The two basic types of current transformers are the doughnut and the ____.

The two basic types of current transformers are the doughnut and the ____.

The two basic types of current transformers are the doughnut (or toroidal) and the bar-type.

1. Doughnut (Toroidal) Current Transformer: This type has a circular core with a hole in the middle, resembling a doughnut. The primary conductor is passed through this hole, and the transformer measures the current passing through it.
2. Bar-Type Current Transformer: This type has a straight bar as the primary conductor. The primary conductor is typically integral to the transformer, meaning the transformer is installed in line with the conductor itself.

These two types cater to different installation requirements and configurations in electrical systems.