[RE-wrenches] Magnum Frequency Shift

[Mark Frye]

I see.

What you say about the frequency shift being slow makes me again doubt 
the value of even using it in my application.

I have a controller that can regulate the AC dump load. That same 
controller has a high limit switch which I could use to cut the AC feed 
to the GT inverters. But then both functions are in the same device. On 
the other hand, it is a very reliable device so....perhaps sufficient.

On 6/12/2020 6:37 PM, Bradley Bassett wrote:
> I have a relay on the XW+ Aux and also frequency shift which is 
> usually slower, so the relay usually cuts out first. I also have a DC 
> coupled array feeding the system.
>
> Brad
>
> On Fri, Jun 12, 2020 at 4:34 PM Mark Frye <markf at berkeleysolar.com 
> <mailto:markf at berkeleysolar.com>> wrote:
>
>     Yes an elite group within an elite group.
>
>     So the SB240 does not have frequency shift /wattage control. How
>     are you implementing charge control in stand alone mode?
>
>     On 6/12/2020 4:28 PM, Bradley Bassett wrote:
>>     Wow! Someone else with SMA SB240's, I have 12 of them that I've
>>     AC coupled to an XW+5548. They are very solid performers.
>>
>>     Brad
>>     AEE Solar
>>
>>     On Fri, Jun 12, 2020 at 3:39 PM Mark Frye
>>     <markf at berkeleysolar.com <mailto:markf at berkeleysolar.com>> wrote:
>>
>>         Hello,
>>
>>         I have a small array of 8 - SMA SB240 microinverters on the
>>         roof. Peak
>>         power out of the array has never exceeded 1800 W.
>>
>>         I am adding a Magnum MS-PAE 4448 with a 315 AH flooded Lead
>>         Calcium
>>         battery bank.
>>
>>         Cheers
>>
>>         On 6/12/2020 12:31 PM, Chris Schaefer wrote:
>>         > G'Day Mark,
>>         >
>>         > Which grid tied inverter are you attempting to AC couple
>>         with. I
>>         > apologize if you already called it out in the thread.
>>         >
>>         > Christopher
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