[RE-wrenches] Magnum and Pumps

[Drake]

Hi Larry,

In this case, the Enphase will AC couple with the Magnum in the 
protected loads panel. The AC out of the Magnum provides the micro 
grid to which the Enphase connects. If  charging exceeds loads, when 
the grid is down, power will go to the batteries (up to the high 
battery voltage set point). If loads are greater than the output of 
the Enphase system, the Magnum will produce power to feed the loads.

Thanks,

Drake

At 10:55 AM 7/3/2014, you wrote:
>Hi Drake,
>
>If the Enphase are online, up to 60 amps (30A @ 240V) can be 
>transferred through the Magnum inverter to loads. The inverter is 
>not providing power to loads at that time. If the Enphase go 
>offline, the Magnum takes over using power from the battery. If the 
>load is greater than your Enphase system can provide, the Magnum 
>will transfer to battery power based on the VAC dropout setting. You 
>probably want to use the UPS mode (read ME-ARC manual about this).
>
>The new Magnum MSH models can combine AC input power and battery 
>power to increase the total AC output capacity for starting heavy loads.
>
>Larry
>
>
>
>On Jul 3, 2014, at 7:59 AM, Drake 
><drake.chamberlin at redwoodalliance.org> wrote:
>
>This information helps greatly. I really appreciate all of your expert advice.
>
>One other wild card in the installation is that the inverter is 
>going to be AC coupled with an Enphase system. The Enphase system 
>will contribute greatly to the overall power available in the 
>protected loads panel. But, with Magnum's slow voltage response I'm 
>not sure if the Enphase system will drop off line when the pump 
>surges, or if the Enphase power will be available to help with the 
>startup surge.
>
>Any insights on this?
>
>Thank you,
>
>Drake
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