Inverter/Charger AND an extra Charger? - Page 2
 

Inverter/Charger AND an extra Charger?

Started by Tikvah, September 04, 2016, 05:52:12 AM

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Geom

I read the (rather thin :) ) manual for that inverter. It's actually a pretty nice straight forward inverter.
But it does not have a rate limiter to control its input load.
It does have the ability to limit the charge current (and thus the required load) via dip switches.
But that's not something you really want to do, as that would limit your ability to charge when you are hooked up to a high amperage plug (30 or 50 amp).

This inverter also does not really "power assist" the load per say. It more tolerates a rather high initial surge current (likely by augmenting some from batteries). But it only does so for up to 20 seconds.

It has a setting that can control AC preference vs DC preference. I would definitely check that to make sure that it's in AC preference. In DC preference it's essentially always inverting, and only uses AC when the batteries are depleted.
I can't quite figure out WHY you'd want that, but they rambled on about some technobableygook about doing so in a solar configuration. And I guess I can kinda sorta maybe see that, but even then I'd still prefer to use shore power when it's available; EVEN WITH solar backing it.

So from what I see, without a rate limiter I'm not sure how you're not blowing breakers already.
From what I read, that inverter runs as if the taps are fully wide open. And that transfer switch will handle up to 40 amps.
So I'm curious why/how you're noticing that undesirable behavior; as it has no idea it's on a 15 amp, vs 30 amp , vs 50 amp circuit.
I'm also not sure why, when the load drops (say after the coffee is made), that it wouldn't just go back to charging as normal.

So I would definitely check the dip-switch that controls that AC vs DC preference.

Now a possible solution could be intentionally setting that dip-switch to DC preference (yeah yeah, I know what I said above :) )
If you did so, then you'd constantly be inverting. But then you could just hook a plain old 24V charger to whatever input AC plug you have available and have that charge the batts all the time. And since you'd be running off batts all the time, the inverter wouldn't really know the difference. That's not really an ideal solution as it limits your load potential to just the 3000 watts of the inverter, you wouldn't be using the rather impressive high-efficiency charger already on the inverter, and you could possibly overload that external charger if the load is high enough (as previously mentioned). But I think it'd get you (close to) what you need.
But again, there should be no reason to do that, as the inverter should just go back to charging when the load subsides.

Confusing enough??? :D
1966 GM 4107
6v92 Turbo
V730

Oonrahnjay

Quote from: Geom on September 06, 2016, 08:35:54 PM...  I read the (rather thin :) ) manual for that inverter. It's actually a pretty nice straight forward inverter. ...

     Confused ..   ??? ??? Which inverter? 
Bruce H; Wallace (near Wilmington) NC
1976 Daimler (British) Double-Decker Bus; 34' long

(New Email -- brucebearnc@ (theGoogle gmail place) .com)

Geom

1966 GM 4107
6v92 Turbo
V730

Oonrahnjay

Bruce H; Wallace (near Wilmington) NC
1976 Daimler (British) Double-Decker Bus; 34' long

(New Email -- brucebearnc@ (theGoogle gmail place) .com)

Tikvah

That's helpful information Geom,
I haven't understood the AC priorioity vs the Battery priority switch.

I think I need to find about a 30 amp, 24 volt charger that will charge even when there is a load.

Thanks
1989 MCI-102 A3
DD 6V92 Turbo, Alison
Tons of stuff to learn!
Started in Cheboygan, Michigan (near the Mackinaw Bridge).  Now home is anywhere we park
http://dave-amy.com/

Oonrahnjay

Quote from: Tikvah on September 07, 2016, 12:01:44 PMThat's helpful information Geom,  I haven't understood the AC priorioity vs the Battery priority switch.

I think I need to find about a 30 amp, 24 volt charger that will charge even when there is a load.

Thanks 

    Hey, Dave.  As you may have noticed from my comments on this and other threads about inverters, I haven't been thrilled with the Outback that was recommended to me a while ago.  It pretty much works but I'm tired of lots of sorta clunky things in its operation -- plus, it's 12V and the big alternator on my new engine (and most of the engine control system) is 24V and it's easier to find a heftier inverter with 120V output if it's 24V input.  So, I've been looking.
    I have become convinced that -- like a lot of things in life -- you don't get what you don't pay for and you've got to watch people who want to not give you what you did pay for.  It appears to me that performance, features, ease of use, and reliability are pretty much directly linked to $$$$.  There are lots of cheaper inverters out there but their specs don't look good and reviews on Amazon and other places on the net seem to indicate that few of them make people happy.  Chris and Cherie (the Technomads) are really big on their Victron; I sure like the way it works, highly efficient, easy to use, good selection, models specifically for "mobile" use that actually have things we need and not just a little weather resistance.  Whoever designs Victron inverters really knows what people need.  The control system looks really well featured and easy to use.  But there's the thing about the $$$. Oh, well, I guess those are the choices.  I have a while before I want to buy -- if you find something that looks good, let us know, OK?
    Thanks,  BH
Bruce H; Wallace (near Wilmington) NC
1976 Daimler (British) Double-Decker Bus; 34' long

(New Email -- brucebearnc@ (theGoogle gmail place) .com)