Re: [RE-wrenches] Stand alone battery charger

Marysville Marine can replace XW welded relays. PJ GONZALEZ --- On 2020-04-21 11:44, Dave Angelini Offgrid Solar wrote: 4 xw's need the external relay contactors not the internals, Right? You will destroy the internals relays. If there was warranty still left, and there is not on 6048,

Re: [RE-wrenches] Stand alone battery charger

Also consider that the engineer is calling out xw+6848 which does have firmware support that stopped on the old graybox xw6048. Make sure you at least have the latest firmware in your 6048s' and that it is all the same. It is on the schneider site under discontinued products. Good Luck with

Re: [RE-wrenches] Stand alone battery charger

Interesting. I am going to look into that. We are manually stopping the generator (the BMS kills the two-wire start signal). I don't think the AC2 transfer time matters much in terms of solving the clients complaints, but I will play with that also. Thanks! On Wed, Apr 22, 2020 at 8:18 AM

Re: [RE-wrenches] Stand alone battery charger

KISS…. have you checked the low voltage setting on AC2? Make sure that is is not set to the default settings. AC Transfer time? I set to the lowest time, I believe its 1. You also have 4 inverters what IS the charge setting of these units? "Gen assist" enabled? Info from Schneider engineer

Re: [RE-wrenches] Stand alone battery charger

iginal Message Subject: Re: [RE-wrenches] Stand alone battery charger From: Jason Szumlanski <ja...@floridasolardesigngroup.com> Date: Tue, April 21, 2020 9:32 am To: Dave Angelini Offgrid Solar <offgridso...@sti.net> Cc: RE-wrenches <re-wrenches@lists.re-wrenches.org>

Re: [RE-wrenches] Stand alone battery charger

I'm not too concerned with multi-stage charging. I need to check with the battery manufacturer, but I'm pretty sure they are not, either. The BMS is set up to start the AGS at 20% SOC and charge to 80% SOC at which time the BMS turns off the generator. So we are just talking about bulk charging

Re: [RE-wrenches] Stand alone battery charger

Thanks, Steve. Parallel operation might be tricky, but I'm sure they have dealt with this before. I'll check it out. On Tue, Apr 21, 2020 at 12:45 PM Steve Higgins wrote: > Try these guys... Heard Good things. Not sure how they would work with 4 > in parallel on the same battery bank. >

Re: [RE-wrenches] Stand alone battery charger

The issue is during switching only. During inverter operation everything is silky smooth. During generator operation things are mostly smooth, but large loads that come on or off during heavy charging can cause some surging, but that is more a function of a junky generator (which was just replaced

Re: [RE-wrenches] Stand alone battery charger

Are you sure its just the transfer switching causing problems? I've seen quite a bit of lights dimming, flickering, and strangeness with XW inverters ( and many others) just in normal operation.  Certain LEDs are particularly sensitive, just another appliance coming on can cause noticeable

Re: [RE-wrenches] Stand alone battery charger

Try these guys... Heard Good things. Not sure how they would work with 4 in parallel on the same battery bank. https://quickcharge.com/selct-a-charge-stationary-chargers.html

Re: [RE-wrenches] Stand alone battery charger

And also most battery chargers are not multi stage they’re big taper type chargers They don’t charge nearly as efficiently or as well as a three stage inverter charger Bob Ellison > On Apr 21, 2020, at 12:32 PM, Jason Szumlanski > wrote: > > I'm not sure I follow. I would disconnect the

Re: [RE-wrenches] Stand alone battery charger

Maybe somebody’s already got this thought in here I didn’t look that in-depth Used to be a good suggestion was to get a couple magnums or heart interface inverters and use them strictly as a charger not an inverter So the inverters you have can keep inverting the generator would feed the other

Re: [RE-wrenches] Stand alone battery charger

Wrenches, Jason I have done this when l dont want tranfer switch operation but you are looking for 400 amps at 51vdc that around 20 kW of charger. l used golf cart chargers but you may want to consider a forklift charger, they are quick and basic, the BMS/U will manage the charge rates anyway. I

Re: [RE-wrenches] Stand alone battery charger

I'm not sure I follow. I would disconnect the generator AC2 input from the existing quad XW system and move it to the external chargers. Or, I could just turn the charging off by software config in the XWs. If I were to buy four inverter/chargers to serve as "external" chargers for the battery

Re: [RE-wrenches] Stand alone battery charger

I have not looked into that, but the problem also exists transferring from inverter to generator. The owner wants "clean" power all the time, and just keeping him on inverter power all the time would be a solution. On Tue, Apr 21, 2020 at 9:35 AM Tump wrote: > Have you shortened the transfer

Re: [RE-wrenches] Stand alone battery charger

4 xw's need the external relay contactors not the internals, Right? You will destroy the internals relays. If there was warranty still left, and there is not on 6048, you would need to scrap them for parts. Xw logs welded relay warnings and faults for warranty on all xw's. Dave Angelini

Re: [RE-wrenches] Stand alone battery charger

Have you shortened the transfer time from gen to inv, voltage “cut out"acceptance of the gen in power instead of their 90Vac to say 110V/L ? Raising the output voltage on the 6848s & gen set for VD/voltage sag issues under heavy loading? Watch this as sometimes under heavy loading it will cut

Re: [RE-wrenches] Stand alone battery charger

I actually need 400Adc at 51V nominal of total charge rate. I was hoping to use 100Adc chargers for redundancy, or some combination of 2-8 chargers to reach the needed current, assuming they can be synced up. I don't think the charging algorithm needs to be complicated. We are basically bulk

Re: [RE-wrenches] Stand alone battery charger

I use the CSW 4048. It has a 50 amp charger. A good spare for clients. Get 2 of them. Repurpose an old Radian or XW well over 100A. XW+ is 140adc. DAVE ANGELINI OFFGRID SOLAR "we go where powerlines don't" http://members.sti.net/offgridsolar/ [1] e-mail offgridso...@sti.net [2] text 209 813

Re: [RE-wrenches] Stand alone battery charger

I guess I should mention... 240V input from a generator. If the charger could ramp up the charge rate slowly, that would be helpful. On Fri, Apr 17, 2020, 2:21 PM Jason Szumlanski < ja...@floridasolardesigngroup.com> wrote: > I'm looking for a standalone 51V nominal battery charger suitable for

[RE-wrenches] Stand alone battery charger

I'm looking for a standalone 51V nominal battery charger suitable for a LiPO battery with 2-stage charging and adjustable setpoints for max current and battery voltage. It would require dual chargers with 100A capacity (I want dual chargers for redundancy so I have at least 50% capacity if one