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April Smith Posted on Jun 19, 2019
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Generator runs but isnt producing electricity

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sherlywang

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  • Electrical S... Master 428 Answers
  • Posted on Aug 19, 2019
sherlywang
Electrical S... Master
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Joined: Oct 20, 2017
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Here is the solutions for your question:

1. Measuring whether there is real electricity, the generator replaces the voltmeter.
2. Put it into automatic or manual mode.
3. Check and correct according to the circuit diagram.
4. New generators or machines that have not been used for a long time appear easily. They can be charged by charging buttons on the control screen or by 12V batteries. The positive pole is connected to F1 and the negative pole is connected to F2. If the voltage can not be established, the positive and negative poles of the batteries can be changed and retried.
5. Cleaning is the surface of the ring. The end surface of the carbon brush is sanded so that it coincides with the arc on the surface of the collector ring more than 70% and the spring pressure is strengthened.
6. Clean carbon brush and carbon brush grip make carbon brush move freely.
7. Check the forward and reverse resistance of the diode with the multimeter, such as damage and replacement.
8. Use a multimeter to check if the forward and reverse resistances do not meet the requirements of diode characteristics. If the resistance value is infinite, the multimeter 1K for diesel generator sets should be turned on. Then use one Eurometer to check if the resistance value is zero, replace or handle the windings. If the resistance value is not stable, check whether the connection of the joint is loose.

https://www.dieselgeneratortech.com/generator-set

5 Related Answers

Phil Rivera

  • 83 Answers
  • Posted on Mar 30, 2009

SOURCE: Runs great but will not produce electricity

To flash the excitor circuit on a coleman ( the generator is built by generac) you need a 12 volt battery. You quickly apply 12 volts via your 120vac recepticals. NO MORE THAN ONE OR TWO SECONDS! Then check you ac voltage. Most of the time the brushes are burnt up when voltage is low. Check the brushes first. You can access them by taking the end cap off of the generator via two to four screws. The brush holder is easy to spot, two wires leading to the front of the amature. Hope this solves your problem.

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Anonymous

  • 154 Answers
  • Posted on Jun 14, 2009

SOURCE: Generator stopped producing electricity

if the generator has been sitting for a while you might have to excite the magnets to start producing power. plug in a reversible drill and with the generator running turn the drill in the reverse direction by hand while holding the trigger in the forward position.

Anonymous

  • 108 Answers
  • Posted on Jul 01, 2009

SOURCE: I have an older b&s generator, and yesterday

It possibly could be the Brushes in the generator just wore out and need to be replaced. 
bigc

Sheldon Dedek

  • 912 Answers
  • Posted on Nov 27, 2009

SOURCE: Porter Cable Generator does not produce electricity

Here are a a few possibilities to look at:

1) Bad connection at the outlets themselves (loose wire) regarding neutral, hot wires.

2) Bad Excitation Capacitor. The Exc. Cap. is responsible for energizing the field wiring of the alternator. If the field is not energized, there will not be a magnetic field developed, therefore, no electrical output.

3) Open Field / Stator winding. If Field winding is open, no magnetic field will be developed. If Stator winding is open, no voltage will be induced.

4) Generator speed is too slow. If the RPMs of the engine are too slow, the output of the alternator will fail as well. Note that from normal speed, voltage output will occur but at reducing frequency until ouput ceases altogether, usually at about 47Hz. If your alternator is a 2 pole, engine speed should be 3600 rpm nominal. If alternator is a 4 pole (most aren't), engine speed would need to be about 1800 rpm nominal.

5) Generator speed too fast. If RPMs are too fast, output may fail as well. See above.

6) Excitation Fuse has blown. There is sometimes a fuse in the excitation circuit. To check this, you will likely need to pull the end housing off the alternator. Pay attention to bearings / bushings.

thesnooper

  • 342 Answers
  • Posted on Apr 04, 2010

SOURCE: Wolf 800 generator. Engine will run but very electrical power is

is the engine running at the correct speed
3000 rpm to produce 50hz
3600 rpm to produce 60hz

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Generator runs wide open, produces plenty of voltage, but it will not idle down if not drawing any amps

it does not idle when not loaded, generator have to run open to produce power when needed. contact mfg. for more into
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Powerland tri fuel generator does not produce electricity

The most common cause of portable generators failing to produce electricity is from the loss of residual magnetism. Generators work by moving electrical conductors through a magnetic field. Your generator does not have magnets. ... When the residual magnetism is lost, the generator will produce no power at start-up.

There are a few methods of restoring a generator residual magnetism


12 Volt Generator Battery Method

Locate the voltage regulator for your generator.Unplug the two wires that connect to the generator brushes. Normally one is red and the other is black or white.Connect the black or white to the generator ground battery terminal.Plug in a light, turn on the generator breaker or switch and start the motor.Connect the battery +12 volts (red cable) to the red wire on the terminals you removed for three seconds.Remove your wires and replace the plug. The generator should now be producing power again.

Make sure you unplug the brush wires from the automatic voltage regulator or you will damage the regulator. Do not contact the voltage regulator or other wires as dangerous voltages may be present that can cause electric shock.
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My gp2500 will not make power

Is there any inline fuses that may have tripped. I had a similar problem many years ago and I needed to have the internal windings restrung / rebuilt. After this procedure my unit ran flawlessly and even above normal spec outputs
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Craftsman 5600 watt generator AVR Location? It does not appear to be inside the cover of alternator.

The most common cause of portable generators failing to produce electricity is from the loss of residual magnetism.

Generators work by moving electrical conductors through a magnetic field. Your generator does not have magnets. The magnetic field is created by taking some of the generator output voltage and converting it to DC and feeding it to a coil to make an electromagnet.

When there is a small amount of magnetism left over from the last time the generator was running, it is called residual magnetism. 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 electric magnet. As the engine turns this magnet moving its electric field, through the stator windings, your generator produces even more power.

When the residual magnetism is lost, the generator will produce no power at start-up. This residual magnetism can be lost naturally from not being used or from the load on your generator being connected when the generator is shut off. It can also happen from running a generator with no load for too long.

Generators need to work and it helps maintain that residual magnetism. When they are running, a load should be connected to it. It helps create an even stronger magnetic field. Before you shut it off, turn off the switch or breaker to disconnect the load. If you shut off a generator with the load connected, it can essentially drain or demagnetize the electromagnet. Try and avoid running out of fuel.

How to fix it:

There are a few methods of restoring a generator residual magnetism

12 Volt Generator Battery Method

Locate the voltage regulator for your generator.
Unplug the two wires that connect to the generator brushes. Normally one is red and the other is black or white.
Connect the black or white to the generator ground battery terminal.
Plug in a light, turn on the generator breaker or switch and start the motor.
Connect the battery +12 volts (red cable) to the red wire on the terminals you removed for three seconds.
Remove your wires and replace the plug. The generator should now be producing power again.
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My generator isnt kicking down when its supposed too, it runs at continuous speed

An AC generating set runs at a continuous speed in order to produce current at the correct Hz - 60Hz in the USA and 50Hz almost everywhere else.

The built-in governor will maintain the preset speed, opening and closing the throttle automatically as a load is plugged in or removed.
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Why don't my generator fg7000ma generate power or only half power

Why a generator won't produce electricity?
After the unit is running, the generator rotational speed reaches the rated speed, the AC exciter stator excitation circuit switch is closed, the voltage regulator is raised to the maximum direction, at this time, the generator has no output voltage or the voltage is very low. That's why a generator fails to produce electricity.
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Wolf 800 generator. Engine will run but very electrical power is

is the engine running at the correct speed
3000 rpm to produce 50hz
3600 rpm to produce 60hz
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Generator produces no power

Glad to hear it was easy :-)
Here is a link to my trouble shoot solution so that this will get marked as solved.
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Engine runs but won't generate any electricity

Sometimes the generator loses the magnetic field that allows it to produce power. Do a Google search on "flashing a generator field". There are many ways to do it, but I would recommend doing some reading before trying it. Your "dead" generator could produce hazardous voltage once it comes back to life.

Also, before trying any of this, make sure the circuit breakers on the generator (if equipped) are not tripped.

Good luck and be careful!
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