Transformer inrush current

An other 33 kV transformer is switched on

Category:

Science & Technology

Tags:

• transformer
• 33kV
• 11kV
• substation
• electricity
• power
• inrush
• 50
• Hz

[tonymagona334]

i want to see a transformer going offline, that would be cool to see for a change

[RODALCO2007]

@tonymagona334 Will do.

[theduke502]

@RODALCO2007 Just a question for you. What cause that "growling" sound?

[RODALCO2007]

@theduke502 It is the magnetic stress on the laminations of the core. The soft iron laminations are magnetised and demagnetised 50 or 60 times per second.

[epd807]

NICE! I love the 50Hz growl. You have the best on the net! Keep em coming! Thanks!

[Redneckology]

50hz just sounds more evil. I love it.

[tonymagona334]

if there was anything that could describe how i wake up, it's this.

[RODALCO2007]

@captain150 Correct, I think some countries in South America have 240V 60Hz.

Basically the USA has 240 V 60Hz, although most smaller appliances there run on 110 / 120 V, ranges and airco on 240 V 60 Hz.

[captain150]

@RODALCO2007 Ideally, the single world standard would be 240v / 60hz. That would be the best.

[code123ns]

@JetMechMA yes, and you need smaller transformers. It's also used in ground based mobile radars and some other equipment.

Choosing parameters of a system is an optimization task that takes all sorts of inputs that reflect the needs and available resources (material cost, weight, transmition distance, dominant use, ...). Saying that a system is more efficient based on just one of the parameters is shallow and pedantic (:D). Also note that over time, those variables may change.

[code123ns]

@JetMechMA yes, and you need smaller transformers. It's also used in ground based mobile radars and some other equipment.

Choosing parameters of a system is an optimization task that takes all sorts of inputs that reflect the needs and available resources (material cost, weight, transmition distance, dominant use, ...). Saying that a system is more efficient based on just one of the parameters is shallow and pedantic (:D). Also note that over time, those variables may change.

[JetMechMA]

@code123ns They use 400 Hz in aircraft and I think it is because you can use thinner gauge wires which are lighter in weight which has obvious benefits in airplanes.

[WackyAmoebatrons]

@quantumbits I hesitate to answer this in the affirmative. The 3 phases are transformed in separate transformer rings, each of which vibrating at 100Hz, but with a 120 degree phase shift. I'm not sure if a human ear and brain would turn this into a frequency tripled sensation. But then, the wavelength at 100Hz is 3m, which is about the dimension of a transformer so it might be possible. We'd have to conduct an experiment, placing a sound generator next to the transformer and match frequencies.

[PKYTirl]

The soothing sound of 50Hz