Eaton N48D28B5516QSRTR Transformer - DOE 2016 Efficient
Part Number: N48D28B5516QSRTR
Quick Summary
Eaton N48D28B5516QSRTR is a high-capacity nonlinear ventilated transformer for reliable 3-phase power in industrial facilities. Many sites struggle with heat buildup, energy waste, and voltage instability that erode uptime and escalate operating costs. This model delivers DOE 2016 Efficient performance and UL Listed assurance, with a NEMA 1 enclosure and CASE F frame designed for indoor plant environments. Its aluminum windings and robust insulation support long service life in demanding conditions, while 480 V delta primary and 208Y/120 V secondary configurations align with common industrial distribution schemes. The included tap options of ±2.5% (2 AT) provide voltage regulation amid fluctuating supply without sacrificing efficiency. Overall, it combines reliability, compliance, and value for engineering-led procurement teams.
Product Information
Extended Description
N48D28B5516QSRTR Eaton: EATON K-FACTOR NONLINEAR VENTILATED TRANSFORMER DOE 2016, 500 KVA, ALUMINIUM, 60 HZ, 3PH, 480V DELTA, 208Y/120V, NEMA ST-20, 80°C RISE, NEMA 1, CASE F, 200°C, 2 AT +2.5%, 2 AT -2.5% (OR 2 FCAN @ 2.5%, 2 FCBN @ 2.5%), RH7
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48D28B5516QSRTR
UPC
786689884253
Product Length/Depth
44.25 in
Product Height
80.25 in
Product Width
64 in
Product Weight
4300 lb
Compliances
DOE2016 Efficient
Certifications
UL Listed
Catalog Notes
10 CFR Part 431 (2016) Efficient
Coil material
Aluminum
Enclosure
NEMA 1
Frame
CASE F
Insulation
220 °C
Tap size
2 AT +2.5%, 2 AT -2.5% (OR 2 FCAN @ 2.5%, 2 FCBN @ 2.5%)
Frequency rating
60 Hz
Kva Rating
500 kVA
Volt ampere rating
500 kVA
Phase
Three-phase
Primary voltage
480 V delta
Secondary Voltage
208Y/120 V
Sound Level
NEMA ST-20
Temperature rise
80 °C rise
Efficiency
10 CFR Part 431-2016 (DOE 2016)
Special features
CERT. SOUND & TEST REPORT
Weathershield
RH7
Feature → K-Factor nonlinear ventilated design reduces hotspot formation and improves thermal stability. Business impact → Lower cooling loads and extended transformer life translate into measurable energy savings and improved uptime. Application → Ideal for facilities with variable loading and indoor installations such as manufacturing lines, data centers, and process equipment rooms. Feature → Tap options of 2 AT +2.5% and 2 AT -2.5% (or 2 FCAN/FCBN @ 2.5%) enable precise voltage regulation across supply swings. Business impact → Minimizes voltage excursions, protects sensitive loads, and stabilizes motors and drives under fluctuating utility conditions. Application → Suitable for plants near fluctuating feeders or long feeder runs from substations. Feature → Aluminum windings and CASE F frame with an 80 °C rise rating in a NEMA 1 enclosure. Business impact → Enhanced thermal robustness and indoor suitability with straightforward installation and maintenance. Application → Plant rooms and indoor electrical spaces requiring durable construction and predictable performance. Feature → DOE 2016 Efficient, UL Listed, and 10 CFR Part 431 Efficient compliance. Business impact → Regulatory alignment reduces energy penalties and simplifies procurement with recognized standards. Application → Facilities subject to energy reporting or compliance programs across manufacturing and data-center environments. Feature → Dimensions 44.25 in long, 64 in wide, 80.25 in high; weight 4300 lb; 60 Hz three-phase. Business impact → Clear integration planning for floor space, crane access, and structural support with a defined footprint. Application → New installations or retrofits in factory floors and electrical rooms requiring substantial, proven power delivery.
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FAQs
The N48D28B5516QSRTR is a 500 kVA three-phase transformer configured for 480 V delta primary and 208Y/120 V secondary at 60 Hz. With a CASE F frame and NEMA 1 enclosure, it is designed for indoor installation. Tap options include ±2.5% adjustments to maintain output under input fluctuations, and the unit supports straightforward mechanical mounting and connection to standard bus and panel assemblies.
This model is rated DOE 2016 Efficient, reducing standby and load losses, and is UL Listed for safety and reliability. It also adheres to 10 CFR Part 431 Efficient standards, aligning with federal efficiency requirements. These certifications simplify procurement for regulated facilities and support energy-compliance reporting and incentive programs.
Yes. The transformer provides voltage regulation through taps at ±2.5%, accommodating fluctuating input conditions and long feeders. The 480 V delta to 208Y/120 V secondary configuration supports stable downstream voltages for motors and drives, reducing performance variability in facilities with variable utility supply or tall feeder runs.
Key certifications include UL Listed safety certification and DOE 2016 Efficient compliance. Features like aluminum windings, 80 °C rise insulation, 220 °C insulation class, and NEMA 1 indoor enclosure enhance reliability and thermal performance. The 2AT voltage taps and rugged CASE F frame assist with installation in demanding industrial spaces while preserving efficiency over time.
Dimensions are 44.25 in (length) × 64 in (width) × 80.25 in (height) with an approximate weight of 4300 lb. Plan for floor space, crane or hoist access for placement, and adequate floor loading. A CASE F frame and NEMA 1 enclosure simplify integration with standard electrical rooms and support easy serviceability.