Transformer humming
Transformer humming
(OP)
50kva transformer supplying battery charger system start making a loud humming sound with load and. With noloaf ,transformer insulation resistance is high,but when using scope meter,output currents was distorting any help
Wave form
http://files.engineering.com/getfile.aspx?folder=d...
Wave form
http://files.engineering.com/getfile.aspx?folder=d...






RE: Transformer humming
The wave form you sent doesn't show lower harmonics (3,5,7).
RE: Transformer humming
the picture i attached is for out put current when charger was connected.battery charger is 40kva used as UPC
RE: Transformer humming
"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington