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08-15-2013, 06:50 PM | #1 |
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Join Date: May 2010
Location: Pine, AZ
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Generator Voltage
Have later style generator after Power House. Set the Current to 8 Amps at high idle, then checked the voltage with a analog voltmeter and it is just over 8 volts which in my opinion is too high. What do other people get at the output of the generator when at this current setting.
Power house is only putting out 2 Volts any ideas as to what to check. Connections all clean and tried holding brushes a little tighter and no change in voltage. Generator was polarized prior to making the measurements at the input to the cutout. Generator worked for a while and all the field coils have continuity and have about the same ohmage in each coil. |
08-15-2013, 09:02 PM | #2 |
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Join Date: May 2010
Location: on the Littlefield
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Re: Generator Voltage
If it is a diode cutout it will be about 1/2 volt higher on the generator side of the cutout, also check the batt side of the cutout, and at the battery ---if there is a 1/2 volt difference between the batt side of the cutout and the battery look for bad connections.
the state of charge of the battery will make a difference in the voltage --fully charged battery will have a higher charging voltage than a almost dead battery the age of the battery will make a difference also --older batteries don't like to charge as much so the charging voltage will be higher in a 3 brush charging system the battery is in essence the voltage regulator |
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08-15-2013, 10:53 PM | #3 |
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Join Date: May 2010
Location: Mpls, MN
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Re: Generator Voltage
In the 5 brush and 3 brush powerhouse generators the ground current travels through the brush wire to the top of the brush spring post, then down to the metal of the mounting leg. I've seen a few where the POST to FRAME connection was bad. I use an Exacto knife to scrape it clean then solder the base of the post to the frame.
8 amps is too high unless you do a lot of short drives and starts. The best solution is an electronic voltage regulator. |
08-16-2013, 05:20 AM | #4 |
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Location: Ottawa ON Canada
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Re: Generator Voltage
I'm confused ... Is the output voltage 8V or 2V, or is the generator 2V and the battery 8V
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08-16-2013, 05:27 AM | #5 | |
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Re: Generator Voltage
Quote:
The most common problem I've seen with the powerhouse is a bad armature and/or broken brush holder. It's pretty rare that a powerhouse has burned field windings because they have 4 ohms on the 5 brush and 3 ohms on the 3 brush, so the currect running through them is much less than the long generator with only about 1 1/2 ohm. |
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08-17-2013, 11:36 AM | #6 |
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Re: Generator Voltage
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08-18-2013, 07:58 PM | #7 | |
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Re: Generator Voltage
Quote:
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