Why is my generator putting out high voltage

Apr 08, 2013 · Just as an athlete might put out a burst of extra energy in a sprint for a few seconds, a generator can do the same thing and put out a surge of extra power for a few seconds. This extra capacity allows it to start electric motors which require an initial boost of power to start turning. Some common reasons are : 1). Load applied to generator exceeds capacity, typically would cause machine to slow down, drop frequency and voltage typically cause exhaust black stacking and depending on the overload and protection settings could cause machine to stall. 2). Read the meter display panel to find out if your 6-volt generator is producing the correct voltage. If it reads between 7 and 8 volts, it's working correctly. The reading is higher, as generators produce slightly more electricity than labeled to allow for resistance in the cables. Aug 29, 2015 · I put in a resistor between the battery positive to my amplifier power line and it reduced the voltage by 1v, so about 15v max now. The amplifier stays on now but there's another problem. The speaker starts stuttering when the volume is up and it has to play sustained low notes, so I think the resistor isn't allowing enough amps through. AC voltage can be measured across the capacitor(s) while the generator is operating. This voltage may be as high as 400 to 500 voltS AC. This voltage buildup is accomplished as the exciter windings charge the capacitor(s) and the capacitor(s) discharge back into the exciter windings. This AC voltage Set the generator MLCB (generator disconnect) to OFF (OPEN). Allow the generator to run for a cool-down period of approximately one minute. At the controller, set the generator to OFF. Remove the 7.5A fuse from the controller. To turn the generator back ON: Install 7.5A fuse in controller. Jun 01, 2013 · 1) Over voltage on a generator is typically caused by one or a combination of the following: Faulty Voltage Regulator and needs to be replaced Frequency (hertz) of the generator is not properly set. During our recent hurricane here on the East Coast I had a problem with my portable generator. It has been very reliable for ten years, but this time it was working fine, then the engine cut out with a load on it. Then after restarting - the voltage slowly dropped until it was only producing almost ... If in fact it is putting out too much voltage, you can reduce the voltage with the little pod on the regulator, it is blue on the ones I've worked on. Has anyone messed with the carb? If the engine speed is too high it will produce too high voltage. If you do go for the pod, adjust it down to 127 128 volts at 61/62 hrz. unloaded. watch as MM1 properly diagnoses a generator that has an AVR I have a 20KW diesel generating set with a problem maintaining constant output voltage. The generator is supposed to put out 120/240 volts, but sometimes puts out 100/200 volts and sometimes does not generate at all. If I boost the excitation circuit with external power it will start generating again, but it is unreliable. Sep 13, 2012 · OK, my new multimeter checks Hertz. With the A/C on high cool, voltage at the breaker is 127 volts and 75 Hertz. If the meter is picking up additional noise I don't know. OEM is supposed to be 60 Hertz. I'll try to check it at the generator tonight. It's not hot enough right now to really test the breaker out. That's why it's impossible to "tune a generator by ear" like we used to do with lawnmowers and other small gasoline engines. Many well-meaning handypersons have a habit of trying to adjust the RV generator to make it "run right." Unfortunately, this only results in a poor running machine and/or incorrect output voltage, etc. AC voltage can be measured across the capacitor(s) while the generator is operating. This voltage may be as high as 400 to 500 voltS AC. This voltage buildup is accomplished as the exciter windings charge the capacitor(s) and the capacitor(s) discharge back into the exciter windings. This AC voltage My generator is a Coleman Powermate 1850. It is putting out 127 volts. My power converter is a WFCO brand WF-8835. When it is plugged in shore power (tested at 120 volts) it is putting out 13.69 volts of charging power. I checked this power at the converter while disconnected, and at the battery holder location. Apr 24, 2014 · Just as a note, normal voltage range is +/- 10% not 5%. So 120 volts +/- 10% is up to 132 volts. Yes, your generator is on the high side, but it is within tolerance. You have also seen how the voltage will drop when you put a load on it. The actual charging voltage designed into a voltage regulator is dependent upon factors such as how far the alternator is located from the battery and the ambient air temperature surrounding the battery as calculated by the PCM. This is why the ambient and underhood temperatures are critical data for the charging system. Adjust the throttle of the generator to increase or decrease RPMs of the machine's motor. Slowing the RPMs decreases the voltage output; increasing RPMs increases the voltage output. The throttle is normally located on the top or side and has RPM written on it. The little bit of magnetism is enough to produce a small amount of electricity. This small amount of electricity is needed to create an even stronger electromagnet. As the engine turns this magnet moving its electric field, through the stator windings, your generator produces even more power. Set the generator MLCB (generator disconnect) to OFF (OPEN). Allow the generator to run for a cool-down period of approximately one minute. At the controller, set the generator to OFF. Remove the 7.5A fuse from the controller. To turn the generator back ON: Install 7.5A fuse in controller. The newer voltage regulators are "capped" at 132 volts. This means that they stop sending current/voltage to the slip rings when that voltage is reached. If your voltage is higher, replace the regulator or check the sensing input from the hot generator leads. Mar 15, 2013 · I have a troybilt portable generator that will not put out electricity. I have flashed the unit twice and not change. I put a meter in the receptacle and was getting 2.9 to 3.0 volts. Replaced the regulator and flashed again same results. Any idea AC voltage can be measured across the capacitor(s) while the generator is operating. This voltage may be as high as 400 to 500 voltS AC. This voltage buildup is accomplished as the exciter windings charge the capacitor(s) and the capacitor(s) discharge back into the exciter windings. This AC voltage The capacitor has two functions; it induces voltage into the rotor as well as regulates voltage. A bad capacity will result in a low voltage reading from the generator as the power being generated will be from the residual magnetism of the rotor (usually about 2-5V). To test a capacitor, a multi-meter that can test capacitance is required. Sep 13, 2012 · OK, my new multimeter checks Hertz. With the A/C on high cool, voltage at the breaker is 127 volts and 75 Hertz. If the meter is picking up additional noise I don't know. OEM is supposed to be 60 Hertz. I'll try to check it at the generator tonight. It's not hot enough right now to really test the breaker out. Generators can only put out a finite amount of power. Companies use watts to rate a generator's output. The wattage is calculated by multiplying the voltage by the electrical device's load capacity in amperage (Watts = Volts x Amps). For example, a generator may be listed as 1,500 watts delivering 120 volts. Amps = Watts / Volts My generator is a Coleman Powermate 1850. It is putting out 127 volts. My power converter is a WFCO brand WF-8835. When it is plugged in shore power (tested at 120 volts) it is putting out 13.69 volts of charging power. I checked this power at the converter while disconnected, and at the battery holder location. That's why it's impossible to "tune a generator by ear" like we used to do with lawnmowers and other small gasoline engines. Many well-meaning handypersons have a habit of trying to adjust the RV generator to make it "run right." Unfortunately, this only results in a poor running machine and/or incorrect output voltage, etc. The electrician measures similiar readings at the transfer switch with the cables connected to the 240V Generator output. Is there a problem with the generator? We do not get 122V between hot and neutral on one side when measured inside the house. The electrician thinks the generator is "bad". However we get proper voltage from hot to nuetral. This is almost always a bad voltage regulator (AVR). On that model generator, we call them pre-nexus, the controller didn't monitor output voltage, just basic things like engine speed, oil pressure, engine temp, etc. The voltage regulator was a separate device and system all together. Apr 08, 2013 · Just as an athlete might put out a burst of extra energy in a sprint for a few seconds, a generator can do the same thing and put out a surge of extra power for a few seconds. This extra capacity allows it to start electric motors which require an initial boost of power to start turning. The actual charging voltage designed into a voltage regulator is dependent upon factors such as how far the alternator is located from the battery and the ambient air temperature surrounding the battery as calculated by the PCM. This is why the ambient and underhood temperatures are critical data for the charging system. A phase goes to the battery charging side of the inverter charger and B phase goes to the House Power side of the inverter charger. When the generator is running, I get a large voltage fluctuation from 108v to 127v and this causes the lights to fade in and out. If your internally regulated alternator is putting out 16CV thenn it is bad. That muc voltage ouptut will fry a battery in no time. The battery will hold to about 14V for a while and then gradually go up from there. As it does so,m the alternator will be putting out its full charge rate and you will heat the battery a whole lot. Apr 24, 2014 · Just as a note, normal voltage range is +/- 10% not 5%. So 120 volts +/- 10% is up to 132 volts. Yes, your generator is on the high side, but it is within tolerance. You have also seen how the voltage will drop when you put a load on it. Locate the voltage regulator inside the generator's control box. Test the voltage regulator's pin 7 with a voltmeter. The instrument should display 12 volts on pin 7. Attach the voltmeter to the motor's brushes. The voltmeter should reflect 10 to 11 volts across the brushes. The voltage regulator has failed if the voltmeter displays no voltage ... Dec 16, 2018 · Reasons for the lower and lower generator voltages and their treatment methods: 1. Reason: The generator prime mover speed is too low. Treatment: Adjust the generator prime mover speed to the rated value. Jun 08, 2010 · i dont know but i can tell you how they work. first off the power you get to your house and all of the power that is supplied in an electrical companys grid is supplied by a generator. the portable generator you have works the same way. they work like this- now when you place a conductor (metal, copper, silver, gold, ect.) in a magnetic field electricity is produced in that conductor. then ...