Panel Convert 230 - 24v

[Corvus]

Hi all

Just been asked about if I can make a replacment panel for a company. The old butchered panel is 240v control.

Is there any rule of thumb or so to work out what size of transformer to use to convert it down to 24vac.

I have know idea how much power contactors,relays and indicator leds take.

There will be 15 or so contactors with about 9 Led panel lights with some e/stop relays.

any ideas ?

 

[Deleted member 72666]

The info is available from the control gear manufacturers website, If stocked then RS components/ Farnell data sheets are a good source too! So basically you need to know whos gear you're going to use and take it from there.

 

[Deleted member 72666]

Also I forgot to add that you'll need to convert your total amperage (based on inrush currents etc) to VA (volt amps) so as to size up your transformer.

 

[Corvus]

Thought as much, so I will need to know the full coil spec of each item and add them up and convert to VA

Thanks

 

[tazz]

If its any help, there are some good din rail switch mode power supplys on the market. A i find they cut down on space, with better safety features. try this link Simply Power Supply for DC Power Supply | DC DC Converter | DIN Rail Power Supply or your usual electrical outlet.

 

[Robotstar5]

I'd also recommend using a din mount PSU to supply 24VDC controls.

 

[grantr37]

Hi all Just been asked about if I can make a replacment panel for a company. The old butchered panel is 240v control. Is there any rule of thumb or so to work out what size of transformer to use to convert it down to 24vac. I have know idea how much power contactors,relays and indicator leds take. There will be 15 or so contactors with about 9 Led panel lights with some e/stop relays. any ideas ?

can you show a pic of the old(opened up) panel?