High power transformers under load at CERN

High power transformers under load at CERN

Category:

Science & Technology

Tags:

• high
• power
• transformers
• electricity
• CERN

[stenkind]

What you hear is actually 100Hz.

When current reverses 50 times a second the iron core of the transformer undergoes

magnetetostriction twice during each cycle. In other words, 100 times per second induced fields cause

the core to stretch slightly; a meter-sized transformer might stretch or shrink by only a micron but this

would be enough to set up an audible 100-Hz hum.

Reference: American Institute of Physics.

[ajs2120]

50HZ the best!

[captinjingles]

Sunn O))) is that you.

[thegroncho]

Es cierto, el sonido de 50/100 Hertz es terrorifico, da una sensación de temor o pánico que el de 60 Hz no produce, no se cuál es el motivo exacto de esto. Vivo en un país (Argentina) donde la red es de 50 Hertz.

[Odyseu55]

@stenkind So THAT'S how magnets work!

[XOROHN]

what a beauty sound!

[RoyHess666]

That sound is awesome, somehow I cannot stop listening to this :)

[quantumbits]

@stenkind Interesting, Playing this through my ASA I confirmed harmonics at 100Hz and 200 Hz

[YTBYTBTB]

awesome !

thanks for posting

[mima14031985]

Probably the strange noise it's due only to the metallic components of the transformers, which vibrating at line frequency they adds higher harmonics to the 50 Hz fundimental frequency (like a guitar string vibrates at its fundimental frequency + some harmonics). In such big transformers the waveform it's always a sine and all is done to prevent waveform distortions or the transformers will overheat.