Field Coil

we are the largest manufacturer and supplier of field coil in Bengaluru, Karnataka, India.
Housed inside the shakers body, field coils are always stationary and produce a constant magnetic field. proprietary design uses two field coils with two copper rings between them. Location of the copper rings falls directly in the front and at the back of the armature coil with minimal space between the rings and the armature for smooth operation. As the field is powered with DC supply and the armature with AC supply, interaction of flux of these coils causes the movement of the armature. The copper rings are used to reduce the effect of induction caused by the AC supply to the armature coil.

The field coil is the primary source of heating inside the shaker as it is powered with a constant DC supply regardless of the test profile. The coils itself are made of copper for every system to reduce conductor losses. In an air cooled system, these coils are cooled by forced air which flows through the air gaps between each winding of both the coils. In a water cooled system, these coils are cooled by water flowing through each winding of both the coils. To ensure proper cooling of the field coils in a water cooled system, both the field coils are built by stacking multiple disks of thin coils. These discs are connected in parallel for cooling and in series for transfer of electricity.