Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations 3DDave on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Small (portable) generator problem

Status
Not open for further replies.

Torque454

Computer
Apr 29, 2009
1
Dont really know where else to get help so I will post here. Ive got someone local willing to help me with this but we are both pretty busy all the time and getting us both available at the same time is difficult.

I am working with a 6.0 KVa (sold to me as 6,000 watt, but according to the conversion formula I found, 6.0kva translates to 4800 watt. However it says on the side of the generator that it is 50.0 Amp @ 115v and 25.0 amp @ 230v which is 5750 watts.) Anyways I digress. I purchased just the generator head, without engine. I attached an 11hp engine I had to it directly driven (2 pole generator, requires 3600rpm for 60hz). When I started it up, its output voltage was 5.2 volts. Ive tried "flashing" it with a 12v battery for a couple seconds with no success (voltage climbed to about 20ish volts with the battery connect but immediately dropped back off the 5.2 when the battery was removed. It has sat about 2 years since it was last used. I dont know if the capacitor is bad or if it is something else? (its a brushless capacitor excited Markon BL105E [RVG 2 bearing type] generator) The person i bought it from swore up and down that it worked and he would take it back if it didnt, but by the time i got the frame built and the couplers ordered and picked up i had lost his contact information.

Does anyone have any idea what might be wrong? My first thought is the capacitor but if it was the capacitor wouldnt it produce zero volts? I tried plugging in a 300 watt work light thinking maybe it needed to have a load on it to start making power but that didnt work. I have also been told that a diode could be bad. But here again if that was the case I would think it wouldnt give any reading at all.
 
Replies continue below

Recommended for you

Buy a new capacitor, take an aspirin, and call us in the morning.
BTW, 120 has been the standard voltage in much of North America for decades. 50 A x 120 V = 6000 W


Bill
--------------------
"Why not the best?"
Jimmy Carter
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor