Why power supply frequency is only either 50Hz or 60Hz?? Easily explained!!
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- Опубликовано: 24 авг 2024
- Why the standard frequency is either 50hz or 60hz ? (Being 50hz in Britain, India and many other countries whereas it is 60Hz in America) Why not any other value?
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If I had you as my math teacher, I would have learned so much more early on. Thanks for this!
In NZ we use 440v 50 htz 3 phase street distribution allowing 10% volt drop 5% to your point of supply/ boundary 2.5 % to your MEN board and 2.5% to point of use. Nominally (400-40)/square root of 3. In my house the voltage must of the time is around 236Ac . The cycles are counted each day and adjusted to always average exactly 50 Hz, or 50 x 3600 x 24 cycles per day so syncronis clocks dont need to be adjusted ever.
Each house gets one phase in towns and 1 or2 or 3 phases in country rural areas.
Thank you for this video, Electrical properties where never explained like this back in school especially in Physiscs class. We also never discussed Ohms law nor how toread a diagrams symbols. They were considered technical vocation training and we were only taught entry general theory and properties. Great work and please post more videos like this!
So to make the frequency stable, in power station, they need a sensor to track the rotation of the turbine to make sure it always rotate in 3000 or 3600rpm no matter when the power demands high or low, thus the frequency not changing.
Excellent penmanship
Thanku
In the early days of electricity, America had frequencies of 25, 40, 50, 60, 100, and 133 cycles and voltages of 110v and 220v
We still frequently use voltages of 110 and 220 but why the different frequencies back then this seems hard to create all those different frequencies
@@jordanhowell3870prior to the 1920s, the United States had no voltage or frequency standards, and the supply was dependent on whatever the relative power station was producing. The country shored this up when they settled on the 240/120v split phase system we use today.
@@jordanhowell3870for example, in the 1900s, Westinghouse generators were producing electricity at 133Hz, whereas the Niagara Falls station delivering electricity to Buffalo, NY were producing it at 25Hz.
Electrical supply from Edison’s original station c. late 1870s-1880s produced 110vdc, which dropped to about 100v by the time it reached its customers
what happen to the light bulb at lower freq like 25 ? or even lower ?
will it going blink ?
Yes, there would be a significant flicker@@moh6410
You did not explain why. You only showed the math.
Thanks for info on 60hz system! But, why do the British originally went with 50hz in the first place a long time ago (besides of their monetary number system)
I'm sorry, could someone please explain what the variables N & P are and how she got 120 as the denominator🤷🏽♂️
N is the speed of the rotor in rpm and P is the no of poles in the machine
Excellent Thank You!
You’re welcome 😊
@@letslearnelectricalenginee4671 f=8×900/120=60 will this work if your rpm is low As the number of poles increases and the number of rpm decreases, will the power be generated in the same way?
It's just a good balance between capacitive losses and transformer size / continuity
Thank you for this.
Very thank you sister i was waiting a long for this answer thank you
Welcome☺️
Impressive... Thank you!
Welcome☺️
Wow thank you now I know
in burma we use 230v and 60hz
Nice explanation, But why the stuck on 3600 rpm generators ?
can't they make more efficient generators that generate let's say up to 4000 rpm ?
Hello if I connect a 230volt 50Hz ac fan to a 60Hz and I connect it again to a 50Hz which one will be drawing more current the 50Jz connection or the 60Hz connection.
nice
@Let's Learn Electrical engineering, Can you help me observe or understand the difference If i use a 50hz gasoline generator to power up a 60hz electric fan. Would there be a negative effect on the electric fan or a laptop that may be more sensitive? Thank you
The percentage of 50 Hz is over half (50%) of the planet, thus 60 Hz is a small minority, the biggest area is North and Meso America. Then also in spotted areas in the world. YAY! WE WIN us 50 Hz countries (mine being Switzerland).
My supply at home is 450 hz...maybe broken. Tried with few meters
well explained
Thanku ❤️
F= 8×900\120=60hz is it correct???
Can this equation also work if our rpm is low?
Yes it can
All u need is even no of poles
I knew it
Frequency is related to rpm ( in electricity )
Mam
Awesome explanation
#Fact
Thnq
Im Glad it is helpful ☺️
Hello ur bank account has been hacked 😂
goood- but still not clear on the equation. Simply explaining the basics of this equation would be useful. thanks!
if 60HZ what will the output voltage be? thank you
It completely depends upon the type of circuit u have connected i.e. inductive or capacitive..
Because as we know the inductive reactance is directly proportional to frequency whereas the capacitive reactance is inversely proportional to frequency
Therefore accordingly the reactance ehich means the impedance changes which effects the current through the circuit and hence the voltage
60hz how many in watts
So 50/60Htz isn't really the 'best'
It's the cheapest?
Please don't assume your viewers will know everything. Take a few seconds to explain basic concepts. I am a non engineer trying to understand what the frequency means. I do not know the formula for frequency and why P =2. If you had taken a few second to explain. the entire video would be a lot more useful to a layperson.
Thank you.
well
the only question i need an answer:
iS tHE fReQueNCy tHaT KiLLs oR ThE CuRrEnt Or mAYbE thE rESiStaNcE?
if it says 60hz does that mean i can only run 60fps
Sorry i didnt get your question
@@letslearnelectricalenginee4671 It's a reference to TV refresh rates which is also the cap of their max frames per second. Typical TV's refresh at 60 hz, and have a max fps at 60. Modern Digital TV's don't care if the power supply is 50hz or 60hz, so the 50 hz vs 60hz power problem doesn't matter for them and has nothing to do with today's TV's, but it did matter for old cathode ray tube TV's. and US CRT TV's ran at 60 fps, and Europe CRT TV's ran at 50 FPS.
50-60 HZ is a must! Try operating at 30 HZ and look at your light bulb...it will flicker like crazy! All other reasonings are just some crapshoot explanations!
Around 50 and 60, today and all other days was from 49,986 till 50.046 in EU. They are hardly trying to keep it 50 but no chance. Constantly pushing the volume up and down cant keep the sound the same in your room and on the other side of the city... Idiots.