Motor testing advice.
Motor testing advice.
(OP)
Hello people,
I need to analyse a bunch of AC induction motors from 0.25kw - 2kW.
Does anybody know if there is an off-the-shelf Generator device I can hook up to create a load and get some data under different loads?
I guess I'm after a brake/generator device of some kind.
I've already set up test rigs to do reliability testing using Labjack gear.
Any advice greatly appreciated. I usually sub contract this work out but it's getting more and more difficult finding somewhere that's interested.
cheers
CB
I need to analyse a bunch of AC induction motors from 0.25kw - 2kW.
Does anybody know if there is an off-the-shelf Generator device I can hook up to create a load and get some data under different loads?
I guess I'm after a brake/generator device of some kind.
I've already set up test rigs to do reliability testing using Labjack gear.
Any advice greatly appreciated. I usually sub contract this work out but it's getting more and more difficult finding somewhere that's interested.
cheers
CB





RE: Motor testing advice.
If you're interested in Jobbing out your motor testing we are interested and available for you. We're located in Seatle,Wa.
RE: Motor testing advice.
But I doubt that LabJack is fast enough for that measurement.
Next thing to do is to get an old DC motor and a thyristor drive. Hook it up for braking and breake away. In such an arrangement, the LabJack can do the job.
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: Motor testing advice.
I'm in the UK, I should have said that, sorry.
re: the DC motor and a thyristor drive - I'm going to need to create a known load so I can chart torque speed curves and record things like starting torque.
Would this be easy to set up?
cheers
CB
RE: Motor testing advice.
For best accuracy, you need a torque transducer.
The beauty with the DC drive is that you can set current limit to get constant torque. And it doesn't run hot - most of the energy is sent back to the grid.
For comparative measurements, a DC motor is perfect. Even without calibration or torque transducer. But you need to run the excitation with constant current.
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...