Hi Mac, I have seen a single Magnum on starting a 1.5 HP motor draw over 300 amps 48 volts surge. In three years it has never failed to start that motor. I assume the charge controller is trying to use its capacitors to supply the current to the inverter, and the starting surge is tripping the breaker.
Just a 'Darryl Klug' idea, place a small resistor in series with the breaker, for example, a 100 mv at 100 amp shunt in series with the breaker that is tripping (0.001 ohms). This may force the current form the batteries to take more of the surge. You may be able to find a 0.01 ohms resistor also, which will add about 0.6 volts when the CC is at 60 amps and will add 5 volts when the inverters draw 500 amps. On Wed, Dec 6, 2017 at 9:00 AM, August Goers <[email protected]> wrote: > Hi Mac, > > What size breaker is tripping? I assume you are running at 48 v? > > August > > > > On Wed, Dec 6, 2017 at 4:18 AM, Mac Lewis <[email protected]> wrote: > > > Hello wrenches, > > > > I've got a mysterious breaker tripping that I need some ideas on how to > > fix. > > > > Original system: > > Array 6 x 235W Kyocera modules > > 1 x Outback FM60 charge controller > > 1 x Magnum MS 4024 PAE inverter > > > > Upgraded system we stacked a second inverter to accommodate an air > > compressor: > > Array 6 x 235W Kyocera modules > > 1 x Outback FM60 charge controller > > *2 x Magnum MS 4024 PAE inverter* > > > > There have been no changes to the solar array, just to the inverter side > of > > the system. We have been getting intermittent breaker tripping (a couple > > of weeks between) on the battery breaker side of the charge controller. > > The basics have been checked and rechecked. Torque is good on all sides > of > > the breaker all the way to the battery bussing. > > > > The only thing that I can think of is that during a surge on the AC side > > its sucking enough current out of the charge controller caps to trip this > > breaker occasionally. > > > > Has anyone experienced this? The only way I can see to fix it is to go > > with a larger breaker ampacity, but maybe there is something better. > Does > > anyone no how quickly the max current setting in the Outback can respond, > > would dropping this help? > > > > Thanks > > > > -- > > > > > > > > Mac Lewis > > > > *"Yo solo sé que no sé nada." -Sócrates* > > _______________________________________________ > > List sponsored by Redwood Alliance > > > > List Address: [email protected] > > > > Change listserver email address & settings: > > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > > List-Archive: http://www.mail-archive.com/[email protected]. > > org/maillist.html > > > > List rules & etiquette: > > www.re-wrenches.org/etiquette.htm > > > > Check out or update participant bios: > > www.members.re-wrenches.org > > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/[email protected]. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
