What voltage range is common for underground distribution?

The common voltage range for underground distribution typically falls between 2.4 kV and 35 kV. This range is utilized because it effectively meets the needs of medium-voltage distribution systems, striking a balance between safety, efficiency, and the distance electricity needs to travel underground.

Underground distribution systems are designed to minimize the risk of outages due to environmental factors and to reduce visual impact. The 2.4 kV to 35 kV range is ideal for providing reliable power to various customer loads among urban and rural settings, making it the standard for this application.

In contrast, other ranges presented do not encompass the most common specifications for underground distribution. While the range of 0.5 kV to 10 kV may apply to certain localized distribution instances, it's less representative of the broader underground distribution systems. Similarly, the ranges of 1 kV to 15 kV and 3 kV to 50 kV extend beyond the typical medium-voltage category, which reinforces why the 2.4 kV to 35 kV range is recognized as the standard in this context.