try http://www.analog.com and search for ADE7752
You can put that chip with a PIC and a "few" other components and make your
own meter.

They do have a completed reference design that you may research over there
and see if its available for purchase.  Its referred to as the SST-SALEM-3T

Scott

At 05:18 AM 2/15/04, you wrote:
>Guys,
>
>I've got to measure the input power to an industrial 3 phase, 460V, 25hp
>electric motor.  I'm running a test using the motor as a driver and trying
>to get an idea for efficiency of the mechanism I'm driving with the
>motor.  I'll be running at basically the exact same speeds/loads for all
>conditions.
>
>Anyone know of some type of meter that measures input current, voltage,
>(and power) for this type of setup for relatively cheap (less than a couple
>$k).  Ideally it would be able to output these values (RS232 or similar)
>for data acquisition purposes over a test that'll run ~2 weeks continuous.
>
>Thanks,
>
>Gary
>
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