General Signal DT651H75 SER.D Hevi-Duty 3-Phase Transformer 75kVA

Industrial-grade dry-type transformer designed for SCR (Silicon Controlled Rectifier) drive systems. Built for reliable power conversion and electrical isolation in demanding industrial environments, this transformer provides stable performance for motor drives, rectifiers, and control applications. Technical Specifications Manufacturer: General Signal (Hevi-Duty Electric Division) Model: DT651H75 SER.D Type: SCR Drive Transformer (Dry-Type) Phase: 3-phase Power rating: 75 kVA Primary voltage: 460 V (Delta connection), 94 amps Secondary voltage: 460Y / 266 V, 94 amps (Wye connection with neutral) Frequency: 60 Hz Insulation class: H (170 °C temperature rating) Temperature rise: 115 °C or 150 °C (as indicated per model configuration) Cooling method: Air-cooled (self-ventilated, dry-type) Enclosure type: Ventilated steel enclosure (NEMA 2 or equivalent indoor type) Weight: Approximately 600–700 lbs (per nameplate configuration) Winding material: Copper or aluminum (varies with production model) Impedance: Typically 4–6% Sound level: Meets NEMA ST-20 standards for industrial transformers Mounting: Floor-mounted base with vibration isolation pads Connections: Screw lug or compression terminals accessible behind removable front panel Wiring configuration: H1–H3 primary, X1–X4 secondary as per wiring diagram on nameplate Applications – Variable speed motor drive systems (AC/DC drives) – Rectifier input isolation – Machine tool control circuits – Industrial automation and power conditioning – Power conversion for process control systems Features – Designed for high harmonic environments (SCR drive duty) – Enhanced insulation system for long service life under heavy load – High efficiency and low noise operation – Rugged construction for industrial settings – Thermal protection and accessible grounding provisions Compliance Standards: UL Listed, CSA Certified, NEMA ST-20, ANSI C57.12 Cooling class: AA (air natural) Country of manufacture: USA Please review pictures carefully and let us know if you have any questions!