As AI workloads push rack densities higher, data centers are rapidly adopting higher-voltage DC power architectures to improve efficiency and support next-generation infrastructure. However, this shift also introduces new challenges around grounding, protection, safety, and regulatory compliance.
The Open Compute Project (OCP) Sidecar architecture is helping redefine power distribution through 800V DC and ±400V DC topologies. Understanding the tradeoffs between these approaches is essential for designing resilient, scalable power systems that maximize uptime while protecting critical infrastructure.
This ABB whitepaper explores grounding strategies, compares DC distribution topologies, outlines key UL and NEC requirements, and provides practical guidance for implementing safe, future-ready power protection for AI-driven data centers.
