Which winding on a constant current transformer is moveable?

The secondary winding of a constant current transformer is moveable to allow for adjustments in the output voltage while maintaining a constant current. This design is crucial in applications where specific current levels are needed regardless of changes in load or voltage. The ability to move the secondary winding can help optimize performance under varying conditions.

In contrast, the primary winding is typically fixed as it is directly connected to the input power source. The fixed nature of the primary winding ensures that the transformer operates within its designed parameters for input current and voltage. Therefore, the moveable aspect of the secondary winding allows for flexibility and control in output, which is a significant characteristic of constant current transformers.