Eaton MD93E93 Motor drive isolation transformer - UL Listed
Part Number: MD93E93
Quick Summary
MD93E93 is a motor drive isolation transformer that protects drive electronics in industrial automation. In harsh plant environments, voltage spikes and thermal stress threaten uptime and equipment life. UL Listed safety compliance reinforces reliable operation in regulated settings. Designed for three-phase 460 V primary and 575Y/332 V secondary, it supports 93 kVA applications with WS19 weather shielding, improving control stability and reducing maintenance costs for motor drive systems and automation networks.
Product Information
Extended Description
MD93E93 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: 575Y/332V, 150°C, 93 kVA, Al windings, Frame: 916A, uses WS19
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD93E93
UPC
786680332210
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
754 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
916A
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
575Y/332 V
Temperature rise
150 °C rise
Volt ampere rating
93 kVA
Weathershield
WS19
The MD93E93 employs a DT-3 dry-type distribution design with aluminum windings, delivering robust performance in compact footprints and minimizing weight without sacrificing strength. Feature → Business Impact → Application: DT-3 dry-type construction provides inherent fire-safe operation and simpler cooling, reducing installation complexity on factory floors and enabling safer motor drive integration for CNCs and automated conveyors. Feature → Business Impact → Application: 3-phase, 60 Hz operation with 460 V delta primary and 575Y/332 V secondary delivers versatile voltage scaling for VFDs, supporting a wide range of motors while minimizing harmonics and voltage disturbances in drive systems. Feature → Business Impact → Application: +5% and -5% voltage taps (+5 FCAN, -5 FCBN) allow precise voltage tuning to maintain motor performance under fluctuating mains, reducing downtime and extending bearing life in robotics and packaging lines. Feature → Business Impact → Application: WS19 weather shield and ventilated design enable outdoor or harsh-environment installations, improving protection against dust, moisture, and temperature rise in outdoor substations or manufacturing yards. Feature → Business Impact → Application: Frame 916A and 93 kVA rating provide a scalable, reliable power interface for large motor drives, delivering consistency across multiple production lines with easy mounting and retrofit compatibility.
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FAQs
When installing the MD93E93, plan for a three-phase 460 V input and ensure a ventilated location compatible with the DT-3 design. The WS19 weather shield supports outdoor or harsh environments, while the 916A frame size fits standard electrical rooms. Verify clearances for cooling and access to taps for +5% and -5% adjustments to maintain voltage within tolerance during startup and load changes.
The transformer is rated for 93 kVA with a three-phase, 60 Hz operation. Primary voltage is 460 V with a secondary of 575Y/332 V. It uses aluminum windings, features a DT-3 dry-type distribution design, and provides voltage taps at +5% FCAN and -5% FCBN. The unit supports a 150°C rise and is UL Listed for electrical safety compliance.
MD93E93 is ideal for motor drive isolation in industrial automation, including VFD-driven conveyors, robotics, and CNC machinery. Its dry-type, ventilated design and WS19 shield make it suitable for factory floors and outdoor installations where protection from transient spikes and environmental conditions is essential, while maintaining stable voltage to sensitive drive electronics.
MD93E93 carries UL Listed certification, ensuring compliance with recognized electrical safety standards. This certification is critical for equipment installed in regulated facilities, meeting safety and reliability expectations. While CE or IP ratings are not specified in the provided data, UL Listing demonstrates industry-accepted safety performance for industrial transformer applications.
The 93 kVA dry-type transformer reduces cooling demands and minimizes oil-related maintenance, while aluminum windings contribute to lighter weight and corrosion resistance. The robust enclosure with WS19 shield extends outdoor service life, reducing replacement intervals. Combined with voltage taps and 60 Hz reliability, this translates to lower maintenance costs and improved line availability in continuous production environments.