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  #1  
Old 08-04-2019
LeRoy LeRoy is offline
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Default Inverter low voltage output?

I just finished installing a new refrigerator so I’ve been digging around in the electrical system quite a bit. We are getting 105 volts when on the inverter. I don’t know what the operating range of most appliances is but that sounds pretty low to me. Our inverter is the Heart freedom 25. Does anyone know if the output voltage is adjustable? We’ve not had any trouble operating anything so far. What do you guys think?
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LeRoy Brown
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1995 BMC 37 “MockingBird”
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  #2  
Old 08-04-2019
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Trees Trees is offline
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Hi Leroy, do you have the manual for your Heart? If so, on page 28 it references low voltage output. It says to use a true rms voltage meter to get an accurate reading. The manual is available to download. Other than that it makes no reference to adjusting the output voltage, that I saw anyhow. It also says if true rms meter is not available to use an incandescent bulb and look at its brightness. Good luck
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Tim Rees
Elida, Ohio
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F110660
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  #3  
Old 08-04-2019
LeRoy LeRoy is offline
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Thanks Tim, i’ll Look that up.
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  #4  
Old 4 Weeks Ago
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hansruys hansruys is offline
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Just wondering what the final outcome was on this thread,
I am at the same stage as the original poster,
Samsung refrigerator install, 8 new T105 batteries and

getting 104 volts from the Trace 3012 inverter,
what puzzles me even more is when I start the Detroit

inverter voltage drops to 99 volts.
With the generator running I'm getting 122 volts.
The troubleshooting section of the manual also refers to using a true RMS meter.

none of the three volt meters I have are true RMS meters.
Is it as simple as buying a true RMS meter or do I have bigger issues?
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  #5  
Old 4 Weeks Ago
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gcyeaw gcyeaw is offline
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Quote:
Originally Posted by hansruys View Post
Just wondering what the final outcome was on this thread,
I am at the same stage as the original poster,
Samsung refrigerator install, 8 new T105 batteries and

getting 104 volts from the Trace 3012 inverter,
what puzzles me even more is when I start the Detroit

inverter voltage drops to 99 volts.
With the generator running I'm getting 122 volts.
The troubleshooting section of the manual also refers to using a true RMS meter.

none of the three volt meters I have are true RMS meters.
Is it as simple as buying a true RMS meter or do I have bigger issues?
Begin with the right tool, a true RMS meter. Otherwise you will never know what is really there.
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86 PT-36 Golden Memories
83FC35 SB $IXTEEN TON$ SOLD
78 FC 33 Happinest (Sold)
Ridgewood, New Jersey
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  #6  
Old 4 Weeks Ago
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1984Lodge 1984Lodge is offline
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Curios, where are you reading this voltage? The reason for true rms is that this is a modified sine wave inverter. This is a chopped wave instead of a nice smooth wave, so the reading is not going to show 120v on a non rms meter.

I just purchased this meter to keep on the bird:
Klein Tools CL380 Digital Clamp... https://www.amazon.com/dp/B07P323914...p_mob_ap_share

Nice thing about this meter is you can read DC amps with the clamp on meter. This is pretty cool feature so you can check the amount of your DC draw on any line up to 400 amps. If your around in Florida I would be more than happy to bring a meter to check it.

As far as the voltage dropping when starting, that sounds normal. Your DC voltage is going to drop when starting so that means the inverter AC voltage will drop as well.
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Jeff LoGiudice
1984LodgeJeff@gmail.com
Temple Terrace, Florida
1984 Bluebird PT40
#F063411 6V92TA & MT654CR
& 1986 MCI 102A3
6V92TA & HT740 (Sold)
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  #7  
Old 4 Weeks Ago
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hansruys hansruys is offline
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Thanks Jeff, I'm actually just across the bridge from you.

I'm taking the ac voltage readings from various wall receptacles
throughout the bus and it's a consistent 105v.

Gardner is right, pure logic, I need the right tools
and that's an attractive price on the clamp meter.

I just bought a Klein meter for the bus, after I fried my amprobe,
should have spent another $20 and got a true rms reader,
but honestly I had never heard the term "rms"until about a week ago.

Eventually I'm going to put a pure sine in for the refrigerator,
but my "money tree" only produces a few leaves at a time,
so I've got to space things out.

I'll get this figured out, thanks for pointing me in the right direction!
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  #8  
Old 4 Weeks Ago
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1984Lodge 1984Lodge is offline
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Quote:
Originally Posted by hansruys View Post
Thanks Jeff, I'm actually just across the bridge from you.

I'm taking the ac voltage readings from various wall receptacles
throughout the bus and it's a consistent 105v.

Gardner is right, pure logic, I need the right tools
and that's an attractive price on the clamp meter.

I just bought a Klein meter for the bus, after I fried my amprobe,
should have spent another $20 and got a true rms reader,
but honestly I had never heard the term "rms"until about a week ago.

Eventually I'm going to put a pure sine in for the refrigerator,
but my "money tree" only produces a few leaves at a time,
so I've got to space things out.

I'll get this figured out, thanks for pointing me in the right direction!
Yea the right tool many times makes the difference.. by the way for those who are interested, rms stands for root means squared, that’s how the meter comes up with the proper voltage reading.

Yea a pure sine is better for almost everything and they are more affordable today.. Good luck, hope this helps.
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Jeff LoGiudice
1984LodgeJeff@gmail.com
Temple Terrace, Florida
1984 Bluebird PT40
#F063411 6V92TA & MT654CR
& 1986 MCI 102A3
6V92TA & HT740 (Sold)
YouTube-Gino's Garage https://www.youtube.com/user/xjrjeff
http://www.bbirdmaps.com/index.cfm #460
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