Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
MMD > Archives > March 2013 > 2013.03.22 > 01Prev  Next


Seeburg L Motor Power
By Bill McKeown

Giorgio,  Robbie's advice is 100% correct for running a motor on 220
volt 50 Hz power.  Both the speed and the motor inductive reactance
are 5/6 of the values at 60 Hz.  For the same mechanical horsepower
(proportional to torque times RPM), the motor will run hotter at 50 Hz.

Fundamentally, the motor cannot produce its rated horsepower when
run on 50 Hz power.  The motor can produce the same torque (without
overheating) at 93 volts, but at a lower RPM.  Putting on the bigger
pulley will take care of that factor, but will increase the torque that
the motor must produce (by the pulley ratio).  Nevertheless, because
the motor most likely has some mechanical power margin, it will
probably not heat up too much.  This has been the case, according to
one reader's posting.

When I lived in Italy, I used a transformer to operate a USA-made
60 Hz refrigerator on the 220v 50 Hz mains power.  The compressor motor
would overheat and shut itself off at 110 volts, but it ran fine at 95
volts.  (I removed some of the 110 volt secondary winding to reduce the
output voltage).

Bill McKeown


(Message sent Fri 22 Mar 2013, 06:55:07 GMT, from time zone GMT-0700.)

Key Words in Subject:  L, Motor, Power, Seeburg

Home    Archives    Calendar    Gallery    Store    Links    Info   


Enter text below to search the MMD Website with Google



CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2024 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Please Support Publication of the MMD with your Generous Donation

Pay via PayPal

No PayPal account required

                                     
Translate This Page