Tony,
The 170 may be because the motor is providing the voltage, along the lines of an RPC idler motor. I suspect that his static converter is only connecting the third phase during startup.
Brandon,
You can check for an open winding with your Ohmmeter. With the motor leads disconnected you should see about the same resistance between any two of the three wires going to the motor itself. While you're at it, check to make sure you have infinite resistance between any of the 3 wires and the motor's case.
You can also swap T3 with T1 or T2, start her up and check the current again. The motor will probably run backwards, but it will tell you if the third set of windings are OK. (T1, T2 and T3 are the designations for the three phases on the load side of the contactor.)
Cal