Automatic testing and bonding of windings, on a rotary table, for large production volumes.
The functions, tests and features are identical to those of the I12/NCP but with parallel processes on numerous stations (4 or 6) of a rotary table. This enables the times to be cut down to about 20” (3 pieces per minute). Possibility to apply special equipment to maintain the forming of the heads (after bonding it is impossible to correct them).

Bonding of windings by JOULE effect, in direct current. The following are set: wire diameter, ohmic resistance of the winding, temperature to be reached, current density and the machine automatically calculates the voltage to be applied and the related time required. The process stops upon reaching the temperature (± 2° C), calculating the increase in temperature moment by moment and measuring the ohmic resistance variations. Possible viewing of the heating curve.

Work cycle: complete testing of the stator (see H5/NCP); if it is positive, bonding is possible, therefore the dielectric strength and SURGE are tested again to check whether any problems have arisen.

Stopping of the bonding operation in the event of abnormal heating curves due to the effect of any breaks in the wire or short circuits between coils.




  • Automatic systems (also robotic) for loading and unloading the pieces
  • Laser marking for the good pieces also possible
  • Possibility of automatic connection of the conductors (where provided) with color recognition, using a robot.

Related tests

Bonding of the windings

The bonding of the windings relies on the use of enameled wires coated with an additional layer of thermosetting paint.

Electrical resistance test

Testing the electrical resistance of a winding is essential and is performed to measure the resistance of a winding.

DC Dielectric Strength Test

The DC dielectric strength test is carried out when there are very significant capacitive currents.

SURGE test

The SURGE test is the most reliable method to test the insulation of winding systems and can also be used to test partial discharges.

Rotation Test

The rotation test is specific to electric motors, including fully assembled motors and stator.

Related machines

Our other creations. See the datasheet for more information.


Partial discharge detector for laboratory on Surge and dielectric strength.
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Test on stators with standard 8 terminals expandable up to 16, in groups of 4.


Test on specific stators by sector ELECTRIC VEHICLES – EV.

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