This article explains how to scientifically select the right DC power system based on four dimensions: needs analysis – core parameters – scenario adaptation – common mistakes. Pre-selection Step: Clarify Three Core Requirements. Outdoor cabinets house sensitive equipment that requires stable and continuous power supply, making it essential to choose the right DC power system that meets the specific voltage and current demands. The 48V DC power system provides consistent energy delivery and supports seamless battery backup, which ensures your network stays online during outages. Using -48V in telecom helps prevent corrosion inside. . © 2026 Delta Electronics, Inc. The ORC houses DC power, batteries and equipment. Marine grade aluminium construction and fully sealed technology guarantee a long maintenance-f ee life for the cabinet and complete protection for equipment inside. As a Diamond Value-Added Distributer of Vertiv NetSure (Previously Emerson Network Power) and Eltek/Valere, Alpine has the experience and. .