Eaton N39M28T75EE Transformer - K-Factor Nonlinear
Part Number: N39M28T75EE
Quick Summary
The Eaton N39M28T75EE transformer is a 75 kVA, 3-phase unit that provides reliable power conversion from 400 V primary to 208Y/120 V secondary for industrial systems. Engineers often face voltage instability and harmonic distortion as nonlinear loads fluctuate, risking equipment wear and downtime. Certification considerations typically include CE safety approvals and region-specific compliance, with IP-rated enclosures available in suitable configurations to meet environmental requirements. This transformer combines precise voltage regulation with robust cooling and installation flexibility, delivering improved power quality and reduced maintenance costs for OEMs and panel builders in challenging industrial environments.
Product Information
Extended Description
N39M28T75EE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 400V, Taps: 2 at +2.5% /4 at -2.5%, SV 208Y/120V, 150°C rise w/ 200°C insulation systeam, 75 kVA, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N39M28T75EE
UPC
786680135385
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
0.001 lb
Certifications
Contact Manufacturer
Volt ampere rating
75 kVA
Primary voltage
400 V
Secondary Voltage
208 Y/120 V
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N39M28T75EE
The N39M28T75EE employs a K-Factor nonlinear ventilated design that mitigates harmonic distortion, protecting sensitive equipment and improving overall power quality. This directly reduces nuisance tripping and overheating, enabling more stable operation of drives, controls, and lighting in demanding production lines. In practice, manufacturers see fewer voltage sags during load steps, lowering energy waste and extending component life in motor control centers and switchgear assemblies. With a 75 kVA rating and a 400 V to 208Y/120 V configuration, it simplifies panel design and reduces the need for multiple auxiliary transformers, delivering cost and space savings for industrial facilities. The taps at +2.5% and -2.5% provide flexible voltage regulation, helping maintain downstream equipment within tolerance as feeder voltages shift. KT-13 ventilated cooling supports higher ambient operation and continuous duty in compact electrical rooms, improving reliability and thermal margin. The 150°C rise with a 200°C insulation system offers a robust thermal profile for rugged environments and longer service life, while the compact form factor and standard connection arrangements streamline installation and future expansions. Overall, this transformer delivers a dependable balance of performance, efficiency, and ease of integration for modern power distribution schemes in manufacturing, process industries, and facilities with nonlinear loads.
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FAQs
Plan for adequate ventilation and access for maintenance, ensure proper enclosure rating, and provide suitable clearance for cable entries. The unit is designed for panel mounting in standard electrical rooms, with compatible bus and conduit connections to simplify wiring and commissioning.
The transformer uses a K-Factor nonlinear design to mitigate harmonics, reducing overheating and voltage distortion. This improves power quality for drives and controls, lowers the risk of equipment wear, and supports more stable operation in nonlinear-load environments.
Yes. With a 75 kVA rating and a 400 V to 208Y/120 V secondary, it supports common motor control and drive systems in manufacturing facilities. The tapping capability and robust cooling further enhance suitability for continuous operation with nonlinear loading.
Certification details are provided by the manufacturer and can vary by region. The product page notes 'Contact Manufacturer' for official certificates. In practice, CE safety approvals and region-specific compliance are typical considerations for installation planning.
Regular thermal monitoring and infrared checks help verify cooling efficiency. Ensure voltage taps remain within tolerance, keep ventilation paths clear, and perform periodic insulation checks. Following these practices minimizes downtime and extends service life in high-demand industrial environments.