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Honda, Yamaha, Kawasaki, Isuszu Generators

Suzuki SE1800AD Generator Issues


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  #11  
Old 04-22-2018, 04:23:18 PM
doctle odd doctle odd is offline
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Default Re: Suzuki SE1800AD Generator Issues

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Originally Posted by Thaumaturge View Post
Likely it is a harmonically excited generator, meaning your output voltage is set with the capacitor. That is if your rotor doesn't have any brushes. If you have brushes, then output voltage is set by AVR. I've never seen a circuit that has both AC capacitor and AVR, but I guess it is possible.
Look up the Wiki page for harmonic excited generator.
Doc
You can see the regulator and capacitor in the photos it's maybe some type of an early hybrid? I have checked the brushes they are fine showing 5 volts with the regulator disconnected
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  #12  
Old 04-22-2018, 08:01:32 PM
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Default Re: Suzuki SE1800AD Generator Issues

If it has brushes, it is indeed AVR regulated. Cap is probably a DC filter.
Doc
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  #13  
Old 04-23-2018, 04:14:00 AM
doctle odd doctle odd is offline
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Default Re: Suzuki SE1800AD Generator Issues

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Originally Posted by Thaumaturge View Post
If it has brushes, it is indeed AVR regulated. Cap is probably a DC filter.
Doc
Im not sure what a dc filter is or what it does? I know that AVR's have a little adjustment screw and mine doesn't so I will try the new AVR when it arrives. Oddly I'm only getting 10.5 volts at the 12 volt outlet
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  #14  
Old 04-23-2018, 05:22:36 AM
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Default Re: Suzuki SE1800AD Generator Issues

To excite field winding on rotor, DC voltage of some value is fed through brushes. To get that voltage in the first place, there is an auxillary winding in stator. This is rectified with either separate diodes, a full wave bridge, or internal diodes within the AVR circuit. This rectified voltage may be smoothed out with a DC filter cap(acitor). DC caps are usually electrolytic type, which MUST be connected only one way (or they physically BLOW UP). Thus they have polarity markings on them.

Given what you have described thus far, yes a new AVR is likely needed.
Doc
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  #15  
Old 04-23-2018, 07:32:27 AM
doctle odd doctle odd is offline
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Default Re: Suzuki SE1800AD Generator Issues

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Originally Posted by Thaumaturge View Post
To excite field winding on rotor, DC voltage of some value is fed through brushes. To get that voltage in the first place, there is an auxillary winding in stator. This is rectified with either separate diodes, a full wave bridge, or internal diodes within the AVR circuit. This rectified voltage may be smoothed out with a DC filter cap(acitor). DC caps are usually electrolytic type, which MUST be connected only one way (or they physically BLOW UP). Thus they have polarity markings on them.

Given what you have described thus far, yes a new AVR is likely needed.
Doc
The new AVR I ordered doesn't have the DC Filter would that matter? I have emailed the photographs of the end of the generator to several people that do sales repairs and parts none of them have the parts or have any clue where to get them. The DC filter on my AVR is hard wired into it
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  #16  
Old 04-23-2018, 08:21:17 AM
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Default Re: Suzuki SE1800AD Generator Issues

If your error is too high an output voltage, problem not likely to be a DC filter cap. A bad cap symptom would likely be output too low, not too high. Just try new AVR and don't worry about cap.
Doc
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  #17  
Old 04-23-2018, 09:17:01 AM
doctle odd doctle odd is offline
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Default Re: Suzuki SE1800AD Generator Issues

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Originally Posted by Thaumaturge View Post
If your error is too high an output voltage, problem not likely to be a DC filter cap. A bad cap symptom would likely be output too low, not too high. Just try new AVR and don't worry about cap.
Doc
Thanks Doc youre a gentleman!
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  #18  
Old 04-28-2018, 06:39:13 AM
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Default Re: Suzuki SE1800AD Generator Issues

So the regulator arrived but it's the wrong regulator why would I be surprised at that? It was posted in the UK but returns go to China it was cheap so I'll keep it. The generator will do for lights or the well pump. Cest la Vie
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