Question about Yamaha Electrical Supplies

Open Question

My yamaha ef 6000 generator runs great but output power is low (about 50% as read on voltage indicator) What can I try?

Posted by Rolando Davila on

Ad

5 Related Answers

John Trevino

  • 1420 Answers

SOURCE: Suzuki SE4000SED generator with no output

There was a day and time when generators were simple. There were no capacitors, regulators to control/adjust power to magnet or ground fault outlets. Winding getting hot indicates short, however could be bad capacitors. Rectifiers and capacitors must be removed from circuit to test properly. Here is a simple test that I use to find fault area. I use a small power supply (16v AC 1 amp like doorbell transformer) into the 110v outlet of generator. This should energize the armature magnet and actually produce voltage at commutator with brushes pulled off. You can slowly pull the starter rope to move the armature into a different positon the voltage will vary. If the ac windings are shorted there will be very little or no magnet. There is a seperate 110 v circuit at the 220v outlet to test (there are two 110v windings that make up the 220v outlet, one is also used for the 110v outlet). There is another winding that products voltage for the regulator that powers the magnet thru the brushes but I think that circuit is porbably working because of the heat in the windings. You might even have 110v power at the 220v outlet. As our parents told us over and over, be careful when working with electricity. Enjoy

Posted on Dec 08, 2008

Ad

Anonymous

  • 1 Answer

SOURCE: I have a Honda EB5000 Generator with no a/c output

first check stator for discoloring .

Posted on Aug 21, 2009

Ad
protek480

Craig Butler

  • 1730 Answers

SOURCE: no output voltage at all

The generator needs to be 'flashed' to bring back the excitation for output. Is this something you can do? Let me know and I can help you...

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Posted on Sep 11, 2009

Sheldon Dedek

  • 912 Answers

SOURCE: Powermate model 544000 generator undervoltage

There are basically 2 possibilities that can cause this.

1) Enigne RPMs are too low. but, since you already played with the throttle, this probably isn't the case. RPMs should be about 3600 though.

2) The voltage regulator / capacitor has high ESR (resistance) or is bad altogether. Replace.

Posted on Jan 04, 2010

Anonymous

  • 2 Answers

SOURCE: no output from my generator

Check the capacitor in the generator head. Will onpen or short cause loss of excitation voltage. Just checked my GENERAC ( no output) and sure enough the cap is shorted.

Posted on Mar 22, 2010

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Yamaha ef 1400 generator runs but not producing power


Check the brush holder for worn brushes. If they seem ok then the voltage regulator has failed.

Oct 31, 2017 | Yamaha Electrical Supplies

1 Answer

Why would my generator engine runs great but it will not power any of my tools. what could be the problem?


With no load on the generator, take a voltage reading at the output plug of the generator, if there is no voltage, check to make sure that no breakers are tripped or fuses blown.

Sep 21, 2014 | NEC Mitsubishi MGE 4000 Generator ROU...

1 Answer

My generac rv generator runs bu no voltage output.


Try putting 12 volts across the commutator at the brushes. Ust a low current battery nor a car storage battery.

Good luck,

Marty

Jul 16, 2014 | Generac 5754 4.8 kW 120/240 Volt PrimePact...

1 Answer

POWER GENERATOR LOW VOLTAGE


How long has the unit sat? I doubt the problem is the rotor, but it is possible. Disconnect the brush wires, (note where they go for polarity) Put an ohm meter across both rings and read the value, then go from each ring to ground = 0Mohms between rings approx 1ohm or less. Then check the stator output wires the same way. If you have DC voltage on the brush wires then your AVR is working, it is trying to flash the rotor field.

Nov 05, 2013 | Electrical Supplies

1 Answer

High voltage rpm power generator output


Not sure what you mean "high voltage rpm power generator out", however many people have asked how to adjust the engine for proper voltage output. On generators with~out a voltage regulator, I adjust the engine RPM by using a digital voltage meter that has a Hz setting. Adjust the governor untill the meter displays 60 Hz. With the geneator producing 60 cycles, I know that the engine is turning 3600 rpm (the engine produces max hp when it is turning 3600 rpm). At this point, read the voltage output to verify that the range is between 115 ~ 120. On generators with a voltage regulator, verify/adjust that generator is producing 60 cycles then adjust voltage by turning screw at the regulator (some regulators are sealed with potting compound and can not be adjusted). If your power demands are not that great and you appliance can operate at 50 cycles, adjust governor as needed. Lowering to 50 cycles will also reduce output voltage. Good luck

Oct 10, 2011 | Coleman Powermate Powermate 5000W...

1 Answer

GENERATOR WILL RUN BUT DON'T PRODUCE ELECTRIC


Hi and welcome to FixYa, I am Kelly.

Without a model number... I am guessing about what type / brand and MODEL of generator you have. I have to assume it is a Coleman Power mate.

Try flashing the field. Do this.. take and electric drill and plug into the outlets of the generator. Turn on the output power GENERATOR ON. Squeeze the drill trigger and rotate the chuck as fast as you can. This will induce voltage into the stator and they usually will start producing power. When it does produce power it will try to yank the drill chuck head out of your hand so keep that in mind.

If the above does not work...
Remove the small cover from the center of the endbell. It covers the end of the rotor shaft and has 2 brushes under the cover.
INSPECT the brushes visually (do not remove them yet)
(Generator OFF!)
Use a meter to read resistance by probing the electrical contacts of the brushes. You MUST read LOW resistance. This is the rotor winding.
No resistance or high resistance
Remove the brushes inspect for damage. Try to probe the slip rings of the rotor. (You might have to make a 14/2 Romex electiral wire extension to get some solid copper wires to touch the rotor slip rings) Again you must read LOW reistance.

If you have low resistance and the brushes are good.....
Reinstall the brushes. (TEST for AC) Start generator
STILL NO OUTPUT?!!!!
Use a meter on DC to read AVR voltage output to the brushes by probing the brush terminals. You should read 3 - 7 VDC. No voltage.... hmmmm Possibly an AVR problem but...

Try this.
Rig up a 9 Volt battery that you TAPE the wires to the battery terminals and the case of the battery
Just loosely connect the 2 wires to the brushes. Wrap the battery with a rag it might explode if you don't remove it fast enough. Your going to yank this off as soon as it produces power QUICKLY.

Plug in a light or a small fan so you can see that power is being produced. Let it run a few minutes before shutting it down.

To do anything else I need to know your generator model number to do winding and voltage regulator checks.

Thanks for choosing FixYa,
Kelly

Aug 30, 2011 | Coleman Electrical Supplies

1 Answer

Generac generator on auto runs weekly. light green previuosly green. now red. what causes this??


Hi and welcome to FixYa I am Kelly. Your red LED is telling you that it was 1. overloaded. 2. has low voltage 3. overheated or 4. short in the powered circuit.

OVERLOAD LED (red): Lights up if the generator experiences
a load greater than the rated output, low voltage, overheats or
the powered circuit experiences a short. The output is stopped
even though the engine keeps running.

I do not know which of the 4 conditions caused your red light. If you have the read light with no load I would suspect low voltage from the generator / inverter. If it overheated you will also get the Red LED with no load.

Thanks for choosing FixYa.

Kelly

Aug 30, 2010 | Kitchen Ranges

1 Answer

Have older powermate 5000 contractor gen. runs great but only puts out 5.5 to6.1 volts. has new brushes


Hello. Plug something into your generator's receptacle, say a trouble light. Then check the output. With no load at all [nothing plugged in, you will get a voltage reading that is low. regards, Joe

Jan 28, 2010 | Coleman Powermate Powermate 5000W...

3 Answers

Low voltage


Most generators use a flyball type governor within the engine to control rpm; also there is a voltage regulator that tries to maintain voltage at about 115v. The voltage regulator varies the voltage to the armature increasing /adjusting magnetic force. Use a meter with htz or freq setting to adjust engine governor to 60 cycles. When the generator is producing 60 cycles, the engine should be turning 3600 rpm, max power range. At 3600 rpm the voltage should be 115 to 120 volts. Loading the generator will cause governor to try to maintain 3600 rpm. Check engine manual for proper adjustment of gonvernor and linkage. The governor mech should last the life of the engine, however governor system does wear out. Expensive repair. enjoy

Nov 26, 2008 | Yamaha Electrical Supplies

Not finding what you are looking for?
Electrical Supplies Logo

Related Topics:

179 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Electrical Supplies Experts

Sheldon Dedek

Level 3 Expert

912 Answers

Robert Wooley
Robert Wooley

Level 2 Expert

178 Answers

Dan Horsefield
Dan Horsefield

Level 2 Expert

287 Answers

Are you a Yamaha Electrical Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...