Eaton MD75E92 Motor isolation transformer - UL Listed
Part Number: MD75E92
Quick Summary
The Eaton MD75E92 motor isolation transformer delivers clean, isolated power for drive systems in demanding industrial environments. Engineers often face voltage swings, transient surges, and downtime that disrupt production. UL Listed safety certification accompanies a DT-3 dry-type design with a 150°C rise, built for rugged indoor use. With 75 kVA capacity and ventilated construction, it supports scalable drive power while simplifying installation and maintenance. From OEM panel builds to retrofit projects, this drive isolation transformer provides reliable control power and protection margins for industrial drives.
Product Information
Extended Description
MD75E92 Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 460 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 460Y/266V, 150°C, 75 kVA, Al windings, Frame: 914D, uses WS39
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD75E92
UPC
786680331794
Product Length/Depth
22 in
Product Height
39 in
Product Width
29 in
Product Weight
535 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
Coil material
Aluminum
Design
DT-3
Frame
914D
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
460 V
Secondary Voltage
460Y/266 V
Temperature rise
150 °C rise
Volt ampere rating
75 kVA
Weathershield
WS39
Dry-type DT-3 construction with ventilated cooling and aluminum windings delivers safer indoor installation and robust heat dissipation, enabling consistent drive performance in variable loads. The 75 kVA rating supports scalable motor control power, reducing the need for multiple transformers and lowering total cost of ownership in heavy-duty applications. Tap changers, 1 at +5% FCAN and 1 at -5% FCBN, actively compensate for voltage fluctuations, improving motor efficiency and reducing gear wear in dynamic production lines. The WS39 weather shield enhances protection in semi-exposed environments, extending service life and lowering maintenance cycles. UL Listed certification confirms safety compliance, while the rugged DT-3 design aligns with industry standards for reliable operation in three-phase drive systems. Installation in standard 914D frames simplifies retrofits and panel integration, delivering faster time-to-value for OEMs and contractors.
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FAQs
MD75E92 is a three-phase transformer with a 460 V primary and a 460Y/266 V secondary. It uses taps at +5% FCAN and -5% FCBN for voltage compensation. Installers should mount the 914D frame in a ventilated enclosure, wire the primary to 460 V three-phase supply, and connect the secondary to the motor drive, ensuring proper grounding and clearances per safety standards.
Key specs include a 75 kVA power rating, 60 Hz frequency, three-phase configuration, 460 V primary voltage, and 460Y/266 V secondary voltage. The unit features aluminum windings, a 150°C rise temperature rating, and 1 at +5% and 1 at -5% taps to accommodate voltage variation in typical industrial environments.
Yes. The MD75E92 is designed as a drive isolation transformer with a ventilated, dry-type construction suitable for rugged packaging line environments. Its 75 kVA capacity supports medium-to-large drive loads, while voltage taps help maintain stable drive voltages amid fluctuating line conditions, reducing motor stress and improving line efficiency.
The MD75E92 is UL Listed, signaling compliance with recognized safety standards for electrical equipment. This certification helps streamline procurement, confirms safety for indoor industrial use, and supports regulatory requirements in many manufacturing environments, contributing to risk reduction and supplier qualification during audits.
Benefits include a dry-type, oil-free design that minimizes leakage and maintenance. Ventilated cooling supports reliable operation in continuous duty scenarios, while 75 kVA capacity reduces the need for multiple transformers. The included WS39 weather shield and DT-3 construction further extend service life, lowering total cost of ownership and improving uptime for critical manufacturing processes.