Eaton MD93E92 Motor drive isolation transformer - UL Listed
Part Number: MD93E92
Quick Summary
Eaton MD93E92 motor drive isolation transformer provides isolation and supply stabilization for industrial drive systems. Maintenance teams often contend with voltage sags, transients, and startup-related downtime that disrupt production. UL Listed certification supports safety and reliability, while the DT-3 dry-type design and WS19 weather shield enhance field performance in challenging environments. With a 93 kVA rating and flexible tap options, this transformer scales to evolving automation needs, delivering consistent power to motor drives and protecting both equipment and operators. The combination of robust construction, installation versatility, and strong service terms translates into measurable uptime and lower total cost of ownership for industrial facilities.
Product Information
Extended Description
MD93E92 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, 93 kVA, Al windings, Frame: 916A, uses WS19
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD93E92
UPC
786680331817
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
710 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
460Y/266 V
Temperature rise
150 °C rise
Volt ampere rating
93 kVA
Weathershield
WS19
Feature → Business Impact → Application. Dry-type, ventilated transformer construction reduces insulation risk and enables safer, easier maintenance in plant environments, improving reliability and serviceability for motor drive systems. Benefit: lower maintenance costs and faster asset servicing; Application: retrofit projects and new drives in metals, plastics, and packaging lines. Three-phase, 60 Hz operation with a 93 kVA rating supports medium-load motor drives, delivering stable power to prevent drive faults and shorten startup times. Application: CNC machines, extruders, and conveyor systems where consistent torque is critical. Primary 460 V and secondary 460Y/266 V configurations with taps at +5% and -5% FCAN/FCBN provide voltage matching flexibility, reducing harmonics and improving drive performance. Application: sites with varying supply quality or motor voltages. Aluminum coil windings offer lightweight durability and good conductivity, contributing to cooler operation under peak loads and easier replacement pacing. Application: OEMs seeking durable, service-friendly components in automation gear. WS19 weathershield provides protection against dust, moisture, and environmental exposure, enabling outdoor or semi-exposed installations without compromising safety. Application: outdoor substations or protected enclosures for workshops with harsh conditions. UL Listed certification communicates compliance with electrical safety standards, supporting procurement and installation under common code requirements. Application: compliance-focused projects and regulated industrial environments. The DT-3 design, rugged frame 916A, and 150°C rise rating collectively support aggressive automation architectures while maintaining acceptable temperature margins. Application: high-demand motor drives in high-ambient environments, where cooling and enclosure management are key.
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FAQs
Install MD93E92 in a ventilated, accessible location compatible with its 23.42 in depth, 28.22 in width, and 48.56 in height footprint. Use WS19 weather shield for outdoor or harsh environments. Ensure proper mounting on a rigid base, adequate clearance for ventilation, and adherence to UL Listed installation practices for three-phase, 60 Hz systems.
The MD93E92 provides a 460 V primary and a 460Y/266 V secondary. It includes taps at +5% FCAN and -5% FCBN to accommodate supply variations and motor voltage requirements. This enables flexible matching to drive inputs and helps minimize voltage-related transients during startup and operation.
Yes. The transformer uses WS19 weather shield and a dry-type distribution design, enabling safer operation in outdoor or semi-exposed environments. While it is built for rugged industrial use, ensure proper enclosure, ventilation, and protection per local codes and UL Listed guidelines for outdoor installations.
With a 93 kVA rating, three-phase 60 Hz operation, and aluminum windings, the MD93E92 provides stable voltage, reduced transients, and reliable power delivery to motor drives. Its isolation transformer design improves power quality, protects drives from line disturbances, and supports efficient startup, contributing to higher uptime and reduced equipment wear.
The MD93E92 is UL Listed, confirming compliance with electrical safety standards. Warranty terms follow Eaton’s policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This supports procurement confidence and long-term maintenance planning in automation projects.