Eaton MD93D70X motor isolation transformer - UL Listed
Part Number: MD93D70X
Quick Summary
MD93D70X is a motor drive isolation transformer used to decouple drive electronics in industrial power systems. This approach minimizes transients and electrical noise that can shorten drive life and trigger unplanned downtime. UL Listed certification demonstrates safety and compliance for demanding industrial environments. With a 93 kVA rating and a DT-3 dry-type design, it delivers robust isolation for three-phase motor drives while supporting voltage regulation through taps and a WS19-protected enclosure. The unit's aluminum windings and factory-built enclosure simplify installation, reduce maintenance complexity, and help plants meet reliability targets while maintaining efficient power distribution across manufacturing cells.
Product Information
Extended Description
MD93D70X Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 480 delta, Taps: 2 at +2.5% FCAN, 2 at -2.5% FCBN, SV: 380Y/220, 150°C, 93 kVA, Al windings, Frame: 916A, uses WS19
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD93D70X
UPC
786680080241
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
812 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
2 at +2.5% FCAN, 2 at -2.5% FCBN
Type
Dry Type Distribution, Drive Isolation Transformer
Frequency rating
50-60 Hz
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
380Y/220 V
Temperature rise
150 °C rise
Volt ampere rating
93 kVA
Weathershield
WS19
Feature: 93 kVA three-phase capacity with 480 V delta primary and 380Y/220 V secondary. Business Impact: supports high-power drive isolation, reduces voltage stress, and protects sensitive electronics. Application: ideal for machine tools, conveyors, and robotics. Feature: Voltage taps with 2 at +2.5% FCAN and 2 at -2.5% FCBN. Business Impact: enables on-site voltage compensation without rewiring, improving uptime and performance. Application: plants with variable supply and load. Feature: Dry-type DT-3 construction with aluminum windings and a 150 °C rise. Business Impact: safer, lower maintenance risk, and easier cooling in air-cooled environments. Application: indoor electrical rooms and control panels. Feature: WS19 Weathershield and frame 916A enable durable, versatile installation. Business Impact: expands installation options and reduces enclosure requirements. Application: outdoor-rated or rugged environments with thermal cycling. Feature: UL Listed certification and Eaton warranty provide safety assurance and service predictability. Business Impact: helps meet safety standards, supports maintenance planning, and reduces total cost of ownership. Application: facility-scale power distribution with strict compliance needs.
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FAQs
For mounting, select a ventilated indoor location with space for airflow. Use the DT-3 design housing, frame 916A, and WS19 protection as specified. Permit clearances for 23.42 in depth, 28.22 in width, and 48.56 in height. Verify 50-60 Hz compatibility and proper grounding according to Eaton installation instructions.
Yes. The transformer offers two taps at +2.5% and two at -2.5% to fine-tune output under FCAN/FCBN conditions. This helps compensate line voltage variations and maintain stable secondary voltage for drive electronics.
Yes. UL Listed certification confirms compliance with safety standards for industrial electrical equipment. The unit supports three-phase operation with a 480 V primary and 380Y/220 V secondary, providing reliable, compliant plant power distribution.
Typical applications include motor drives in conveyors, machine tools, robotics, and other plant equipment where isolating drive electronics from the power source improves protection against transients and electrical noise, boosting uptime and equipment longevity.
Key specs include 93 kVA, 480 V delta primary, 380Y/220 V secondary, 50-60 Hz, aluminum windings, DT-3 design, WS19 protection, and a 150 °C temperature rise, all housed in a three-phase dry-type package.