[RE-wrenches] 230Vac load on OB FX2524T system

[Jay]

Hi Ray,

I am going to disagree with you. 
The transformer in OB stacking mode balances the inverter outputs and allows out of balance phase power.   Depending on how you set the power save mode it’ll use master then trigger slave to turn on about  1000 watts. But you could have 2000 watts on leg 1 with each inverter doing 1000 watts. 

As to the mode, you need OB stacking, not classic stacking for the use of the balancing transformer. 

Jay


> On Jul 24, 2019, at 9:43 PM, Ray <ray at solarray.com> wrote:
> 
> The transformer is just to balance the legs, and isn't necessary to run the heat pump with 2 inverters.  On the programming, port 1 should be stack 1-2 ph Master, and then set port 2 to Classic slave.  
> 
> BTW,  we as an industry should move far away from this archaic and offensive labeling.  Master? Slave?   My daughter heard me mention that the other day and was mortified, as all of us should be too.  Gentlefolks, it's time for some 21st Century solar Vocabulary.
> 
> Ray Walters
> Remote Solar
> 303 505-8760
>> On 7/24/19 6:08 PM, David Palumbo wrote:
>> I apologize for my ignorance on this issue, but in all my years I have never had to power a 230V load with an OutBack system before.
>> A couple of quick questions. It is a 8 year old OutBack system with two FX2524T’s presently powering two 120Vac legs with no 240Vac output.
>> Homeowner is adding a Fujitsu mini split heat pump for air conditioning the home (summers are getting hot enough for AC even in northern Vermont).
>> It uses 7.9 Amps @ 230Vac
>> I have a OB PSX-240 Autoformer manufactured in 2008 in my inventory here. Should I use it for this application?
>> Do I wire it up just like in this schematic?
>> If so, what do I change in the programing on the Mate?  Presently it is ADV/FX/STACK  stack 1-2ph Master. Do I simply change it to  ADV/FX/STACK  stack Classic Slave?
>> Thanks,
>> Dave Palumbo, Independent Power, Hyde Park, VT
>>  
>> 
>>  
>> Sent from Mail for Windows 10
>>  
>> 
>> 
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