• PC controlled test system
• tandem design
• test range:
  - high voltage test 
  - impulse winding test
  - rotation direction recognition
  - resistance measurement

For this test system a tandem test cage is applied. This means that while the tests are run in one of the chambers, the next DUT is inserted into and connected to the other chamber. This testing method not only allows the testing of quite a few more stators but, in addition, helps you to save time for, while the first test is run, your next DUT can be made ready for the testing.

At the beginning the continuity of the single phases is tested. Then by means of the high voltage test it is determined if there is a short circuit between the phases and the laminated core of the stator. With an ohmmeter in 4-wire technique the exact ohmic value of each winding can now be determined.

The most important of all the tests, however, is the surge test. With a short high voltage pulse of up to 6000 VDC in each coil of the DUT the insulation resistance of the coil is tested and established. Not only are already existing interturn short circuits recognized but of special interest is that any weakness in insulation, as e.g. caused by faulty varnished wire or a damaged winding, is recognized. This test method is physically not replaceable by any other measurement procedure and it guarantees the quality of all kinds of windings in all of your products. At the end the direction of rotation is recognized. This is performed via a probe which, aided by a Hall generator, recognizes the eventual direction of rotation of the rotor.

• continuity test 24 V DC
• high voltage test up to 5 kV
• resistance measurement in 4-wire technique
• surge test up to 6 kV DC
• rotating direction recognition