[RE-wrenches] Magnum and Pumps

[Larry Crutcher, Starlight Solar Power Systems]

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