Connection of a 3-transformers power supply to the 220V

[Mandron]

Hello everybody,

I recently bought for a nice price a 24VDC Siemens power supply (4AV3202-2EB00-0A) that I intent to use to build a stabilized power supply.

The PS is basically rectified and filtered and has 3 transformers. Several primary voltages are possible.

I want to connect it to the 220V monophased electrical network.

I understand that I must connect 3 jumpers (1U2 to 1V5, 1V2 to 1W5, 1W2 to 1U5) in order to select the right voltage, but then, I'm in trouble finding how to connect them to the 220V network.

Here are the indications : and the transformers connections :



Any help would be greatly appreciated.

 

[roukel01]

it looks to me like a three phase transformer only. You do get 230V 3 phase

 

[SirKit Breaker]

I bet that was expensive even if it was a good price, to save you from blowing it to bits, I will keep my gob shut

 

[pmac10]

looking at your photos i would say 230/240 V between any 2 or your 3 connections will give 24VDC, check siemens website, its very good.

 

[Knobhead]

Live to 1U5. Neutral to 1U2. it will be single phase only so watch the temp of the transformer

 

[Mandron]

Thanks Tony for your answer. It works !

I suppose that you meant without the jumpers, because it works with or without them.

I studied the circuits and found out that only the U transformer is used (That's what you said: Single phase). I suppose that I can't use all 20 Ampere (secondary) in this way.
Wouldn't be possible to connect all 3 transformers in parallel to the monophased 220V to have the full power ? Maybe this is a stupid question, but I don't know a lot about triphased networks.

 

[Mandron]

Hi SirKit Breaker, the good price was 17 pounds on an auction website for a brand new device

 

[Knobhead]

Don’t try all three legs of the transformer on single phase. The magnetic flux of U, V & W will cancel each other out. Either you will blow your supply or toast the transformer. Also don’t fit any of the links, you will short sections of the windings out causing the transformer to burn out.