What type of power does the Rectifier Shelf provide?

The Rectifier Shelf provides -48 VDC, which is critical for powering telecommunications equipment, particularly in systems that utilize digital or voice switching technologies. Several telecom systems, including those used in central offices and data centers, require negative voltage for their operation.

The use of -48 VDC helps to ensure compatibility with the equipment and offers advantages such as reduced corrosion in copper conductors and less electromagnetic interference. This makes it a preferred voltage standard for many operators.

In contrast, the other options listed, such as 12 VDC and 24 VDC, are generally used for lower power devices or in different contexts and are not suitable for the type of robust equipment connected to a Rectifier Shelf. Meanwhile, 48 VAC refers to alternating current, which is not the type of power output typically associated with a Rectifier Shelf that converts AC to DC for use in such systems.