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wacker/kohler 180 Hz 240v genset (HGG)kohler


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  #11  
Old 01-28-2019, 06:35:10 PM
miraclewhip miraclewhip is offline
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Default Re: wacker/kohler 180 Hz 240v genset (HGG)kohler

Bill,thanks for input. I didn't measure the Hz, listed directly on generator nameplate.F urther checking with light,mirror and 3Mpar revealed the folloring;PF 1,PH 3,rpm 3600,twistlock connectors 4post 20A 250-3. Built by kohler for Wacker,Spec#42765-H,kohler controller number A?233821N,class A.Looks like it must be 3Phase,180Hz,230Vac. Controller has both 2 twistlock 4pole sockets, and 2 120v receptacles, with a toggle marked on/off. The 120v recep.mislead me and I failed to test output voltage before plugging in the fridge! ohohoh,won't do that again!!Thanks to everyone who jumped to my aid!!!
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  #12  
Old 01-28-2019, 11:04:24 PM
Vanman Vanman is offline
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Default Re: wacker/kohler 180 Hz 240v genset (HGG)kohler

A lot of times the 120 volt output on these "high cycle" three phase generators was DC. For running series motor tools like drills, grinders, saws, etc, and lighting. Your fridge *really* wouldn't like that!


Have any photos of this set? Would be interesting to see it.
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  #13  
Old 01-29-2019, 02:46:28 PM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: wacker/kohler 180 Hz 240v genset (HGG)kohler

If you would go the rectified-inverter route, couldn't you govern engine speed to load since hz wouldn't matter? Should make an efficient unit.
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Old 01-29-2019, 08:16:45 PM
Zephyr7 Zephyr7 is offline
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Default Re: wacker/kohler 180 Hz 240v genset (HGG)kohler

Quote:
Originally Posted by J.B. Castagnos View Post
If you would go the rectified-inverter route, couldn't you govern engine speed to load since hz wouldn't matter? Should make an efficient unit.
Too low a frequency can be a problem, but not usually as much for a generator as it would be for a motor. You probably wouldn’t be able to use the existing voltage regulator if you do a variable speed setup either. The varying output frequency will also make it a little more complicated to do a good job rectifying into DC, especially if you use a phase controlled rectifier for voltage regulation. Nothing insurmountable though.

Bill
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Old 01-29-2019, 08:42:46 PM
pegasuspinto pegasuspinto is offline
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Default Re: wacker/kohler 180 Hz 240v genset (HGG)kohler

your best bet is to part it out, sell the engine to someone who needs that engine, scrap the copper end, and call it a wash. Or sell it whole. Or keep it as a interesting collectible of history. But converting it is WAY more trouble then it could -ever- be worth.
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Old 01-29-2019, 11:21:14 PM
Vanman Vanman is offline
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Default Re: wacker/kohler 180 Hz 240v genset (HGG)kohler

Well I certainly whole heartedly disagree with that. NOTHING of quality should ever be destroyed and scrapped. That's counter to the whole point of the Smokstak.

Where others see uselessness, or complicated solutions, I see elegantly simple opportunity. Set the governor for 1200 rpm, make the necessary changes to secure adequate excitation. And step up the resulting ~80 volts to 120 volts. That would be FUN!

I have a six pole, self excited, 180 cycle, 230 volt, three phase generator that I plan on performing just such an experiment with. To start with, I'm going to reconnect the six field windings from all in series to three groups of two. This should bring up the excitation adequately at 1200 rpm, and it ought to put out around 75 ~ 80 volts. A variac would be a simple (and adjustable!) way to boost that up.

The beauty of these simple reconfigurations? They are easily reversible, should you come across some neat old 180 cycle power tools!
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Old 01-30-2019, 10:54:34 AM
Zephyr7 Zephyr7 is offline
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Default Re: wacker/kohler 180 Hz 240v genset (HGG)kohler

+1 for not scrapping the unit! The ‘Stak is a community of tinkerers, and we like to fix stuff up and keep things running. I wouldn’t scrap anything unless it was totally destroyed. Just rusty or something like that doesn’t mean it’s junk — look what JohnnyC is able to do with a few tools, the right paint, and his time and skills. His rebuilds look like new!

I’d either keep the 180Hz unit as a curiosity, fix it up and keep it and sell it to someone else, or expieriment with it and build an inverter to make it useful. Lots of options.

Bill

Last edited by Zephyr7; 01-30-2019 at 12:31:12 PM.
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  #18  
Old 01-30-2019, 12:27:09 PM
pegasuspinto pegasuspinto is offline
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Default Re: wacker/kohler 180 Hz 240v genset (HGG)kohler

If you don't scrap some of it, nothing will ever be rare or special! Just in the way........

My point is, that converting it doesn't make sense, especially if you have to buy parts to convert it. Slow it down from 3600 to 1200 RPM? How many useful KW are you going to have at 1200 RPM? If you want a challenge and you have a sizable junk box, it's one thing, for someone who just wants a working, practical generator, that's another thing altogether
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