- Joined
- Feb 2, 2013
- Messages
- 3,627
Joe,Are you running it off of the static phase controller and trying to determine what the horsepower of the motor is? If so, I don't think that is something you can measure correctly that way.
If you absolutely can't live without knowing the horsepower then maybe put an ad on CL asking for someone with a rotary phase controller (which theoretically provides 100% 3-phase power) or a shop with real 3-phase power and see what they'd charge for 10 minutes of their time for you to take the motor to them to power it up at 100% and then measure the amps drawn the way explained above.
If you're going to keep fiddling around with it in your shop though, are you measuring like this:
power panel wired somehow (directly or through plug) to the static phase controller.
static phase controller has three wires coming out to those three paired wires on the motor.
two of the wires go directly to the motor.
one of the wires gets connected to one of the wires on your multimeter and the other wire on the multimeter goes to the motor.
And of course to make sure you don't burn out, blow up or destroy your meter/self/shop: there should be a setting on your multimeter to measure amps instead of voltage. You gotta set it to the amps, and you have to choose a max amperage higher than you can expect to hit with that motor.
Good luck.
Be Safe.
Joe
you have some excellent points, thanks for the input.
i have one disagreement, you can accurately determine the working hp of the motor provided you are able to get an amp reading and a voltage reading. if it runs, you can measure volts multiply them by amps and divide by 746, you get hp.
make sense?
mike)