TDK-Lambda PFE1000F Power Supply

Jan 7, 2017
92
beneteau 36 new london
A stack of these just arrived, cheap.

TDK-Lambda PFE1000F-48/T AC to DC PSU

Output 48Vdc (38.4 - 57.6V) 21A so a kW each

Very flexible world-compatible input, 85-265Vac 47 - 63Hz

About 6" x 4" x 1/2" thick, all sealed up, and conduction cooling, so silent, no fan!

So far I'm thinking I scored gold. . .

But total noob here on the AC side, please help me be safe with this stuff.

Especially since no Earth Ground available when mobile.

Obviously at the low end (Japan / US household circuits) will not put out full power, so planning to parallel to get about 3kW in total, each unit can be powered by a separate circuit or generator.

Just can't find the paralleling appnote referenced from the data sheet 8-( Other models just say make sure no connections to ground, and get Volts output tweaked the same at 70% of load. Obviously will ensure the chassis / heat sink isn't exposed, but apparently the case is isolated from the internal circuitry - to be verified.

Anyone know a good way to non-destructively attach wires to those little posts?

Also any ideas on what the circled abbreviations mean?

https://m.imgur.com/gallery/06bQh2d

06bQh2d.jpg

Thanks!
 
Jan 4, 2010
1,037
Farr 30 San Francisco
That isn't a complete power supply exactly https://www.us.tdk-lambda.com/ftp/specs/pfea.pdf
Use your google-fu eventually you will find a manual. It doesn't have a fan because you are expected to purchase and install your own heat sink/fan combo to maintain the baseplate at 100C or lower. As to the photo glare, is unreadable. The install manual will provide some information about that and about current sharing between multiple units.
 
Jan 7, 2017
92
beneteau 36 new london
Just FFR

Apparently with good enough heatsinking, many usage conditions require no active fan at all!

Not sure if the talk of induction, resistors here is something I need to learn about?

https://www.us.tdk-lambda.com/lp/products/pfea-series.htm
https://www.us.tdk-lambda.com/lp/technical/pfe-series.htm

manual https://uk.tdk-lambda.com/KB/PFE1000FA-Installation-Manual.pdf

I'm hoping that stuff is just for EEs looking to integrate these PSUs into their third-party products.

And man, 390 no-load Volts coming off the BC posts! Assuming nothing needs attaching there, liquid tape **and** some rubber caps fixed above with a decent adhesive.

I see the newer versions of these go for $500-700 each! Quite a bargain, once I get them working. . .
 
Jan 25, 2011
2,391
S2 11.0A Anacortes, WA
“RUN FORREST RUN!!”
Take heed:
“These products are designed for use within a host equipment which restricts access to authorised competent personnel.
This product is a component power supply and is only to be installed by qualified persons within other equipment and must be not operated as a stand alone product.
This product is for sale to business to business customers and can be obtained via distribution channels.
It is not intended for sale to end users.”

These supplies are used as a component of bigger systems. Either circuit board or chassis mounted. All the connections you’re wondering about are control and monitoring. You do not use these as a standalone power supply. What are you going to do with 48V?
 
Sep 20, 2014
1,320
Rob Legg RL24 Chain O'Lakes
That is the million dollar question I had as well, What are you going to do with 48 volts?
manual https://uk.tdk-lambda.com/KB/PFE1000FA-Installation-Manual.pdf
I'm hoping that stuff is just for EEs looking to integrate these PSUs into their third-party products.
Hardly. You must build the required RFI filter on the AC line. This is required by LAW. If you start shutting down everyone's computers and safety alarms within a city block, you will be liable for significant fines. Take the other external circuitry seriously. It will not work without it.

As far as the posts, you need a sheet of fiberglass with little metal caps that slip over those posts. Basically you need to set it up as if you are plugging it into a circuit board. The Lambda module gets sandwiched between the fiberglass sheet and the heatsink.
 
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Jan 4, 2010
1,037
Farr 30 San Francisco
Plenty of stuff needs attaching to the BC posts. Is it still possible to take out life insurance on third parties?
 
Jan 7, 2017
92
beneteau 36 new london
OK, not thrilled but that's why I'm asking here. I certainly do not want to be unsafe, nor interfere with nearby electronics.

Any detailed suggestions on **how** I can get these put into service properly?

If necessary, I'm willing to pay someone, ship them out and back, but obviously it would be better to get guidance from those who know to learn and DIY.

If nothing else, pointers to a more appropriate forum please, it does not need to be boat related.
 
Sep 20, 2014
1,320
Rob Legg RL24 Chain O'Lakes
The RFI filter on the front end is going to have about 50 bucks in parts alone. The chokes are 13 bucks each, and you need 3 of them. 8 capacitors at a couple dollars each, and the price adds up. That does not include any other part of the circuitry. Your connections too these devices needs to be very solid and very close to the pins, otherwise it will likely self destruct.

You still haven't stated what you intend to use 48 volts for. That may help us help you decide on a better solution.

The truth of the matter is, you likely would be much better off purchasing something like this:
https://power.sager.com/se-1000-48-...MIpaLE-a6x4AIVDODICh3MawL9EAQYAiABEgKEffD_BwE
$157.00 and it is a complete package.
 
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Sep 24, 2018
2,549
O'Day 25 Chicago
American Science and Surplus usually has RFI filters cheap. They are surplus so take that with a grain of salt