Eaton MD34E92CU Motor drive isolation transformer - UL Listed
Part Number: MD34E92CU
Quick Summary
The Eaton motor drive isolation ventilated transformer drives clean, isolated power for three-phase motor systems. Industrial plants struggle with harmonics, overheating, and unplanned outages that throttle productivity. UL Listed certification confirms safety compliance for equipment installations and maintenance teams, reducing risk during service and startup. This solution supports uptime and power quality while integrating with existing low-voltage distribution and drives, offering compatibility with WS38 weather shield and DT-3 design. By delivering 34 kVA at 460 V primary and 460Y/266 V secondary, it helps engineers meet performance targets, stay within budget, and simplify maintenance through solid copper windings and a robust frame.
Product Information
Extended Description
MD34E92CU 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, 34 kVA, Cu windings, Frame: 912B, uses WS38
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD34E92CU
UPC
786685266923
Product Length/Depth
16.5 in
Product Height
30 in
Product Width
23 in
Product Weight
374 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
Copper
Design
DT-3
Frame
912B
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
34 kVA
Weathershield
WS38
Feature: Dry Type Distribution with DT-3 design provides quiet, ventilated operation that minimizes heat buildup in control rooms. Business Impact: Lower ambient temperatures for electrical rooms translate to improved equipment life and reduced cooling costs. Application: Ideal for plant-wide motor drive systems where noise and heat are critical constraints. Feature: 34 kVA three-phase rating at 60 Hz supports demanding drive loads with tight voltage stability. Business Impact: Enables reliable motor performance and consistent torque, reducing unplanned downtime. Application: Suitable for large conveyor lines and process motors in manufacturing facilities. Feature: Primary 460 V delta and secondary 460Y/266 V configuration offers flexible panel integration and control wiring. Business Impact: Simplifies electrical schematics and enables seamless integration with existing drive systems. Application: Common in retrofits and new builds with mixed-voltage drives. Feature: Tap changes (+5% FCAN and -5% FCBN) provide voltage regulation to accommodate supply fluctuations. Business Impact: Maintains stable motor performance and reduces nuisance tripping. Application: Critical in plants with variable incoming feeds or long cable runs. Feature: Copper windings, 912B frame, and WS38 weather shield deliver durability in harsh environments. Business Impact: Longer service intervals, easier maintenance, and better protection against corrosive effects. Application: Industrial environments with elevated humidity or dust exposure. Additional Note: UL Listed certification and Eaton warranty policy (one year from installation or 18 months from shipment) offer documented safety and support, boosting total cost of ownership advantages for OEMs and maintenance teams.
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FAQs
The MD34E92CU uses a three-phase 460 V primary (delta) with a 460Y/266 V secondary, designed for compatibility with common motor drives. Ensure panel space for the 912B frame, verify WS38 weather shield clearance, and use the +5% / -5% taps to compensate for supply variance. Follow the Eaton installation guidelines and UL Listed safety practices to avoid overloading and to maintain optimal cooling in ventilated enclosures.
Key specs include a 34 kVA rating at 60 Hz, three-phase operation, primary 460 V, secondary 460Y/266 V, copper windings, DT-3 design, 150°C rise, and WS38 weather shield. This combination supports stable voltage delivery to motor drives, improves power quality, and ensures reliable operation under industrial load conditions.
Yes. The MD34E92CU is designed as a drive isolation transformer for three-phase motor drives, with a ventilated dry-type construction and a WS38 shield option. Its 34 kVA rating and secondary 460Y/266 V output provide reliable isolation and voltage suitability for conveyor motors and similar loads in industrial environments.
The MD34E92CU is UL Listed, which confirms conformance with recognized safety standards for electrical equipment. This certification supports compliance during audits, reduces installation risk, and simplifies procurement for safety-conscious facilities and OEM integrators.
Copper windings and a ventilated, dry-type DT-3 design reduce overheating and insulation stress, extending service intervals and improving reliability. The WS38 weather shield provides added protection in harsher environments, while the 34 kVA rating supports predictable motor drive performance, contributing to lower maintenance costs and a favorable return on investment over the system life cycle.