Question about Generac Guardian 100 Amp Transfer Switch with Service Disconnect NEMA 3R

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DOES ANYONE KNOW ALLGENERATOR WINDING RESISTANCES ?

DOES ANYONE KNOW WHAT EACH GENERATOR WINDING DC RESISTANCE SHOULD BE ON A GUARDIAN 15KW PORTABLE GENERATOR SHOULD BE ? BMAR

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5 Ohms at the rotor.
Disconnect all the stator wires and measure each one to ground, it should read opened.
Before disconnecting wires, mark which are hot and which are neutral. Measure between the hot neutral wires and some should read at least 0.5 ohms. You should have T1 and T2 reading 0.5 and T3 and T4 reading 0.5. T1 and T3 should read opened, T1 to T4 should read opened. Also, T2 to T3 should be opened and T2 to T4 opened.

Posted on May 07, 2009

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Posted on Jan 02, 2017

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How to test portable generator stator for short in windings


You will need what the factory resistances valuea re supposed to be, cold. Then use a high quality ohm meter with 3 decimal places, disconenct all wires off the stator. Check each wire with a meter to the ground frame, if there is any value, stator is shorted. Then check between stator wires ie L1 L2 and compare resistance value with factory values.

Oct 02, 2014 | Briggs & Stratton Electrical Supplies

1 Answer

Starts runs for a minutes quits but if you keep pushing the start button it keeps running


Check rotor slip rings for cleanliness, brushes, stator resistance, rotor resistance. Then replace control board if they check out.

Feb 15, 2013 | Onan Cummins 4.0 KY-FA/26100 RV QG 4000...

1 Answer

I have a hg 6000 homelite generator, runs great but does not give me any power. i used it a year or so ago an everything worked fine. got a lil smoke from where windings are. the generator was made in...


Hi and welcime to FixYa. I am Kelly

This is going to sound odd but.... this is how it it is recommended to field flash and inverter type generator. (Brushless) The steps are to (not kidding...) use a male mail interconnecting wire from your house wiring and plug in your generator and turn ON the main CB for 1 minute.

If this does not work.... See steps below amnual links.

Owners manual link: (Click on get manual)
http://lawnandgarden.manualsonline.com/manuals/mfg/homelite/hg6000_1.html

Or try this direct link:
http://lawnandgarden.manualsonline.com/support/homelite/portable-generator/request-manual-299128

This is a brushless generator... Not sure what the smoke was but... the yellow wires are for the capacitor winding. If you probe the capacitor terminals with one of the wires disconnected with a meter on R x 10,000 you should see a brief jump in resistance and then the meter drifts to infinity.
reverse the test leads and test again looking for the same result.

Next read resistance Yellow wire to Yellow Wire (Stator capacitor loop check) It should read low resistance

Also read Brown wire to Brown wire. This is the DC stator loop check. Is should read resistance.

Main winding checks Red to Blue and White to Brown that goes to the main breaker. OR Turn the Main breaker on.. White to lower left pin of 30A 4 pin output recepticle. Bot red to blue and White to Brown MUST read low resistance

These are all the checks except the rectifier and the rotor. You will probably find something during the above tests. If not... respond here and I will pass on the rotor and diode tests.

Kelly

Aug 27, 2011 | Electrical Supplies

1 Answer

Stop produceing power after only 20 of running


Hi and wleome to FixYa, I am Kelly.

Pull off the small cover on the OUTSIDE of the end bell that covers the bearing and the brushes. Using a meter on resistance scale of R X 100 or R x 1000 probe the brushes and see if you read any resistance You should see a reading of much less than 1000 ohms that would be the rotor winding resistance. If you do not have resistance then remove the brushes and check the condition and LENGHT of the brushes. The brushes should be no less than 3/8" long. If you can get your test leads into the brush holes probe the slip rings and read the rotor resistance. You must read resistance under 500 Ohms. No resistance or can not reach the slip rings remove the end bell and test rotor resistance again but probing the 2 slip rings.

Most of the time the brushes wear out or break off when a generator just suddenly stops working.

Reinstall the end bell and read for a DC voltage reading of 3 - 9 volts across the brushes after you know the brushes are in good working order. No voltage then the AVR has failed. If you have voltage then the final tests would be continuity checks of the diode and capacitor in the end bell and finally the stator windings. The dilde will ony read resistance in ONE direction. It should NOT read open or shorted in both directions. The capacitor check use R x 10,000 and probe the capacitor terminals. Reverse the leads and probe it again. You should see a brief jump in resistance and the meter will drift to infinity EACH time you reverse the leads.

If you want parts information I need the model number off of the unit data plate to get that information for you.

Thanks for choosing FixYa,
Kelly

Aug 25, 2011 | Coleman Powermate Powermate 5000W...

1 Answer

Guardian 15000 Watt Portable Generator will not charge the 12volt battery. Help


Suggest you go to Amazon.com and do a search for the Generac Guardian. When you find it, look in the product details and you will see Product Manual (PDF) under the Product Details.

http://ec1.images-amazon.com/media/i3d/01/A/man-migrate/MANUAL000031765.pdf

it has a troubleshooting guide located on page 19.

No Battery Charge DC output.



1. Battery posts are corroded. 1. Clean battery posts.

2. Battery cable is bad. 2. Replace cable.

3. Battery is defective. 3. Check battery condition; replace if

defective.

4. Receptacle is bad. 4. Contact Authorized Service Facility.

Hope this helps!

Jun 02, 2011 | Generac Guardian Ultra Source 15,000 Watt...

1 Answer

Coleman powermate generator has no output. have changed diodes, capacitor and brushes. i have 12 volts across the brushes but no output at the receptacles. coleman powermate 0545005 5000w


Disconnect the leads going to the brushes, and check for continuity (resistance) of the field winding. You should be able to measure *something* on the order of a few ohms. If you have resistance, then check each brush contact to the shaft that the field winding is on. There should not be any resistance at all, if there is, you have a shorted field winding and will need to be replaced.

Check the resistance of the stator winding next, make sure that nothing is connected to the generator, disconnect the stator wires if you are able (label them!). Check for resistance between the leads (2 wires for a 2 pole, 4 wires for a 4 pole). If there is no resistance, then the stator is open, and will need to be replaced. Also check for resistance from each wire to the frame of the alternator, there should not be any resistance here (indicating a shorted stator). If there is, then you have a shorted stator, and will need to have it replaced.

Replacement is likely to be impractical, probably cheaper to buy another generator with the same engine and keep the old engine as a spare. Still, contact an automotive starter / alternator shop for prices.

Feb 07, 2011 | Electrical Supplies

1 Answer

My Generac Guardian 15,000 Watt Model 004582 generator is putting out low voltage (about 45V on the 120V side). The trouble lights on the voltage regulator are lit as follows: Regulator light - lit red...


Hi Jake and welcome to FixYa. I am Kelly. Check both CB1 and CB 2 circuit breakers by pushing them to OFF and then back ON. Open the brush block access and then start the unit. You should read voltage at the brushes of 5 - 14 VDC on the terminals of the brushes. If you do not have 5 - 14 VDC at the brushes the probable suspect is the automatic voltage regulator (AVR). If you do have the correct voltages then with the unit OFF.... do a resistance check across the armature coil by reading resistance at the brush block terminals. You should read around 180 Ohms. It can be more or less resistance but for sure less than 500 Ohms. If you do NOT get a resistance reading remove the brush block assy and test the armature directly by reading across BOTH slip rings. You should get the resistance previously stated. If you have resistance then most likely there is a problem with the brushes. (Too short / broken carbon brush / missing spring or a defective terminal.) Without knowing the AVR output voltage and the armature resistance reading at this point it is difficult as to how to advise you to proceed. Let me know the values you obtain for AVR DC voltage at the brushes and actual ARMATURE resistance reading. Make sure you use R x 1000 on the meter. I am having thoughts of maybe a broken wire somewhere inside the control panel also.

Thanks for choosing FixYa,
Kelly

Jan 09, 2011 | Generac Guardian 100 Amp Transfer Switch...

1 Answer

Generac 5500XL, model#09778-7 no output. Changed the power regulator board. No luck. Flashed the 120 plug with 12-30vdc from DC board. Nothing. Excited the brushes directly with DC board. Only got 2.36VDC...


Double check your brush istallation. positive side toward rotor bearing, if you put 12 vdc directly into brush pack and check with a meter at the 120 vac outlet and have low or no voltage, you may have no resistance in your rotor slip rings, excitor & main windings also need a resistance check. 12.6-16.7 ohms (rotor) 2.26-2.80 ohms (excitation) .26-.32/.28-.35 main or power windings. Note: unit running when appling 12 volts to brush pack. 2-5 second only, ( This test tells you the rotor & stotor are ok )

Jan 22, 2010 | Coleman Powermate 5000W Home Backup...

1 Answer

Fuse blows repeatedly


The auto speed control is failed. Keep it manual and see how it does...It will run at full throttle even when no load is running. Then fix the throttle control when able.

Aug 09, 2009 | Generac Guardian Ultra Source 15,000 Watt...

1 Answer

Powermate 5500 no Power on plugs, shorted stator symptoms?


Stator resistances should be around .5 ohms. This may look like a short to you. Unhook the regulator from the field brushes and put 12 volts on the field winding. you should get output to partially light a bulb..maybe 60 volts. Remember to use 12 volts dc on the fields and don't reverse the polarity.
If there is output then the avr(voltage regulator) is probably bad. If there is no voltage then check the resistance on the brush contacts. through the bushes and field. Maybe around 25 ohms. Your generator manual can give the exact ranges. No resistance then clean the brushes and slip rings and check again. No resistance...take reading on the slip rings. No resistance...open field...bad rotor. Good luck....keep posting until problem is resolved.

Jul 01, 2009 | Coleman Powermate Premium Plus 6250W...

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