Eaton V48M28T75ZZ Open-core Ventilated Transformer - UL

Open-core ventilated design enables superior cooling and easier field inspection, translating to longer service intervals and reduced downtime. The V48M28T75ZZ uses aluminum windings in a DT-3 open-type assembly housed in a 914AC frame, delivering rugged performance in harsh industrial environments. This layout also supports straightforward ventilation and mitigates hot-spot formation, which is critical for continuous operation in automation panels and substation feeders. The 75 kVA rating with a 480 V primary and 208Y/120 V secondary provides scalable power for control panels, machine feeders, and plant substations, supporting current harmonics and loading scenarios while maintaining regulatory compliance. Voltage regulation is enabled by taps: 2 at +2.5% FCAN and 4 at -2.5% FCBN, allowing on-site adjustment without swapping windings, reducing commissioning time and stabilizing downstream voltages for drives and PLCs. High-temperature tolerance is specified with a 150°C rise, enabling operation in elevated ambient conditions common in dense equipment rooms, and, combined with a dry-type construction, minimizes fire risk and simplifies maintenance. Open-core assembly and aluminum windings offer a balance of low cost and robust performance, while a heavy-duty 489 lb frame reinforces mechanical stability during equipment moves or seismic events. UL Recognized certification supports procurement and compliance workflows, and the open-type configuration eases retrofit with existing Eaton or compatible power distribution equipment. In practice, this transformer pairs well with standard mounting footprints and Eaton's distribution catalog, enabling rapid integration into new or upgraded industrial power networks.