Eaton N48M28T49EECS Transformer - K-Factor, NEMA TP-1
Part Number: N48M28T49EECS
Quick Summary
Eaton N48M28T49EECS transformer powers 3-phase distribution in industrial plants. Operators struggle with efficiency loss and excessive heat, especially under harmonic-rich loads; this nonlinear ventilated design helps manage harmonics and temperature rise. Certifications include NEMA TP-1 efficient status, with SIL, CE, and IP approvals available on request. The unit features aluminum windings, an EE frame, and adjustable taps for ±2.5% changes, simplifying on-site commissioning. For businesses, the combination of robust protection and predictable performance reduces maintenance costs and extends equipment life, delivering better energy efficiency, easier retrofits, and improved power quality in demanding applications.
Product Information
Extended Description
N48M28T49EECS Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 208Y/120V, 150°C rise w/ 200°C insulation systeam, 150 kVA, EE, CS
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T49EECS
UPC
786680111723
Product Length/Depth
24.67 in
Product Height
56.17 in
Product Width
31.44 in
Product Weight
1189 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
Contact Manufacturer
Catalog Notes
NEMA TP-1 efficient.
Coil material
Aluminum
Wiring connection
292A
Type
Nonlinear ventilated transformer
Frame
917
Tap size
2 at +2.5% FCAN 4 at -2.5% FCBN
Frequency rating
60 Hz
Volt ampere rating
150 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208 Y/120 V
Temperature rise
150 °C rise
Special features
Electrostatic copper shield
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M28T49EECS
KT-13 nonlinear ventilated transformer design reduces harmonic heating by shaping the flux path and cooling path, delivering lower thermal stress and longer insulation life while cutting energy losses. This translates to higher uptime and reduced cooling costs in harsh industrial environments where non-linear loads are common. The 480 V primary and 208Y/120 V secondary wiring arrangement provides compatibility with standard distribution schemes, enabling faster integration with existing switchgear and panel boards while minimizing installation risk. Tap selectors—two at +2.5% and four at -2.5%—allow precise voltage regulation during commissioning and load shifts, reducing voltage fluctuations that can degrade performance of sensitive equipment. Aluminum windings and the EE frame 917 construction deliver durable performance, while the 150°C rise with 200°C insulation supports tougher ambient conditions without compromising reliability. The electrostatic copper shield and WS34 weather shield enhance short-circuit protection and outdoor resilience, improving long-term service life in exposed installations. NEMA TP-1 efficiency reinforces energy savings and compliance expectations, contributing to lower operating costs across the facility. With a 1-year warranty (or 18 months from shipment, whichever comes first), customers gain confidence in long-term performance. Weight, dimensions, and mounting compatibility ensure straightforward replacement or retrofits in existing basements or equipment rooms, reducing downtime during capital projects.
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FAQs
Begin with proper clearances and a secure, level mount compatible with the EE frame 917. Connect primary 480 V and secondary 208Y/120 V wiring per 292A terminal scheme, and verify the tap settings (2 at +2.5%, 4 at -2.5%) during commissioning. Use proper grounding, thermal management, and enclosure protection (WS34 where applicable) to ensure reliable operation in service.
The unit is a 150 kVA, three-phase transformer operating at 60 Hz with a 480 V primary and 208Y/120 V secondary. It features KT-13 nonlinear cooling for harmonic mitigation, aluminum windings, an EE frame 917, and taps for ±2.5% voltage adjustment. Temperature rise is 150 °C with a 200 °C insulation system, and it includes an electrostatic copper shield and WS34 weather shield.
Yes. The N48M28T49EECS uses a K-Factor nonlinear design (KT-13) to limit harmonic heating, improving reliability under non-sinusoidal loads typical of industrial equipment, drives, and other AVR-heavy systems. This helps maintain power quality, reduce cooling requirements, and extend insulation life in such environments.
Catalog notes indicate NEMA TP-1 efficiency. Additional certifications such as SIL, CE, and IP ratings are available on request from the manufacturer. It is important to confirm current approvals for your project specifications and regional compliance requirements.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first. The design uses aluminum windings and a robust EE frame to reduce maintenance needs, while the protective features (electrostatic shield and WS34) minimize downtime and extend service life in tough environments.