guess who bought a power jack inverter

[davidwillis]

Does the pj have the inductor in it... if not it is lucky to run at all... after that I have no idea with hf inverters
.....but you do need the inductor I have found.

.........oztules

How do I tell if it has the inductor?  Can I tell by the idle power consumption, or is that something else?

[oztules]

You would know as you would have had to put it in there...... thats the E core with the three turns.

In some PJ, they have tried to copy that a bit by using big ferrite rings around the transformer leads.

Without these things, the idle will be poor, and the noise in the line will probably be able to confuse the frequency sensing of the grid tie.


............oztules

[davidwillis]

I didn't put one in, but I think it has the ferrite rings....  Idle power is under 1amp if I remember correctly.

[oztules]

Then thats not the problem... I'm currently testing an aerosharp back feeding  on a 8010 converted a 24v PJ5000... works perfectly.
Transformer seems very much cooler.... it can idle for hours and there is no discernible heat..very impressive... the board needs no mods for 24v or 48v.



One thing different, the board does not have the same dynamic range, so had to remove three turns from the tansformer to allow it to have good voltage stability under load at lower voltages 22v etc

............oztules

[billy]

Anybody know if the pj mos boards are same from 8kw up to 15000kw, just asking because they are selling 8kw 12v mos boards on eBay and hoping to use them for a 48 volt pj main board.


Thanks,
Billy

[oztules]

replied to this on the wrong thread....

Where is the address of these please Billy.

...........oztules

[davidwillis]

I tried it again this time with 29V.  It didn't help....

I am going to have to try his inverter with my system and see if it works, if it will not work with my grid tie inverter, then we will know there is something wrong with his pj, because I have never had a problem running a pj inverter with my grid tie inverter.

[billy]

Oztules,
 
I think they took them off now, dr.powerjack on ebay had them on yesterday, i'm going to keep searching for them,
as soon as find I'll let you know.

billy

[billy]

Oztules,
 
Found them here it is.  http://www.ebay.com/itm/262326559176 this  is for the 5kw but I did see the 8kw ones.


billy

[oztules]

only good if you have the later model PJ.. no good on it's own..

...............oztules

[billy]

ok
 here are the 8kw mos boards http://www.ebay.com/itm/262327999990

billy

[graljackal]

only good if you have the later model PJ.. no good on it's own..

...............oztules

Hi Oztules,

I just got a 10000W powerjack, I haven't tested yet but I saw that fix you put on the first page for the idle issue. Just wanted to ask if you already placed a tutorial or something for some novice like me (maybe someone already asked) this is a long thread, but if you did, I'll try to find it.

Thanks.

[oztules]

All the information is there somewhere... but finding it will be time consuming....

So ask what ever you want, but the crux of it is you need a big ecore ferrite, that you can wind 3-4 turns of heavy wire onto, and place it in series with either one of the heavy wires going to the transformer from the small heat sinks.

............oztules

[solarnewbee]

OZ!

good day!, Not sure of ebay.au but ebay.com in US has loads of PJ parts coming on, great prices on toroids. I have a source for other electronics from a reputable source in shenzen china if anyone wants to know. I'm sure they have mosfets etc much cheaper than PJ is selling as in $1 for several. hope that helps out folks.

newbee

[frwainscott]

Heres link for 10 48 volt, cheaper than the 8kw/48.......

http://www.ebay.com/itm/10KW-DC48V-Power-Mos-board-for-10kw-LF-PSW-power-inverter-dc-48v-ac110v-220v-/262328046087?hash=item3d13f85207:g:Tf4AAOSwmmxW4OZW

Hope it helps...

Bidding on the inverters is the cheapest way to get them if u have the time and patience..... Bid what you feel is the max you would pay for one is and see if u win it.... I just bought a 8kw pj for 227.00 US delivered.............  Be careful and read all specs.... What u bid is what u pay....

Frank.