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What causes a generator to fail produce electricty

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Most of the time it is either the Capacitor or AVR that has blown. Check out our videos on how to test them.
We hold a full range of Generator AVRs and Capacitors.
https://www.generatorguru.com
If you need help testing let us know. We have a whole Help Center dedicated to helping people fix their Portable Generators. Check it out on our site. https://www.generatorguru.com/

Parts Spares for Generators and Small Engine Machinery
What causes a generator to fail produce electricty - image-2fwsrbehqcya13uxwt41l5dc-1-0_6.jpg

Posted on Aug 19, 2019

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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.

Jul 27, 2018 | Electrical Supplies

Tip

Generator runs great but produces no power


On Thursday last week I had 220 amp outlet being used and a 110 amp outlet being and overloaded the generator. It turned out to be the reset breakers failed to trip and blew the capacitor. The reset breakers I would suggest replacement after 7 years very easy to do on a 5500 Valsi generator 2010 model still running and now producing electric. And of course use only regular gas non Ethanol.

on Aug 19, 2015 | Electrical Supplies

1 Answer

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.

May 31, 2015 | Electrical Supplies

1 Answer

Why it want make electricty are load up?


Must be up to full running RPM to generate the right operating voltage. If it is running at full throttle and there is no power out, then the generator head needs to be repaired.

Feb 06, 2014 | Coleman Electrical Supplies

1 Answer

How does water create electricity!!!!!!!!!!! KEEP CALM AND ANSWER THE QUESTION!!!!!!


Water is used to spin commutators in armatures of generators which in turn produces electricty. For example: Niagra Falls helps generat electricity. Do a search on Niagra Fall generators.

Oct 09, 2013 | Android Apps

1 Answer

Generator will not put out electricty


I would recommend you take it to someone who can diagnose it for you. it could be, but it could also be many factors. It maybe worth a $50 diag fee. Causes can be too numerous to post

Dec 02, 2012 | Coleman Powermate Premium Plus 6250W...

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Backfire problems


If your genset is back firing then it could be carberator, bad ingnition coil, fuel pump, poor compression, which should be at least 100 psi.

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How to make electricty


Use a generator to make the voltage.

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1 Answer

My NorthStar 5500 generator head no longer produces any electrici


Specs do not mention a maximum safe rpm but the recommended shaft speed is 3600rpm. Even though it isn't a premium product I can't imagine the manufacturer would be so foolish as to design it so it breaks if that speed is exceeded by a reasonable amount for a short amount of time. The big question is what is a reasonable amount - I reckon a safety margin of 25% would be reasonable for a budget priced product and up to 40% for a premium product.

Over-revving is unlikely to do very much damage to the stator but the armature is at risk of damage and being brushless or self-energising, unless there is visible damage it is a difficult item to test without dedicated equipment.

I suggest you recheck all plugs, connections and cables and if no faults are found contact the manufacturer or dealer for advice, costs, etc...

May 08, 2017 | Northstar Belt Driven Generator Head 5500...

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