48VDC 1500W PSU

No... but you've probably got old computers to get rid of, so 10x used pc supplies?

NT

Not something one can ship with a new product. I'm initially looking for 100+

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Dirk

The Consensus:-

What do you consider ridiculously expensive? There's nothing unusual about the rating - what other features do you need?

Ken

'Ridiculously expensive' - >$1000 Features, not very much. I obviously need short circuit protection and foldback, but stability is not a great issue - +/- 2V ripple would be OK. Size/weight/efficiency is not too much of an issue either.

Ideally I want a switch mode PSU for

"Dirk Bruere at Neopax"

** Why don't you try designing one in software then ?

....... Phil

48 volts is common in telco equipment.

--
Service to my country? Been there, Done that, and I\'ve got my DD214 to
prove it.

foldback,

Ameritron sells one for use with their linear amplifiers for around $700. Don't think it is quite 1500W though.

Tam

Jameco lists Mean Well 48V 28.5A (1368W) for $620 in quantity of 25; probably cheaper if you can order 100+. Don't know if that's quite enough power for you.

Part of the problem is that 48V is a favorite of telecom and they have a whole slug of additional requirements to meet. It makes them expensive. They are also the volume consumer at 48V, making normal vendors hard to see. try listing 24V vendors and going directly to the various manufacturers and looking for 48V supplies.

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JosephKK

"Walter Harley"

** Dirk seems to be in the UK ( nice pic of the dude on his site) but confusingly quoted prices in dollars.

Does Dirk need a 230 AC volt PSU or a 120 AC volt one?

Or does he need both voltages ??

The "Mean Well" ( you just gotta love that name ! ) Chinese made switching PSU is only rated for a 230 volt supply.

It has full PFC (very nice) but it is three times his stated optimum ( very optimistic) dollar price.

What is the application ?

Some fancy piece of high tech gear?

Or a truck battery charger ?

....... Phil

foldback,

Mass produced 24v supplies are made for the industrial controls market in these kind of ratings.

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Good day!

________________________________________

Because I don't have your intellect.

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Dirk

The Consensus:-

Could be good enough. Thanks.

Both, eventually. The products will be marketed worldwide.

I assume by the time we are buying thousands the price will come down very significantly. Or we will have one designed and built in China.

Motor drives, of a sort.

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Dirk

The Consensus:-

We just bought three Nortel 1200W 48V supplies off Ebay for $199 each. (They were heavy, and I think the international shipping cost as much again.)

The trick is to search for 'rectifier', because that's what telecoms folk call what you would call a 48V PSU. With luck, you can find a dealer who has several of the same type to sell.

Regards, Allan

Powergate shows the MeanWell RSP-1500 (48v, 32A) for $373 at 25-49 pieces, a mere 24 cents per watt. Has a built-in fan, which is nice.

John

That's more like it. By the time we get into the thousands we can rip off their basic design and do our own confident we can make it cheap in China:-)

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Dirk

The Consensus:-

That's probably OK for the development phase, but we are going to need them in qty later on when we ship.

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Dirk

The Consensus:-