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Go Back   SailNet Community > On Board > Gear & Maintenance > Electrical Systems
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  #1  
Old 04-08-2013
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freedom 2500 watt inverter

Have a Heart Freedom 2500 inverter/charger aboard and was wondering if a 2800 watt generator(27 amps) max was enough to power the charger
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Old 04-10-2013
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Re: freedom 2500 watt inverter

Re generator size (2800 watt)
Probabley not. When the generator is charging the batteries it it must also handel the AC loads. A 2800 watt generator will barely handel the possible 2500 watt AC load that the inverter can - let alone adding a 150 amp charger to the load. ("A freedom 2500 has a built in 150 amp charger and transfer switch" from spec sheet)
(150 amp X 14.2+ volts = 2130 watts and then you add power loss in the charger of est. 20% so 2130 watts /.80 = 2262.5 watts just to run the charger.)
You should look at a 5000 watt range generator or a control unit that limits the generator draw to a user specified level and makes up any short fall using inverter power while charging. (Note that the charging circuit will not be drawing maximum power at all times but the AC system must be capable of providing max. power when required.)
I hope this is not confusing to you and will help you out.
I didn't want to just say get a larger generator without a reason.
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Last edited by norahs arc; 04-10-2013 at 08:23 AM. Reason: correction
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Old 04-10-2013
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Re: freedom 2500 watt inverter

Quote:
Originally Posted by norahs arc View Post
Re generator size (2800 watt)
Probably not. When the generator is charging the batteries it it must also handle the AC loads.
The other loads can be turned off as necessary. Even the Xantrex 3000 watt sine wave inverter/charger works just fine on a 30 amp shorepower connection - both charging and handling loads.
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Last edited by mitiempo; 04-10-2013 at 08:58 PM.
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Old 04-11-2013
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Re: freedom 2500 watt inverter

On our previous boat, I used to run our Freedom 2500 using a Honda EU2000 with no problem. I just had to remember to set the power shareing function on the control panel from 30 amps to15 amps. It worked fine and I only had to watch out for the AC loads like the hot water heater.
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Old 04-12-2013
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Re: freedom 2500 watt inverter

Power Share feature on Link 2000

Depends on whether you have the Link to control the I/C more easily than just the I/O switch on the top of the unit. Brian's right, it will work. A lot of it also has to do with how low your house bank is, battery acceptance will rule the charger role/load.
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Old 04-17-2013
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Re: freedom 2500 watt inverter

I had a Heart 2500 on my boat when I bought it in 1998 which I thankfully got rid of years ago. It would NEVER charge 500AH of batteries at more than 68 amps using a 4.4kw Westerbeke genset. And to do that without tripping the charger, I had to run a hair-dryer to provide about 800 watts of resistive load. Repeated calls to Heart, where I told them about the problem. "You need an 8kw generator." "The book shows a picture of a 4.4kw genset driving the charger." "Huh..... well we changed to book."

The Heart is a highly inductive load with a very poor power factor. Often times the generator must have 3-4 times the capacity that you would think just from running the numbers.
Rick
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