A New Method for Current Transformer Loading

The concept of using separate load and output windings on small current transformers offers properties which may be useful in many applications. The principle feature of this method is that the resistance of the load winding itself serves as the entire load for the device. Several means of achieving such a configuration are suggested, including the use of bifilar windings and single-turn load windings made with bare wire or conductive coatings placed directly on the core. Desirable features of this method include economy of size and shape, and performance suitable for many applications. Limitations of performance exist for higher frequency conditions, but a considerable range of use is still available to the user.