Probing around for a powerful 48vdc supply solution I landed on a fair priced Eltek Flatpack2 rack unit. I know, it is an overkill for HAM shack use with its 8kw of DC output power. But as Jeremy Clarkson says; quote “Power and speed solves many things” 🙂
Anyways, this really is a part of a telecom UPS system, and telecom 48vdc system has negative distribution with positive common return rail. This is the opposite of what we HAM usual needs, so it has to be rewired, or re-bared rather.
This is a 2U rack module with a smartpack2 controller and 4 x Flatpack2 2000w HE rectifier units. You can run a single rectifier without the controller but it will default to about 53,5 volts. In order to change the operating output voltage, you need the smartpack2 controller.
With the factory access password, you can with the controller permanently write new settings down to the rectifier, and it will default to any valid voltage value. Of course it is possible to hack and reverse engineer the eltek CAN-bus protocol with other tools. I know the e-bike community has done it.
Here are some pix:
Smartpack2 rack without load fuses cover panel.
Smartpack2 rack unit
Original common positive (+) return bar.
Rewired to common (-) negative return bar.
Load fuses
Complete unit
PowerSuite for M$ windows config and monitoring tool.
Hi from Madrid:
Now I build a 1 Kw LMDS linear Amp.
I buy second hand Flatpack2 + SmartPack, but no software available.
Can you say where I can download PowerSuit software.
I like to configure 48v output, and work whithout SmartPack controler..
Many Tks in advance.
Angel.
EA4GIG
Hi Angel, I will contact you by e-mail with some info.
73
Geir
Hi Geir
Same question Angel asked you… I’m looking for the powersuite utility.
I have one flatpack 2 -so far- an a smartpack controler. Stuck with the default password
73′
Marc
f6itu
Hi Marc, I will contact you by e-mail with some info.
73
Geir
tnks Geir
Hi Geir
I’m looking at this page http://la6tpa.com/category/mods/
I have the same rack as you but with three 3,00W units and a blanking plate where your fourth one fits on the right.
I can get into the service menu with the SmartPack, but whatever I do the output does not change.
Do you know which option I need to set the output to 48V please ?
Thanks
Dave G4IUG
Hi, I’m Angel EA4GIG.
I already have my FlatPack working but I can’t go above 56VDC.
The Pallet of the PA that I have is powered by 65VDC.
Some hardware / software modification is known to get to 65 VDC
Thank you
Sorry, but I do not know any such mods.
73 Geir
Hi Geir
Could you answer my question above please ? I cannot get below 53V with the SmartPack
Thanks Dave G4IUG
Hi Dave! Did you receive my email?