[RE-wrenches] Schneider ac coupling time.

[Dave Angelini Offgrid Solar]

Jay,

XW+ and XWpro have so many adjustments for AC coupling that I wish they
would just make an offgrid firmware version that would get rid of all the
grid requirements. I tested this on XW pro and it took about 8 seconds.
However, as Kienan remarked it would also depend on charge rate from both
solar and/or grid/gen. It also would depend on the capacity/Soc of the
bank. I used a 400AH 48v bank.

Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail offgridsolar at sti.net
text 209 813 0060

On Wed, 5 Jun 2019 17:11:24 +0000, Kienan Maxfield
<maxfieldsolar at hotmail.com> wrote:
> Jay,
> 
> It waits 50 seconds to even start to try to shift the frequency. I don’t
> know how long it takes to get up to get to 64 HZ. I heard somebody say
that
> they thought that the 50 second delay should be adjustable, but I could
not
> find a way to adjust it. I have not had a chance to talk to Schneider
> tech-support about it since then.
> 
> I had a problem with this on a job, by the time the Schneider would
change
> its frequency, the voltage would be way over an acceptable voltage. I
had
> to adjust the voltage setpoint down in order to try to shorten the
delay.
> That was not really a good workaround because how quickly the voltage
rises
> depends on the charge rate. 
> 
> I know that all of the delays and ramp up speeds and ramp down speeds
are
> fully user adjustable on outback equipment, I hope that Schneider has
added
> this adjustability by now... but last time I checked, I don’t think you
> could. 
> 
> Thanks,
> Kienan 
> 
> 
> 
>> On Jun 5, 2019, at 10:46 AM, jay <jay.peltz at gmail.com> wrote:
>> 
>> 
>> HI All,
>> 
>> I’ve got a project using lithium batteries and a big hydro.
>> 
>> 4kw hydro
>> 6.8kw schneider
>> off grid
>> AC coupled hydro
>> 
>> The plan is to use a combination of ways to keep from overcharging the
>> batteries.
>> 
>> 1. PWM diversion control load. If this doesn’t keep up then we go to #2
>> 2. AC couple HZ control and if that fails we go to #3
>> 3. SS relay control on GT inverter output via inverter control
>> 
>> 
>> My question is this:  Does anyone know the time between when the XW+
>> sees the voltage and then gets to the 64hz for regulation?
>> 
>> thanks
>> 
>> jay
>> 
>> peltz power
>> 
>> 
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