Eaton N48M28T49CULS47 Transformer - UL Listed
Part Number: N48M28T49CULS47
Quick Summary
Eaton N48M28T49CULS47 is a K-Factor nonlinear ventilated transformer used to power large three-phase systems. In facilities with variable loads and sensitive equipment, voltage stability and noise control are ongoing challenges. UL Listed safety certification ensures compliance with rigorous electrical standards, while copper windings and an electrostatic shield improve efficiency and EMI performance. With a 150 kVA rating, 480 V primary, and 208Y/120 V secondary, this unit supports scalable power distribution in manufacturing, data centers, and process facilities. Low sound, compact footprint options, and Weathershield versatility add installation flexibility and long-term value for both indoor and outdoor applications.
Product Information
Extended Description
N48M28T49CULS47 Eaton: K-Factor nonlinear ventilated transformer K-13, Three-phase, PV: 480V, Taps: 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 208Y/120V, 150°C, 150 kVA , Cu windings, Elec. Shield, Frame: 917
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T49CULS47
UPC
786680025488
Product Length/Depth
24.67 in
Product Height
56.17 in
Product Width
31.44 in
Product Weight
1879 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Catalog Notes
Low sound equal to 47 dB
Coil material
Copper
Type
Ventilated transformer
Design
K-13
Frame
917
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
150 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Temperature rise
150 °C rise
Modification 1
Low sound 47 dB
Special features
Electrostatically Shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28T49CULS47
K-Factor nonlinear ventilated design improves performance under harmonic loads, reducing overheating and extending transformer life, which translates to higher system uptime in facilities with numerous VFDs and reactive power devices. This translates to fewer outages and lower maintenance costs for critical production lines and data centers. Voltage regulation with taps delivers consistent secondary voltage despite input fluctuations, minimizing equipment stress and extending motor life in variable-load environments. Copper windings paired with an electrostatic shield reduce losses and EMI, safeguarding nearby sensors and control electronics, which supports tighter process control and compliance with industrial noise and interference standards. The low 47 dB sound profile enhances worker comfort and permits closer equipment siting in open-plan facilities, while the WS34 Weathershield enables outdoor use and resilient operation in harsh environments, reducing space and enclosure requirements. Finally, the 150 kVA rating with robust frame 917 construction ensures reliable service in both indoor and outdoor installations, delivering predictable ROI through efficiency gains and extended service intervals.
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FAQs
Installers should plan for a proper foundation, clearances, and ventilation before mounting the N48M28T49CULS47. Connect the 480 V three-phase primary to the input bus, and wire the 208Y/120 V secondary to the distribution panel. Verify tap settings, with 2 taps at +2.5% and 4 taps at -2.5% for voltage regulation. Ensure proper grounding and EMI considerations, then perform functional tests to confirm load performance and protection clearances.
The K-Factor nonlinear design accounts for harmonic currents, reducing transformer overheating and voltage distortion under non-sinusoidal loading. This improves efficiency, extends insulation life, and minimizes thermal stress on windings. In facilities with drives and rectifiers, the transformer maintains output stability, lowering maintenance needs and improving equipment reliability across the power distribution network.
Yes, the N48M28T49CULS47 supports outdoor or harsh-environment installations when paired with the WS34 weather shield. WS34 provides environmental protection, enabling safer operation in exposed locations and reducing enclosure complexity. Plan for appropriate foundation and ventilation, and confirm mounting clearances to maintain access for maintenance while leveraging WS34 for resistance to weather effects.
The transformer includes taps at two positions: +2.5% FCAN and four positions at -2.5% FCBN. This setup allows fine voltage control on the 208Y/120 V secondary, maintaining output within tight tolerances despite input fluctuations or lengthened feeder runs. This capability supports sensitive equipment, reduces nuisance tripping, and sustains consistent process performance in variable-load environments.
The transformer carries Eaton’s standard warranty: one year from the date of installation or eighteen months from shipment, whichever occurs first. This coverage supports parts and workmanship, with Eaton’s service network available for field support, diagnostic guidance, and replacement parts. For detailed terms, refer to Eaton policy 25-000 and local distributor agreements.