Eaton N48M28F5516Q Transformer - K-Factor Nonlinear
Part Number: N48M28F5516Q
Quick Summary
Eaton N48M28F5516Q transformer provides high-efficiency power conversion for industrial facilities requiring reliable 480V to 208Y/120V distribution. Across aging fleets and variable loads, engineers struggle with energy waste, oversized cabinets, and high maintenance costs. UL Listed, DOE 2016 Efficient (10 CFR Part 431) compliance, and a rugged NEMA enclosure support safe, compliant operation in demanding environments, while factory testing and robust construction reduce project risk. This solution delivers proven efficiency for power management and distribution projects with aluminum windings, a floor-mount footprint, and adaptable voltage tapping to fit modern automation needs.
Product Information
Extended Description
N48M28F5516Q Eaton: Eaton K-Factor nonlinear ventilated transformer, Aluminum windings, NEMA 2, 60 Hz, 500 kVA, Electrostatic shield, Floor, Three-phase, 480 Delta V, 208Y/120 Vac, NEMA ST-20, 115°C, 500 kVA, Q
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M28F5516Q
UPC
786680239809
Product Length/Depth
44.25 in
Product Height
80.25 in
Product Width
64 in
Product Weight
3800 lb
Compliances
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Aluminum
Enclosure
NEMA 1
Type
Energy-efficient ventilated transformer
Frame
F
Insulation
220 °C
Material
Al windings
Mounting
Floor
Tap size
2 at +2.5%, 4 at -2.5%
Frequency rating
60 Hz
Kva Rating
500 kVA
Volt ampere rating
500 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
208Y/120 V
Sound Level
NEMA ST-20
Temperature rise
115 °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
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Eaton Specification Sheet - N48M28F5516Q
Feature → K-Factor nonlinear ventilated design with 13 rating → Improves harmonic handling and reduces stray losses, leading to lower operating temperatures and extended transformer life. Application: drives and automation panels in busy production lines benefit from predictable performance and reduced cooling needs. Business impact → Lower total cost of ownership through energy savings and less cooling load, enabling faster ROI for plant modernization. Feature → 500 kVA three-phase power rating with 480 V primary to 208Y/120 V secondary → Supports large, centralized distribution with minimized voltage drop. Application: large manufacturing cells and distribution cabinets streamline wiring, reducing cabinet footprint. Business impact → Improved load handling and simplified panel design, accelerating project schedules while maintaining regulator-ready voltages. Feature → Aluminum windings and 220 °C insulation with 115 °C rise → Lighter construction with strong thermal margins and durability in high-demand environments. Application: floor-mounted transformers in busy facilities where weight and heat are critical considerations. Business impact → Lower installation costs and enhanced reliability under peak loads. Feature → Electrostatic shield with field isolation → Reduces EMI and improves fault containment for sensitive control electronics. Application: automation networks and PLCs benefit from cleaner power delivery. Business impact → Fewer nuisance trips and improved protection of critical instrumentation. Feature → Tap size of 2 at +2.5% and 4 at -2.5% → Voltage regulation to accommodate minor supply variations. Application: sites with fluctuating supply or connected drives can maintain stable voltage levels. Business impact → More resilient operation and less risk of load upset, supporting consistent product quality. Feature → DOE 2016 Efficient and UL Listed with NEMA 1 enclosure → Compliance and performance assurance for regulated environments. Application: facilities seeking energy compliance and reliable indoor installation. Business impact → Reduced regulatory risk and energy costs, with straightforward procurement and installation in standard plant spaces.
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FAQs
The N48M28F5516Q is designed for floor mounting with a rugged indoor enclosure (NEMA 1 in our specs). Plan for adequate clearance for cooling, access for maintenance, and vibration isolation. Ensure ambient temperatures stay within insulation and rating limits and provide proper ventilation to sustain efficiency and reduce thermal stress on aluminum windings.
This is a three-phase transformer with a 480 V primary and a 208Y/120 V secondary. It supports voltage regulation via taps: 2 taps at +2.5% and 4 taps at -2.5%, allowing compensation for minor supply variations and ensuring stable downstream voltages for sensitive equipment.
DOE 2016 Efficient rating aligns the transformer with energy-performance targets that reduce core and winding losses. This translates to lower no-load and operating losses, smaller cooling requirements, and lower energy bills over the life of the device, while ensuring regulatory compliance and easier procurement for energy-conscious facilities.
The unit is UL Listed and DOE 2016 Efficient under 10 CFR Part 431. These certifications validate safety, reliability, and energy performance, which is essential for regulated installations and projects that demand third-party verification for procurement and commissioning in manufacturing and process environments.
The electrostatic shield reduces EMI and improves fault isolation, protecting sensitive control electronics and reducing the risk of nuisance trips. This feature supports easier maintenance, longer service intervals, and better reliability for automation systems, drives, and PLC-based control architectures in industrial plants.