RJsfishin
Winston Or.
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Joined: 10/16/2007
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Wayne and Sam are right,.....as usual.
Rich
'98 Flair, 454, Onan Microlite 4k, Intel PD 9155 w/ wizard, Sta-power 1500 watt Inv, 2 6v batts, ammeters, KingDome/sat, Oly Catalytic Heat, hauling 2 Bent Bikes and sometimes towing a Tracker F&S boat.
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Salvo
California
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Joined: 06/01/2008
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Your numbers (as well as others) just don't add up. The gen is RATED at 300W, 350W is PEAK power. The converter has an efficiency of 85% and form factor of 0.7.
Max current = P * efficiency * form factor / V_converter
Max current = 300W * 0.85 * 0.7 / 14.2V
Max current = 12.6A
There's no point in using this converter. It would be a hassle to always pre-charge the batteries using other methods before you can use the PD9245. I would use a 10A or perhaps 15A battery charger. I think you'll get a much faster charge. After all, you want to minimize gen time.
Sal
Golden_HVAC wrote:So I could program it to limit charge rate to 21 amps, and stay below the 350 watt output rating.
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Hurricaner
Hurricane Utah
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Joined: 02/17/2007
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Salvo wrote:Your numbers (as well as others) just don't add up. The gen is RATED at 300W, 350W is PEAK power. The converter has an efficiency of 85% and form factor of 0.7.
Max current = P * efficiency * form factor / V_converter
Max current = 300W * 0.85 * 0.7 / 14.2V
Max current = 12.6A
There's no point in using this converter. It would be a hassle to always pre-charge the batteries using other methods before you can use the PD9245. I would use a 10A or perhaps 15A battery charger. I think you'll get a much faster charge. After all, you want to minimize gen time.
Sal
Golden_HVAC wrote:So I could program it to limit charge rate to 21 amps, and stay below the 350 watt output rating.
Sal, I know you love formulas but they don't always work. In this case as the gen voltage gets dragged down the converter output amps go right down with it. That and the the bad sine wave further reduce the output. On my 1000 watt you can't overload it as it just reduces its speed until the voltage drops enough that the converter can no longer put out enough amps to overload it. Of course you better not be running anything else as the voltage is sometimes below 100. It's pretty crude but it does work. Of course this same scenario on an inverter gen will result in an overload just as your formula suggests.
Sam
Sam & Kari
Hurricane, Utah
2004 34' Damon Challenger 315
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Oldtymeflyr
Littleton, CO
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Joined: 04/18/2004
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The EX 350 is an inverter generator.
Does that make a difference?
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Brodie3Az
Chandler, Arizona
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Hello Oldtymflyr,
Your generator will not power your PD9245. Your generator put out a maximum 325 watts and the inverter/charger requires an input of 725 Watts from a 120V power source. Clicky
You will need a generator similar to the Honda EU1000 to run your inverter/charger.
Although the 350 also can provide 12volt power, it is not regulated like a battery charger, and can cause damage to your 12Volt batteries.
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Salvo
California
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Man, here I thought you guys were experts. LOL
We're talking about an inverter generator. AC output voltage gets REGULATED.
You're right, I do love formulas. That's how I was schooled. Do the calculations first in order to understand the issues. It hasn't failed me yet.
Oldtymeflyr - You won't destroy anything by testing it. Connect your little gen to the RV. Let the converter do its thing. If the batteries are more than 70% charged the gen circuit breaker will probably not trip. If the battery is discharged 50% to ~12.0V then the breaker will blow. It shouldn't hurt anything though.
Try it and report back.
Sal
Hurricaner wrote:Sal, I know you love formulas but they don't always work. In this case as the gen voltage gets dragged down the converter output amps go right down with it. That and the the bad sine wave further reduce the output.
Sam
* This post was
edited 11/14/09 05:32pm by Salvo *
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Wayne Dohnal
Bend, OR.
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Joined: 03/09/2003
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Quote:The EX 350 is an inverter generator.
Does that make a difference? It makes all the difference in the world. The EX350's MSW output has a peak voltage of about 140 as compared to about 170 for a 120 volt sine wave, which is why the converter will not attain its full output power. The converter is dependent on the peak voltage. If the EX350 had a sine wave output the converter would try to run at full power and overload the generator. You're in somewhat uncharted waters with your combination and nobody's going to know the EX350 and converter play together unless they've observed it previously.
2009 Fleetwood Icon 24A
LinkPro battery monitor
EU2000i generator
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smkettner
Southern California
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Joined: 03/21/2005
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IMO you will be better off with a portable 10 or 15 amp automatic charger between the gen and battery.
2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
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wa8yxm
Wherever I happen to park
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Depending on the Honda's capacity there are only two possible answers to the "What will happen" question
1: It works:
2: It don't.
If it don't the breaker on the Honda should trip.. No damage
NOTE: a honda EU1000i (Which is NOT a 1,000 watt generator, I think 760 continous watts) can run a 9260 or 9160 you have 45 (3/4 of that) so if your honda is at least 500 watts continuous.. You should be good to play.
Nothin adds excitment like something that is none of your business
Kenwood TS-2000 housed in a 2005 Damon Intruder 377
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Salvo
California
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I originally thought this inverter gen has a "normal" sine output. It does not. It has a simple square wave (140Vp) output. The converter depends on getting 170Vp (for proper function). Minimum converter input voltage is 105 V rms.
105 V rms * 1.414 = 148Vp
This voltage is right on the edge of functionality. It may not work at all.
For the same reason, a 10A battery charger may also not work. You need to try it out. This is still your best bet.
Sal
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