2.4kw generator not working when travel trailer plugged in

[JEB]

What still bugs me about an overload theory is that the OP said he could power up the system without issue on a standard household 15A circuit that has no GFCI protection. Why would that be? The PB puts out 20A. If a ground-neutral conflict between the PB and the MP isn’t the issue, what else could explain it? A start up surge in excess of 20A that’s so brief and transient that a mechanical 15A breaker can withstand it but a 20A electronic breaker can’t?

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[Davexxxx]

If the MP is off and the N/G is NC, powering it up via shore power will trip GFI because the delta to trip the GFI is so low.

Except it doesn't ... On mine.

What's the max amperage the battery charging can draw?

120 but irrelevant if the limiter is throttled to PPOB limits and functioning.
https://www.victronenergy.com/uploa...inverter-charger_2kVA-and-3kVA-120V-US-EN.pdf

 

[HammaMan]

As suspected, it operates in hybrid mode -- can't run PPOB in hybrid mode. The 7.2 will provide 3.8kW sustained which doesn't need the hybrid operation. If shore load limiting is enabled, hybrid is likely the default operation. Fully charge the batteries and try connecting the 2.4 system w/ the batteries on and current limiting off.

 

[brigsby]

Do you know why Pro Power cannot operate in hybrid mode? What is hybrid mode? Is it when the MultiPlus power assist is activated?

 

[HammaMan]

Do you know why Pro Power cannot operate in hybrid mode? What is hybrid mode? Is it when the MultiPlus power assist is activated?

Yes, it puts its inverter into parallel operation. PPOB is not parallel capable as tested. Pretty much just about every other power source will allow it. I suspect the GFI doesn't like it -- it's pretty sensitive.

 

[brigsby]

I will check that out.

 

[Davexxxx]

Vid of a 7.2 going through MP, + batts, + Aircon, + fridge.

A bit rambly and not all directly on topic but he does show what is happening in the truck.

 

[Davexxxx]

Vid of a Raptor 2KW to MP.

 

[Davexxxx]

Another vid from the first guy.

 

[Davexxxx]

And another, this time using the 20A side.

 

[HammaMan]

The "power assist" feature is what cannot be enabled(or triggered) w/ the PPOB. Just read through the manual, I'm guessing the TT company puts settings into the unit. If programmed with a computer the dip switches may all be set to "off" regardless of their position. Factory programming of the battery 'charger' only feeds out 80% of rated by default so even leaving the bank on will not trip the PPOB limits.

The vids are wholly useless when it comes to knowing what exact parameters his unit is programmed with.

 

[Davexxxx]

In other words, there is no inherent incompatibility with Ford's PPOB and an MP.

Just gotta find why there is a problem with the 2 in this thread.

 

[Davexxxx]

The "power assist" feature is what cannot be enabled(or triggered) w/ the PPOB. Just read through the manual, I'm guessing the TT company puts settings into the unit. If programmed with a computer the dip switches may all be set to "off" regardless of their position. Factory programming of the battery 'charger' only feeds out 80% of rated by default so even leaving the bank on will not trip the PPOB limits.

The vids are wholly useless when it comes to knowing what exact parameters his unit is programmed with.

I really wish I had a long play video camera, so I could show you that it will function properly.

I agree and suspected from the beginning, that there was possibly a programming issue, which is why I've suggested several times, to use the programming vid I posted.

 

[HammaMan]

In other words, there is no inherent incompatibility with Ford's PPOB and an MP.

Just gotta find why there is a problem with the 2 in this thread.

I don't disagree.
1) Verify programming of the inverters
2) Load test the vehicle. 1 heat gun on high and one on low should be able to get right about to 2.3kW which the 2.4 system can easily handle.

Also Dave -- have you tried current limiting with the "power assist" feature enabled and loaded it up? I want to verify the claims of another user who tried paralleling the PPOB w/out success. In theory it should be able to work so long as the other inverter is smart about its capabilities. Try and limit the incoming as low as it will go and see if the victron can still start the AC when PPOB is limited to ~8 amps. There's no substitute for 100% accuracy.

 

[Davexxxx]

I don't disagree.
1) Verify programming of the inverters
2) Load test the vehicle. 1 heat gun on high and one on low should be able to get right about to 2.3kW which the 2.4 system can easily handle.

Also Dave -- have you tried current limiting with the "power assist" feature enabled and loaded it up? I want to verify the claims of another user who tried paralleling the PPOB w/out success. In theory it should be able to work so long as the other inverter is smart about its capabilities. Try and limit the incoming as low as it will go and see if the victron can still start the AC when PPOB is limited to ~8 amps. There's no substitute for 100% accuracy.

My system is big enough to run the AC sans shore power.

In the app, limiting input is one of the few things you can easily do on the MP and I usually leave a couple amps of headroom, wherever I was plugged in.

I have run the Air con and central vac at the same time as a test and it will do it for a quick clean up but not for cleaning the whole camper. The MP trips after several minutes. Air con and microwave is as I recall, doable but close to max.

I can drain the batteries some, plug it into the truck and put loads on it but all I can do is snap pics. If that will suit you.

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