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Andrew945 avatar image

SmartSolar 100|15 load connected to Phoenix inverter fails

Have a 100|15 SmartSolar charger charging a 12v battery pack. Charges fine. Phoenix 12v | 350w connected to the load ports disables the load output. Disconnect the inverter and cycle power the SmartSolar charger; load output goes to 12v as expected. Connect Inverter directly to the battery, inverter works fine. What could be going on? Thanks so much for any help!

smart solar set-up help
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3 Answers
JohnC avatar image
JohnC answered ·

Hi Andrew. Victron don't recommend running inverters from the load terminals. Perhaps especially their own, which are heavily built and with a lot of capacitance aboard. Even when turned off, just hooking them up can easily exceed the capability of the load terminals. It often comes with a spark, such is the speed at which this happens.

There are workarounds, like a relay setup to the batt connection. I wouldn't bother myself, but your choice whether to head there if the load V-protection is an issue for you..



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Great explanation. Thank you very much.

Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

What you need is this cable to connect the remote contact of the Phoenix to the load contact of the MPPT:

https://www.victronenergy.com/cables/inverting-remote-on-off-cable

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I wasn't aware that gizmo existed. Like a relay-in-a-cable. :)

Ray_mont avatar image
Ray_mont answered ·

Hi @Andrew945

a very rough calculation

the inverter will draw at 12v 29 amp (350 watt / 12volt)

the max output on the load connection is only 15 amp

that’s why the SmartSolar Will disconnect the load.

Ray

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