What is the primary feature of wire wound voltage transformers?

The primary feature of wire wound voltage transformers is that they consist of a primary and secondary winding that are wrapped around a magnetic core. This design allows the transformer to operate efficiently by enabling the transfer of electrical energy between the windings through magnetic induction. The wire wound configuration helps in maintaining a specific turns ratio, which is crucial for stepping voltage up or down as required in various applications.

The magnetic core enhances the magnetic field produced, making the transformation of voltage more effective and allowing for better accuracy in measurement and voltage regulation. This feature is essential for applications such as metering and protection in electrical systems, where precise voltage readings are necessary.

The other options describe aspects that are not characteristic of wire wound voltage transformers. For example, the use of a capacitive voltage divider does not involve the inductive principles that wire wound transformers utilize. Similarly, while some types of transformers may be limited to specific applications like substations, wire wound voltage transformers are versatile and used in various contexts. The statement about not utilizing a magnetic core contradicts the fundamental operation of inductive transformers, which rely on a magnetic core for functionality.