120vac to 24vdc

[Stmar]

I have a 24vdc full size refrigerator, fused at 15 amps runs at 7.5 amps. Now it is run by a battery bank but they are getting to the end of their life cycle. I am researching step down transformer and power supplies in the 360 to 500 watt range. Any suggestions on transformer vs power supply? From what I found the power supply seems to have more options and safeguards. I have an electrical background but am a bit rusty on this subject.

 

[sagor]

Just buy a switching power supply, there are lots of them on places like Amazon. The usually cost less than $50 for ratings around 360W to 600W (24V supplies). They are regular 120VAC input.
Get something with a higher wattage rating, as any startup current may be twice the running current. Some switching supplies don't like heavy startup currents if they exceed their maximum running current.

 

[shelkol]

You can't run just a transformer as it's output is AC not DC.

 

[chim]

https://www.ebay.com/itm/157654007624?chn=ps&google_free_listing_action=view_item

 

[jaxs]

What is practical about a 24 vdc fridge if you are leashed to 120v supply ?

 

[GreensvilleJay]

check with 'wheelchair' service centers ! they use 24 volt ! Have 2 on the shelf, gifts that I've never used.
if you want to make your own.... 16 volt, 10 amp power transformer, bridge rectifier 100v,20A , and 10,000 mfd/50v cap would be the 'basic' power supply.

 

[Stmar]

What is practical about a 24 vdc fridge if you are leashed to 120v supply ?

The alternative power system came with the property, right now the practical side is that you have refrigeration when/if the grid power goes out, which is a rare occasion now but frequent in the past . I am thinking of the future for when the battery bank gets to it's end of lifecycle, replacement cost will be about $4,000.

 

[Stmar]

https://www.ebay.com/itm/157654007624?chn=ps&google_free_listing_action=view_item

I saw these and that is why I asked the question about step down transformer or power supply. This looks like the way to go, more options and cheaper than alternatives. This is a "spare" refrigerator used for overflow and drinks.

 

[chim]

As others said, be sure the power supply has the beans for the startup

 

[tlefire]

What about a camper inverter.?