Eaton N29R28F49A K-Factor Nonlinear Transformer - UL Listed
Part Number: N29R28F49A
Quick Summary
The Eaton N29R28F49A K-Factor nonlinear ventilated transformer provides robust three-phase power management for critical industrial distribution applications. Engineers often confront voltage instability and overheating in high-load switchgear, especially when integrating renewables or large motor drives. UL Listed safety certification supports reliability, while the K-13 design, electrostatic shielding, and ventilated frame enhance protection against harmonic currents and heat buildup. This solution helps facilities meet stringent reliability targets and maintain compliance, offering flexible regulation with taps at +5% and -5% FCBN/FCAN. With aluminum windings, a WS34 weathershield, and a 150 kVA rating, installation and ongoing efficiency benefit from proven Eaton design practices.
Product Information
Extended Description
N29R28F49A Eaton: K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 208V, Taps: 1 at +5% FCAN, 2 at -5% FCBN, SV: 208Y/120V, 115°C, 150 kVA , Al windings , Elec. Shield, Frame: 918A, uses WS34
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N29R28F49A
UPC
786680014611
Product Length/Depth
30.68 in
Product Height
62.18 in
Product Width
31.44 in
Product Weight
1327 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
UL Listed
Catalog Notes
Model A
Coil material
Aluminum
Type
Ventilated transformer
Design
K-13
Frame
918A
Tap size
1 at +5% FCAN, 2 at -5% FCBN
Frequency rating
60 Hz
Kva Rating
150 kVA
Phase
Three-phase
Primary voltage
208 V
Secondary Voltage
208Y/120 V
Temperature rise
115 °C rise
Special features
Electrostatically Shielded
Weathershield
WS34
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N29R28F49A
Feature → Business Impact → Application: The K-13 design and aluminum windings reduce thermal stress and stray losses, improving overall efficiency and prolonging service life in demanding environments, such as manufacturing lines and data centers. This translates to lower operating costs and reduced maintenance cycles for mid-to-large industrial facilities. Application-wise, the 150 kVA, three-phase configuration supports critical loads while keeping footprint manageable in machine rooms and utility spaces. Feature → Business Impact → Application: The ±5% tap changer offers precise voltage regulation under fluctuating line conditions, minimizing voltage drop for sensitive equipment and preventing nuisance tripping in motors and drives. This is essential for facilities with variable loads or renewable integration where grid conditions can shift rapidly. Feature → Business Impact → Application: Ventilated construction with WS34 weather shield provides superior cooling and outdoor suitability, enabling safer outdoor installations and longer intervals between service interventions, even in warm climates or high-ambient environments. Feature → Business Impact → Application: Electrostatic shielding and frame 918A support robust fault tolerance and EMI protection, which helps meet stricter compliance requirements for data centers and control rooms, while easing integration with existing bus duct and switchgear. Feature → Business Impact → Application: The 208 V primary and 208Y/120 V secondary configuration delivers clean, stable secondary voltage for control panels, PLCs, and motor starters, reducing voltage excursions and improving uptime across industrial automation systems.
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FAQs
Plan for adequate clearance around the frame 918A unit to ensure proper ventilation. Consider vented cooling paths and WS34 weather shield requirements for outdoor placements. Verify the 208 V primary and 208Y/120 V secondary wiring with appropriate gauge conductors, and use the +5%/ -5% taps to maintain voltage under load swings. Ensure UL Listed compliance and a suitable mounting surface.
Key specs include a 150 kVA rating, 60 Hz frequency, three-phase configuration, primary 208 V, secondary 208Y/120 V, aluminum coil material, and a temperature rise of 115 °C. It features a K-Factor nonlinear design (K-13), frame 918A, electrostatic shielding, and WS34 weather shield, with taps at +5% FCAN and 2 taps at -5% FCBN.
Yes. The transformer is designed for three-phase 208 V primary and 208Y/120 V secondary, making it suitable for data centers, manufacturing floors, and control panels requiring stable secondary voltages. Its K-Factor nonlinear design helps mitigate harmonic currents, while the aluminum windings and electrostatic shield enhance reliability under continuous operation in data-intensive environments.
The N29R28F49A carries UL Listed certification, underscoring adherence to recognized safety standards. This simplifies procurement with confidence in safety and reliability, supports compliance with electrical installation codes, and aligns with Eaton’s warranty and service programs, reducing regulatory risk across industrial sites.
Expect lower ongoing maintenance due to robust aluminum windings, a ventilated design for efficient heat dissipation, and the WS34 weather shield for outdoor resilience. The 150 kVA rating supports substantial load handling, potentially reducing the need for multiple smaller transformers. The UL Listed certification further minimizes compliance-related downtime and supports longer asset life.