What is typically the key advantage of using a capacitive coupled voltage transformer over traditional types?

The key advantage of using a capacitively coupled voltage transformer is the ability to achieve higher voltage capability without increasing the overall size of the device. This is primarily due to the nature of capacitive coupling, where the transformer can step up the voltage effectively while maintaining a compact design. This characteristic makes it especially useful in applications where space is limited or where lightweight equipment is necessary, such as in power systems and high-voltage applications.

Traditional transformers tend to require larger core sizes to handle similar voltage levels, which can lead to increased weight and bulk. The efficient design of capacitive coupled transformers allows for a significant increase in voltage levels without a corresponding increase in size, which is not feasible with many conventional transformers.