[RE-wrenches] Magnum Frequency Shift
Mark Frye
markf at berkeleysolar.com
Sat Jun 13 18:05:16 EDT 2020
Jay,
Do you use an NO or NC solid state relay?
Mark
On 6/13/2020 7:46 AM, Jay wrote:
> Hi Mark,
>
> Then the relay method is easy and reliable to use.
>
> Relay trips at whatever battery voltage you don’t want to exceed.
>
> I use a solid state relay with a good heat sink, only switching one leg.
>
> Jay
>
>
>
>
>
>
>> On Jun 13, 2020, at 7:05 AM, Mark Frye <markf at berkeleysolar.com> wrote:
>>
>>
>>
>> On.
>>
>> On 6/12/2020 7:27 PM, Jay wrote:
>>> Hi Mark
>>>
>>> Is this off grid or on?
>>>
>>> Jay
>>>
>>>> On Jun 12, 2020, at 7:09 PM, Mark Frye <markf at berkeleysolar.com> wrote:
>>>>
>>>>
>>>>
>>>> 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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