The direction of rotation tester RDT-308 applies a 3-phase or single-phase current to a stator coil and measures the direction of rotation, distribution and variation of the magnetic flux generated by the current using a detector (detection sensor) installed in the stator coil.
The system supports stator coils with up to 16 poles, and can also test 12 / 8 / 6 / 4 / 2 poles when a 16-pole detector is used. A full range of functions such as automatic pole number detection, automatic gain and overcurrent protection are also available.