Transformer Inrush Currents 4

[Vladpl]

Hello all and happy new year.

I have a problem which is inrush current.

The main problem I have that the transformer is being used as a power supply with mains outlets (you can plug in any mains powered equipment) the unit is 240V and rated at 10A. As you all know when you turn on a power supply / transformer there are very high inrush currents for a few cycles that can go up to 1000A in this case. This would all be ok if the hospital where this is going didn't install C-curve circuit breaker which trips when there are high inrus currents. Have they put curve-D breaker there would be no problem since it has motor start characteristics. And as you have guessed if you power up the power supply it will tripp the circuit breaker due to the high inrush currents.

One way this can be avoided is to put a resistor, capacitor and a relay and create a short timing circuit to stop high inrush currents.

My question is this.... Have any of had a similar problem and how did you go about solving it.

Thank you in advance for your help.

 

[itsmoked]

Reduce the picture size.. hmmmm. Well you need a jpeg viewer that can "RESIZE" jpegs.

I use Firehand Ember.

http://www.firehand.com/Ember/index.html

I use an old paid version that appears to have only the free features now listed.

You open a picture anywhere on your system by clicking it. It opens to its native dimensions.

Pull down edit.

Select resize.

Make sure "constrain proportions" is checked so the picture doesn't distort.

Then enter 400 into the width. (The height will change accordingly.)

The image will jump to the new size.

Close the image.

It will ask, "do you want to keep the changes?"

Answer "yes".

Click the picture just to see if you like things.

Proceed with the standard posting procedure.

Or use any other graphics program you have that can resize.


Too much info? BUWHAaahahah

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[Skogsgurra]

Thanks!

No, not too much.

At least not too WIDE!

Gunnar Englund

http://www.gke.org