Delta is rolling out a “grid-to-chip” architecture that ties together power, liquid cooling, and facility controls for AI data centers, with hardware spanning UPS systems, lithium-ion battery cabinets, a 3 MW coolant distribution unit (CDU), and an 800 VDC rack power approach. The pitch is straightforward: as AI racks push power density and heat flux up, operators need fewer one-off subsystems and more coordinated design across electrical, thermal, and controls.
On the power side, Delta’s Ultron DPM Gen-2 series UPS is a three-phase platform rated from 250–2500 kVA, with 415 V and 480 V configurations. Delta lists up to 97.5% efficiency in double-conversion mode using SiC technology. The UPS architecture scales up to 20 MW with N+1 redundancy.
For energy storage, Delta’s UZR3 Li-ion Battery Cabinet is positioned as a data center battery cabinet platform with a global footprint exceeding 3 GW. It is UL 1973 certified and has passed UL 9540A testing with “zero fire propagation.” Delta also states the cabinet achieves UL 9540 certification when integrated with the DPM Gen-2 UPS. Delta also introduced the UZR3-S series, aimed at meeting NFPA 855 Large-Scale Fire Testing (LSFT) requirements, with changes described as enhanced fire mitigation, optimized thermal management, and advanced system-level protection.
For liquid cooling distribution, Delta highlighted a 3 MW liquid-to-liquid CDU rated for up to 3000 kW and up to 3000 LPM of flow. Design details include dual power input and hot-swappable filtration. For integration into monitoring and controls stacks, Delta lists support for SNMP, Modbus TCP/IP, and BACnet.
Delta also described an 800 VDC power architecture designed for “AI factory” environments. The company’s rack-level approach integrates high-density DC power shelves and distribution inside the rack, and it lists up to 1.1 MW per rack at up to 98% efficiency. Delta also calls out high-efficiency DC/DC conversion, integrated eFuse protection, and a high-power busbar design.
Controls and building automation are anchored by enteliWEB, a building management system intended to provide a single interface across HVAC, electrical power systems, security, and lighting, with analytics and dashboards. Delta also described Red5 controllers that manage thermal and electrical systems across white space and supporting infrastructure, with development environment support including Python and Node-RED, plus O3 AI-enhanced multi-sensors that monitor temperature, humidity, light, and sound.
One practical takeaway for data center engineers: the specs Delta is putting forward—20 MW UPS scaling, a 3 MW CDU, and a claimed 1.1 MW per-rack 800 VDC design—are explicitly targeting high-density deployments where integration work and failure-domain boundaries can become as hard as the electrical and thermal design itself.
Source: Delta Electronics (Americas)
