Ultra Compact 2500W 48V server power supply

[Doctorbass]

The Cherokee International CAR2548

This part number is the one of one of the highest power density of all 48v psu existing actually.

It have 27W per cu3
the most known we use have about 19W/cu3

It have 1.6" x 4" x 14"

it is about twice smaller than the ESP120 and have similar output. The ESp120 have 21 inch long!!! but the CAR2548 is only 14! that's 7 inch less!

it's the same brand as the CAR1248 known to be used by the Russian for the Adaptto.

And yes! if you have enough current on the 120V or want to use both outlet in parallel you can use then with the 120V !
(90-264 VAC, 47-63 Hz)

By comparison the ESP 120 is only 190-240V.

and It is just 4.73 pounds.

Here is the datasheet: http://pdf1.alldatasheet.fr/datasheet-pdf/view/408715/LINEAGEPOWER/CAR2548FPB-1A.html


Doc

 

[fechter]

Any idea how much they cost?

 

[Doctorbass]

Any idea how much they cost?

Actually there is one used on ebay for about 300$

I saw brand new for 1100$ at digikey :lol:

Doc

 

[Doctorbass]

This one is also very interesting and more compact than the ESP120.

ELTEK Flatpack 3000-48

57A 53V ( 3000Watts)

and it also take from 120v to 240V ac

http://www.ebay.com/itm/Free-Shippi...191?pt=LH_DefaultDomain_0&hash=item20e848b3bf




here is a used one for very cheap price: http://www.ebay.com/itm/Eltek-Valer...311?pt=LH_DefaultDomain_0&hash=item2a4c25a687


and one 2000W for 77$ http://www.ebay.com/itm/Eltek-Flatpack-2-He-/161586265000?pt=LH_DefaultDomain_3&hash=item259f4abba8

 

[Ohbse]

Front end rectifiers are a GOLDMINE for compact, high power, high reliability and relatively cheap power supplies. Some of them even do CC/CV functions out of the box...

Note that Cherokee changed names to Lineage power which is now a division of GE called "GE Critical Power".

I bought two Lineage power CP1800's for about $20 each from eBay missing their front fascias but otherwise in brand new condition. Use them both every day @ 1800w!

Ideal solution for VERY high power battery charging would be two 19" rack mounted rectifier units with the management heads. Configure them to split your desired end voltage in half, e.g 22s @ 4.15v = 45.65v per unit. Connect in series and enabled constant current battery mode and you could potentially charge at 8kw if you could find enough input power

Also worth noting that the majority of these rectifier units can also take DC input voltages from 80 - 250v without impacting output rating! You can power your battery charger from a much larger bank of batteries which are charged by solar panels for instance.

 

[flathill]

Just remember before you slap these on your Zero's to enable on board quick charging via J1172 to open them up and silicone the components where the meet the board to prevent vibration induced failure (especially the caps and chokes)

 

[xenodius]

This one is also very interesting and more compact than the ESP120.

ELTEK Flatpack 3000-48

57A 53V ( 3000Watts)

and it also take from 120v to 240V ac

http://www.ebay.com/itm/Free-Shippi...191?pt=LH_DefaultDomain_0&hash=item20e848b3bf




here is a used one for very cheap price: http://www.ebay.com/itm/Eltek-Valer...311?pt=LH_DefaultDomain_0&hash=item2a4c25a687


and one 2000W for 77$ http://www.ebay.com/itm/Eltek-Flatpack-2-He-/161586265000?pt=LH_DefaultDomain_3&hash=item259f4abba8

Wow, that flatpack is a great deal! And it has a better output @110v than the Eaton APR series or others! I'm planning on using one 110v-220v PSU and multiple ~220v PSU's to quick charge my next build, and it's giant pack =) Adaptto verified that I can use multiple phases to charge, so I think I will use 4 supplies on 4 phases (of 6 phases, into 2 Max-E's) Should hit my goal of 8kw!

 

[Doctorbass]

Just remember before you slap these on your Zero's to enable on board quick charging via J1172 to open them up and silicone the components where the meet the board to prevent vibration induced failure (especially the caps and chokes)

Yes, that's what i did and what i'm doing for all psu used onboard since 2007 :wink:

I do more prevention at the engineering level than what is required usually 8) .. not paranoia but close to

btw the Eaton 1800W psu is alot fragile!!.. many component will resonate at various frequency until the solder break. I have epoxy some and used silicon on other the goal is to dissipate vibration energy or send it somewhere else to the main frame. I also saw some cold solder that i had to rework and also some screw that fix heaby heatsink to the pcb was loose !!! I have put some permanent threadlocker and retorqued them to teh proper torque rating.

At work we have various enviromnment testing equipment such as 15kW vibrating table ( made of a big amp and a big coil) that can go into a thermotron to simulate humidity and heat ramp and cycles. We also certify some flight equipment we build.

So YES everybody MUST pay attention to these psu that ar ebuild to be in a STATIC POSITION.. so they require some attention and mod to extend their live on ebike or e-motorcycles!!

Here is some mod i did to my Eaton 1800W psu


Doc

 

[flathill]

Overkill. Nice!

Another trick is to mount the psu on isolation mounts on your bike if it is not a baseplate cooled model (has fan)

 

[striker54]

This one is also very interesting and more compact than the ESP120.

ELTEK Flatpack 3000-48

57A 53V ( 3000Watts)

and it also take from 120v to 240V ac

http://www.ebay.com/itm/Free-Shippi...191?pt=LH_DefaultDomain_0&hash=item20e848b3bf




here is a used one for very cheap price: http://www.ebay.com/itm/Eltek-Valer...311?pt=LH_DefaultDomain_0&hash=item2a4c25a687


and one 2000W for 77$ http://www.ebay.com/itm/Eltek-Flatpack-2-He-/161586265000?pt=LH_DefaultDomain_3&hash=item259f4abba8

Wow, that flatpack is a great deal! And it has a better output @110v than the Eaton APR series or others! I'm planning on using one 110v-220v PSU and multiple ~220v PSU's to quick charge my next build, and it's giant pack =) Adaptto verified that I can use multiple phases to charge, so I think I will use 4 supplies on 4 phases (of 6 phases, into 2 Max-E's) Should hit my goal of 8kw!

I've bought a new one 48v 2000w from less than 100EUR delivered to me -> http://www.ebay.com/itm/161586265000
I'm expecting to receive it this week. I will make a thead about it

ELTEK also have a even better version -> 48v-60V 2000w with voltage range from 39.9V to 72V but I didn't find any on ebay with a appealing price

 

[Doctorbass]

ELTEK also have a even better version -> 48v-60V 2000w with voltage range from 39.9V to 72V but I didn't find any on ebay with a appealing price

Interesting! that would be perfect to add to my actual triple RSP2000 charging setup for my zero!

What is the part number of the 39.9 - 72V model?

Ok I have found it: pn 241115.705.

and guess what! it's 95.5% efficient!!


what is nice is that they also make various model for wide DC voltage range!:

24VDC, 21.5 – 36 V
30VDC,
48VDC,
60VDC, 39.9 – 72 V
110VDC, 89.2-171.6 V
125VDC
220VDC 178,5-297 V


http://www.eltek.com/photoalbum/view2/P3NpemU9b3JnJmlkPTY2NjQxMiZ0eXBlPTE


Excellent find!!! striker54

Doc

 

[flathill]

These higher voltage PSU's don't need to be run in series but with a few in parallel you would have high redundancy for long road trips.

How do you wire these in on the Zero? Direct to pack with the PSU output enabled by the stock BMS? Do you bypass the contactor?

 

[Doctorbass]

These higher voltage PSU's don't need to be run in series but with a few in parallel you would have high redundancy for long road trips.

How do you wire these in on the Zero? Direct to pack with the PSU output enabled by the stock BMS? Do you bypass the contactor?

My Zero is a 2012 so it's a 18s battery witch require up to 76V.

I wanted to be able to use thelevel II J1772 charge station at the max power available for the most popular witch is about 6-7kW ( 30A 240V)

I have used 3 RSP-2000 meanwell witch are some o fthe top of the line power supply for telecom, and I have connected 2 of these 48V in parallel to get 48V 84A with the current share link connected and I have used another but a 24V 80A model in serie with the two other to get 75V and 90A on CC-CV when adjusted.

They draw about 30A on the 240V witch is just perfect. this charge my ZF9 witch is a 7,8KWh in about 1.25hour

I connect the charger directly to a connector that is linked to the Sevcon battery input. I activate a switch that enable the contactor. I don't need to monitor the HVC because these cells are very well matched and high quality so they remain balanced perfectly and I always leave about 1V margin so I never top off them with this charger. To prevent I let the onboard 1kW charger to rebalance them at every 10-20 cylces but it is not really required....

I also sometime use the onboard charger in addition of the 6.6kw meanwell when I can use a level II of 40A or 50A and connect the onboard charger that also work from 100-240V withc push the total power numbe r to 7.6kW... or I can connect the onboard charger to a different normal 120v 15A plug whil ethe 6.6kW is also working..

http://endless-sphere.com/forums/viewtopic.php?f=14&t=52560&hilit=dr+bass+charger


http://electricmotorcycleforum.com/boards/index.php?topic=3085.0

[youtube]nFAh5pDG_wU[/youtube]

Doc

 

[Doctorbass]

Here is a trip that I made last year using these witch have worked perfectly!!

http://roulezelectrique.com/quebec-la-sarre-quebec-en-moto-electrique-2000km-pour-0/

 

[skWarDog]

This one is also very interesting and more compact than the ESP120.

ELTEK Flatpack 3000-48

57A 53V ( 3000Watts)

and it also take from 120v to 240V ac

http://www.ebay.com/itm/Free-Shippi...191?pt=LH_DefaultDomain_0&hash=item20e848b3bf

Wow, that flatpack is a great deal! And it has a better output @110v than the Eaton APR series or others! I'm planning on using one 110v-220v PSU and multiple ~220v PSU's to quick charge my next build, and it's giant pack =) Adaptto verified that I can use multiple phases to charge, so I think I will use 4 supplies on 4 phases (of 6 phases, into 2 Max-E's) Should hit my goal of 8kw!

Actually, the spec sheet says it detrates itself to 1000 watts on single-pole 100-120V AC power..... This Eaton APR48-3G pr-4 I just bought off Flea-Bay for $65 "Best Offer" (shoulda lowballed more, seller took offer fast!) puts out 1100 watts on single-pole 110VAC. I do have 2-pole 200-240 VAC at home, but think I'll first try single-pole so it's portable. It'll be here Friday. I got the AC power cord and DC out 10 ga. silicone high-strand Oxy-Free cable ready-to-go so I can verify "excellent working order"...
http://www.ebay.com/itm/351322392097?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

But if you like the Cherokee-Eltek brand, the same seller has this one which will output 1250 watts @ 48V. Guarantee if you offer $65, they'll prolly take it:
ELTEK VALERE POWER DC OUTPUT RECTIFIER H1250A1-VV 48V 25A http://www.ebay.com/itm/ELTEK-VALERE-POWER-DC-OUTPUT-RECTIFIER-H1250A1-VV-48V-25A-SERIES-2-4B-H1250A1VV-/301547452350?pt=LH_DefaultDomain_0&hash=item4635a0f7be

 

[xenodius]

According to this datasheet it does 1380W at 85v, and they say it's linear derating-- so 1505 or 1.5kw at 110v. And 95.5% peak efficiency! Were we talking about the same PSU? So many great ones here...

The efficiency curve for the Eltek actually looks REALLY good compared to the one I saw for the Eaton, but, hardly matters for our application. It would be suitable for hooking right up to a portable solar system, though!

I had planned on using several Eatons some months ago, great PSU! And great buy!

 

[striker54]

I'm expecting to receive it this week. I will make a thead about it

As promised here is thread: http://endless-sphere.com/forums/viewtopic.php?f=2&t=67579