Eaton N48M28T2216CU K-Factor Ventilated Transformer - UL
Part Number: N48M28T2216CU
Quick Summary
Eaton N48M28T2216CU is a K-Factor nonlinear ventilated transformer for industrial power distribution. Engineers often wrestle with heat, energy losses, and compliance when scaling transformer fleets. UL Listed, DOE 2016 Efficient, and 10 CFR Part 431 alignment help ensure regulatory compliance while reducing operating costs. This unit features a three-phase 480 V primary and 208Y/120 V secondary, housed in a rugged NEMA 2 enclosure for floor-mounted installations in challenging factory environments. Its robust construction and efficiency focus support reliable uptime, lower energy waste, and simplified maintenance in demanding applications.
Product Information
Extended Description
N48M28T2216CU Eaton: Eaton K-Factor nonlinear ventilated transformer, Copper windings, NEMA 2, FR945, 60 Hz, 220°C, 225 kVA, Floor, Three-phase, 480 Delta V, 208Y/120 Vac, NEMA ST-20, 150°C, 225 kVA, 480 Vac-208Y/120 Vac, WS62, 283B, DOE 2016
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28T2216CU
UPC
786680192593
Product Length/Depth
33.5 in
Product Height
66.18 in
Product Width
42.18 in
Product Weight
2628 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.
Compliances
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Copper
Enclosure
NEMA 2
Wiring connection
283B
Type
Energy-efficient ventilated transformer
Frame
FR945
Insulation
220 °C
Mounting
Floor
Tap size
2 at +2.5%, 4 at -2.5%
Frequency rating
60 Hz
Kva Rating
225 kVA
Volt ampere rating
225 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Sound Level
NEMA ST-20
Temperature rise
150 °C rise
Voltage rating
480 Vac-208Y/120 Vac
Efficiency
10 CFR Part 431-2016 (DOE 2016)
Modification 1
Electrostatic shield
Special features
K-factor 13
Weathershield
WS62
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Eaton Specification Sheet - N48M28T2216CU
Copper windings provide low resistance and reduced losses, delivering measurable efficiency gains and improved thermal stability in continuous operation, which translates to lower operating costs and cooler equipment rooms in data centers and manufacturing lines. The K-Factor 13 designation equips this transformer to handle non-linear loading without excessive hotspot formation, supporting higher reliability in power-rich environments and helping facilities meet strict power quality targets. A NEMA 2 enclosure combined with floor mounting simplifies installation and protects critical components from dust and moisture, reducing downtime and maintenance cycles in industrial plants and oil/gas facilities. Copper windings, insulation rated to 220 °C, and a 150 °C rise rating contribute to durable performance under demanding ambient conditions, while the FR945 frame and 283B wiring facilitate straightforward integration with existing switchgear and bus systems. Tap changers at +2.5% and -2.5% enable precise voltage balancing across varying loads, improving voltage regulation at the point of use and lowering transformer thermal stress. DOE 2016 efficiency and UL listing ensure compliance, while WS62 weather shielding supports outdoor or semi-exposed installations, expanding site options. Electrostatic shield modification reduces EMI and improves reliability in sensitive environments, addressing common concerns about electrical noise and cross-talk. Overall, these features converge to deliver improved energy efficiency, longer service life, and lower total cost of ownership for facilities requiring robust, compliant power distribution solutions.
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FAQs
The N48M28T2216CU is a three-phase transformer intended for floor mounting with a FR945 frame and 283B wiring. For seamless installation, ensure compatible disconnects, proper cooling clearance for the NEMA 2 enclosure, and alignment with existing 480 V primary/208Y/120 V secondary distribution. Verify available space, mounting surface strength, and channeling for ventilation to maximize performance and service life.
With a K-Factor 13 and copper windings, the transformer handles non-linear loads with reduced temperature rise and lower harmonic losses. The 225 kVA rating, 60 Hz operation, and 150 °C rise provide solid capacity margins for peak demand. Tap settings of +2.5% and -2.5% allow voltage balancing under varying loads, maintaining voltage at the point of use and protecting downstream equipment.
Yes. The unit’s 480 V to 208Y/120 V secondary, three-phase configuration, and robust NEMA 2 enclosure align with typical data center and manufacturing line requirements. DOE 2016 efficiency and UL listing support regulatory compliance, while WS62 weather shield and electrostatic shield modification enhance reliability in challenging environments often found in data centers, machine rooms, and assembly facilities.
This transformer is UL Listed and DOE 2016 Efficient, with 10 CFR Part 431 alignment. These certifications ensure compliance with electrical safety standards and energy-conservation regulations. The electrostatic shield option further addresses EMI concerns in sensitive spaces, making it suitable for regulated industries where documentation and traceability are critical.
Maintenance is streamlined by a rugged NEMA 2 enclosure, copper windings, and a durable FR945 frame, reducing routine service needs. The 225 kVA rating paired with high efficiency lowers energy costs over time, contributing to a favorable return on investment. Warranty terms (one year from installation or 18 months from shipment) add assurance during early operation.