ELSCO Transformers provides 750 kVA medium voltage dry type transformers backed by a five-year warranty for new indoor models and a three-year warranty for remanufactured options. We carry in-stock systems ready to leave our facility within 24 to 48 hours, depending on what modifications need to be made. With 95% unit availability and a dedicated Quick Response Team, we are prepared for planned retrofitted or custom upgrades or emergency replacements.
Zero-Failure Engineering Since 1988
ELSCO Transformers has designed and manufactured its own dry type units since 1988, with no material, design or workmanship failures recorded. We hand-build our 750 kVA 3-phase transformers locally, while meeting and exceeding industry standards from ANSI, DOE, NEMA and IEEE. Each device passes through five testing checkpoints to verify uniform winding tension, cooling clearances and other quality and performance requirements.
While we don’t offer installation services, we can retrofit your transformer with plug-and-play installation capabilities. This design promotes an easier installation, which can save you time and money. If you require custom bus work, our team can fabricate bus bars for your transformer. We can also provide installation support over the phone to streamline the process.
Our systems offer:
- Sustained efficiency under continuous load: Our round coil primary and sheet-wound copper secondary windings deliver performance on par with liquid-filled designs. The step-lap mitered core minimizes no-load losses, a compounding efficiency advantage that becomes increasingly significant under the sustained high-demand cycles typical of 750 kVA installations.
- 100% copper windings: This material resists degradation under sustained high loads, extending service intervals and reducing long-term replacement frequency.
- DuPont Nomex and SG200 fiberglass insulation: We select these materials for 750 kVA operating environments, where thermal buildup and fault-current events pose the greatest risk to insulation integrity. These materials absorb stress and minimize the combustible coolant risk inherent to liquid-filled alternatives.
- Anti-vibration pads: These components minimize operational vibration and acoustic output, supporting quiet performance in noise-sensitive facilities.
750 kVA Transformer Specifications
Key specifications include:
- Rating: 750 kVA
- Configuration: Three-phase, four-wire wye secondary
- Primary voltages: 4,160, 12,470, 13,200 and 13,800 V delta
- Secondary voltages: 480Y/277 and 208Y/120
- Enclosures: NEMA 1 and NEMA 2 for indoor solutions or NEMA 3R for outdoor systems
- Dimensions: Varies by enclosure type and voltage class
Meeting the Power Demands of Larger-Scale Operations
A 750 kVA dry type transformer sustains concurrent, high-load systems for various industries, including:
- Full-scale manufacturing facilities: Our solutions power complete production floors with multiple automated systems operating simultaneously, providing headroom for varying load cycles.
- Community hospitals and acute care facilities: We provide systems for inpatient, surgical and emergency operations where critical systems draw concurrent power loads and require regulated voltage.
- Multibuilding campus and institutional complexes: Distribute electrical loads across connected academic, administrative and residential structures that exceed single-building demand.
- Municipal and government infrastructure: Your 750 kVA transformer can deliver power to water treatment facilities, civic centers and government complexes with 24/7 operational requirements.
- Large commercial and industrial developments: We support industrial parks, shopping centers and high-density mixed-use properties requiring step-down capacity above the 500 kVA range.
Equip Your Facility With U.S.-Made Quality
ELSCO Transformers has been in business for over a century, allowing us to provide an expertise advantage. We understand transformers and can recommend the right solution and NEMA rating for your application. Call 800-232-9002 today, or submit a quote request.

