Eaton MD14E88ZZ Open Core-Coil Transformer - UL Recognized
Part Number: MD14E88ZZ
Quick Summary
MD14E88ZZ is an Eaton open core-coil ventilated transformer for drive isolation and three-phase power distribution. In many facilities, heat buildup and restricted ventilation reduce reliability of dry-type transformers, leading to longer downtime and maintenance costs. This unit carries UL Recognized certification to support safe deployment, with regional CE marking and IP considerations varying by installation and regulatory requirements. Leveraging a dry-type DT-3 design with aluminum windings and an open core-coil assembly, it delivers robust performance in harsh environments. The combination of vented cooling, voltage tap adjustments, and a rugged 908S frame translates into lower total cost of ownership while ensuring compliance and safer operation across industrial power systems.
Product Information
Extended Description
MD14E88ZZ Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 230 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 230Y/133V, 150°C, 14 kVA, Al windings, Frame: 908S
Product Name
Eaton Open core-coil ventilated transformer
Catalog Number
MD14E88ZZ
UPC
786680056192
Product Length/Depth
14.12 in
Product Height
30 in
Product Width
20.12 in
Product Weight
164 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 Recognized
Catalog Notes
Open type core and coil assembly
Coil material
Aluminum
Design
DT-3
Frame
908S
Tap size
1 at +5% FCAN, 1 at -5% FCBN
Type
Dry Type Distribution, Drive Isolation Transformer
Frequency rating
60 Hz
Phase
Three-phase
Primary voltage
230 V
Secondary Voltage
230Y/133 V
Temperature rise
150 °C rise
Volt ampere rating
14 kVA
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - MD14E88ZZ
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: Open core-coil ventilated design improves heat dissipation and reduces temperature rise, enabling reliable 60 Hz operation in demanding environments and extending component life in production lines. Application: Drive isolation in motor drives and press automation where thermal management is critical and panel space is at a premium. Feature → Business Impact → Application: 14 kVA three-phase rating with 230 V primary and 230Y/133 V secondary supports flexible distribution and load sizing, improving system resilience and voltage regulation across feeders. Application: Factory floor power distribution where precise secondary voltages reduce equipment stress and downtime. Feature → Business Impact → Application: Tap settings at +5% FCAN and -5% FCBN enable voltage balancing during supply fluctuations, reducing nuisance tripping and preserving motor efficiency. Application: Applications with variable input voltage or wide utility swings. Feature → Business Impact → Application: Aluminum windings and DT-3 dry-type construction minimize cost and simplify procurement while offering corrosion resistance and low maintenance. Application: New installations and retrofit projects seeking durable, cost-effective transformers. Feature → Business Impact → Application: Frame 908S and open type housing support straightforward installation in standard switchgear footprints, with UL Recognized certification easing compliance checks. Application: retrofit into existing panels or OEM equipment complements common electrical enclosures. Feature → Business Impact → Application: 150°C rise insulation rating provides a robust margin for demanding duty cycles, supporting longer motor and drive life and reducing overheat events. Application: High-load processes where ambient temperatures and continuous operation are expected.
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FAQs
For panel installations, use the 908S frame with the open core-coil arrangement to maximize ventilation. Ensure adequate clearance for ventilation paths, secure mounting to vibration-resistant brackets, and account for weight (164 lb) during handling. Verify access to voltage taps and maintain proper clearance from hot surfaces, wiring ducts, and protective devices.
The unit delivers 14 kVA at 60 Hz in a three-phase configuration, with a 230 V primary and 230Y/133 V secondary. It features taps at +5% FCAN and -5% FCBN, aluminum windings, and a 150 °C insulation rise. The DT-3 design and ventilated construction support reliable operation in demanding environments.
Yes. The MD14E88ZZ is a drive isolation transformer designed for three-phase distribution, providing voltage stabilization and EMI/overvoltage protection for motor drives. Its ventilated dry-type construction helps manage heat from continuous drive operation, minimizing conduction losses and enhancing overall drive reliability.
The MD14E88ZZ carries UL Recognized certification, indicating compliance with safety standards for electrical components. Regional certifications such as CE or IP ratings depend on your location and installation requirements, so consult local approvals and Eaton documentation to confirm applicability for your facility.
Eaton provides a warranty per policy 25-000: one year from date of installation or eighteen months from shipment, whichever occurs first. For maintenance, ensure regular inspection of terminations, verify tap settings after voltage fluctuations, and coordinate with Eaton support for replacement parts or service timelines to minimize downtime.