Eaton N29R28B12EE Nonlinear Transformer - NEMA TP-1
Part Number: N29R28B12EE
Quick Summary
Eaton N29R28B12EE nonlinear transformer provides reliable 208 V to 208Y/120 V three-phase power for industrial equipment. Engineers face heat and voltage stability challenges in high-density panels, often sacrificing efficiency or service life. Catalog notes indicate NEMA TP-1 efficiency with electrostatic shielding and WS34 weather protection, reinforcing reliability in harsh environments. With an 112.5 kVA rating and selectable taps, this unit reduces energy waste, simplifies maintenance, and supports scalable power distribution across facilities, aligning with power management and distribution strategies.
Product Information
Extended Description
N29R28B12EE Eaton: Eaton K-Factor nonlinear ventilated transformer, KT-13 (3-phase), PV 208V, Taps: 1 at +5%/2 at -5%, SV 208Y/120V, 80°C rise, 112.5 kVA, EE
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N29R28B12EE
UPC
786680111419
Product Length/Depth
24.67 in
Product Height
56.17 in
Product Width
31.44 in
Product Weight
1395 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
287A
Type
Nonlinear ventilated transformer
Frame
917
Tap size
1 at +5% FCAN, 2 at -5% FCBN
Frequency rating
60 Hz
Volt ampere rating
112.5 kVA
Phase
Three-phase
Primary voltage
208 V
Secondary Voltage
208 Y/120 V
Temperature rise
80 °C rise
Special features
Electrostatically shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N29R28B12EE
Feature 1: 112.5 kVA three-phase transformer with 208 V primary and 208 Y/120 V secondary. Business impact: supports heavy machinery loads with stable voltage, minimizing downtime and reducing equipment wear. Application: ideal for manufacturing lines and industrial drives where precise voltage staging is critical. Feature 2: Tap settings—1 at +5% and 2 at -5%—Business impact: maintains voltage within tolerance under fluctuating supply, reducing nuisance tripping and extending component life. Application: panel boards and power distribution blocks in variable utility conditions. Feature 3: K-Factor nonlinear ventilated design with 80 °C rise. Business impact: enhances heat dissipation for higher load profiles, improving reliability and efficiency. Application: dense electrical rooms and outdoor enclosures exposed to ambient heat. Feature 4: Aluminum coil material and 287A wiring connection. Business impact: corrosion resistance and robust connection integrity, lowering long-run maintenance costs. Application: long-service installations in harsh environments. Feature 5: Weathershield WS34 and electrostatic shielding. Business impact: superior environmental and EMI shielding, reducing interference with sensitive equipment. Application: outdoor installations and data/controls interfaces in industrial facilities. Feature 6: Frame 917 with 24.67 in depth, 31.44 in width, 56.17 in height; weight 1395 lb. Business impact: defined footprint and weight support planning for safe installation and crane-lift workflows. Application: retrofit projects and new builds with space planning and rigging considerations.
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FAQs
This model is a heavy, floor-mounted transformer with a 24.67 in depth, 31.44 in width, and 56.17 in height, weighing 1395 lb. Ensure adequate crane or lift equipment, a stable, level pad, proper ventilation, and access for tapping adjustments. Wiring connects via 287A terminals; follow manufacturer guidelines for torque and termination procedures. Allow space for cooling air and inspection clearances.
Key specs include a 112.5 kVA three-phase transformer with 208 V primary and 208Y/120 V secondary, 60 Hz operation, and an 80 °C rise. Tap settings are +5% and -5%. The unit uses aluminum coils, features electrostatic shielding, and includes WS34 weather protection, making it suitable for demanding industrial environments.
Ideal for industrial power management and distribution tasks, including feeding motor drives, presses, and process equipment with tight voltage control. The +/− tap capability helps compensate for supply swings, while the nonlinearity and shielding reduce EMI and heat-related losses, improving uptime in manufacturing lines and automation systems.
The catalog notes indicate NEMA TP-1 efficiency for this transformer, with certification status listed as 'Contact Manufacturer' for formal approvals. Plan for verification of regional requirements and any customer-specific standards with Eaton engineering, especially for installation in regulated environments or exposed locations.
With 112.5 kVA capacity, 80 °C rise, and robust construction (aluminum windings, shielding, WS34), expected benefits include reduced energy waste, lower maintenance frequency due to reliable cooling, and fewer outages from voltage instability. A proactive maintenance plan should include periodic insulation checks, terminal torque verification, and environmental protection inspections.