishes starting, it makes a noise that looks like when a car burns a tire xdddd
Sounds like the capital ship annihilation beam is ready to fire
this machine... it breathes...
*_that escalated quickly _*
Wow that’s what a wave pool machine looks like
This is actually terrifying. I would never want to be in that room
It's similar to an AHU room
It’s not that bad I just scare u a little bit if it switches to delta mode 0:07
Sounds like my PS4 trying to run Cyberpunk
0:17 ayyy Macarena dance
Heh?
@@fototoestelletje the things that are flipping is doing the Macarena dance
Cs8 ends
3T22
I even had to turn it down for a moment ... crazy that I should say that to a motor start video ;-)
UA-cam recommendation: Here's 31 seconds of pure ear blasting sounds.
Therapist:all dreams have meaning!
My dreams:
Logan I don't know whether I should be mad, disappointed, or proud
Elevator traction motor and Locomotive aren’t scary for me but this thing is
It's the same as in an AHU room without the sound attenuators
so freaking simple. i love it
Just like a subway train's sound.
Good idea, I must sometimes walk across the wave machine room into next machine room where we have pumps, filters etc. when fan is running. Not very funny :D
I have a question about this how can I use to start the machine
I never really knew how wave pools worked, but now I do. You just generate a s*itton of air using an overpowered blower fan and then use some pneumatics and vent flaps to switch air inputs every second. That air then gets blown onto the water, creating waves.
Yo nostalgia still hits like a truck
That’s an amazing sound!
sounds like a320 cfm engine in cruising
So satisfying
Imagine going to the bathroom at night and you hear this sound.
Yes, the company name is Murphey's Waves. You could't stay in machineroom longer than few seconds because the fan is very loud.
bystrik91 I have a Question how can I start the machine
@@michelscully6287 you can't
Brilliant !
There must be loads of these in the sea! It's always wavey.
Idk why this was in my recommended but I do love mechanical noises
So that’s how wave pools work
Sounds like me booting my PC into safe mode
The bathroom fan you need after you eat at Taco Bell.
i need that blower because my room is hot as heck
Just imagine lol
sound like a space ship going to space wrap
This is what my old windows xp computer used to do when i turned it on
RUNNIN GOOD BOB 👍👍 NICE WORK
0:07 sounds like a Tesla going in full speed
0:06 vtec kicks in
0:09 some wheel spin
Sounds like some kind of spaceship
Every body gangsta till the fan sounded like a jet
This sounds like the one in my house 😅
This what my brain sound like in the morning
Sounds a bit like the gel pumps from Portal 2
Sounds just like my costa sander at work when it starts up.
Damn sick burnout
I didn't know vtec could kick that hard in a electric motor
Those belts will last a lot longer if you delay Y→∇ mode for a few more seconds. I hope they are multiple-belt systems.
so this is where the sound for the Windows 95 pinball "Space Cadet" game came from...
nice butterfly flaps how fast dose it go lol
0:28 cool mechanical work on moving vents kinda scary 😱
0:06 VTEC just kicked in YO!