[TheForge] three phase converters, etc.

[theforge@mailman.qth.net]

I set up my three phase system over 15 years ago in my woodworking shop.  I 
use a 10 hp motor for the converter, starting it with a 1/4 hp motor on a 
hinged setup.  I start the small motor, then engage the big motor with a v-belt 
drive.  Usually I let it spin for about a minute to warm up the bearings, then 
power up the converter motor, and turn off the small motor and disengage the 
belt.  I have run a 20 inch surfacer, with a 7 1/2 main motor and a 1 hp drive 
roller motor.  I have about 10 three phase machines in the shop.  I have never 
had the need to run more than one at a time, but I am sure I can.  No harm has 
come to any of the machines after a decade of running this way.  I have never 
tested the voltage.  All I care is that they turn on and run.  I run the three 
phase current through an old three phase panel, acting as a distribution 
network.

Josh Kavett
Fisher & Norris Factory Museum


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