Eaton MD330E92XCU Motor drive isolation transformer - UL
Part Number: MD330E92XCU
Quick Summary
Eaton MD330E92XCU motor drive isolation transformer provides clean, isolated power for motor drives in industrial automation. Voltage transients, EMI, and wiring noise in drives can trigger faults, downtime, and accelerated component wear. UL Listed safety certification ensures compliance and predictable performance in demanding plant environments. Designed as a dry-type DT-3, it supports three-phase motor drives with a 460 V primary and 460Y/266 V secondary, and it’s built for 150°C rise. With a 330 kVA rating and copper windings, this transformer delivers reliable power conditioning at scale, reducing maintenance and energy costs for OEMs and end users.
Product Information
Extended Description
MD330E92XCU Eaton: Dry Type Distribution Motor Drive Isolation Transformer DT-3 Three-phase 460 DELTA 1 at +5% FCAN 1 at -5% FCBN 460Y/266V 150°C 330 kVA Copper windings 919E 318E WS35 50/60 Hz 300 hp
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD330E92XCU
UPC
786680111068
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
0.001 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
919E
Tap size
1 at +5% FCAN, 1 at -5% FCBN
Type
Dry Type Distribution Motor Drive Isolation Transformer
Wiring connection
318E
Frequency rating
50-60 Hz
Kva Rating
330 kVA
Phase
Three-phase
Primary voltage
460 V
Secondary Voltage
460Y/266 V
Temperature rise
150 °C rise
Weathershield
WS35
Dry-type distribution motor drive isolation transformer offers improved safety and reduced fire hazard compared with oil-filled equivalents. The copper-wound DT-3 design delivers clean, isolated power to drive systems, improving protection for sensitive electronic controls. This configuration is ideal for installation inside control panels and machine enclosures where space and ventilation are critical. 3-phase transformer with a 460 V primary and 460Y/266 V secondary provides seamless compatibility with common industrial power distribution and motor drive inputs. The unit minimizes the need for additional step-down equipment, simplifying wiring and uptime. It supports VFDs and servo drives in CNCs and packaging lines. Copper windings rated for 150°C rise and a 330 kVA capacity ensure robust performance under heavy start-up and fluctuating loads. The thermal design supports sustained current and short-term overloads without overheating, reducing maintenance cycles. This aligns with uptime targets for manufacturing and processing facilities. Tap changer offers 1 at +5% FCAN and 1 at -5% FCBN, enabling precise voltage regulation to accommodate supply variability. This improves motor performance, reduces harmonics, and protects sensitive loads. The ability to tailor voltage on-site simplifies commissioning across multiple lines. Physical attributes such as WS35 weathershield, DT-3 frame 919E, and wiring connection 318E support rugged installation and fast integration with Eaton-approved components. Durable construction facilitates indoor and outdoor installations in moderate environments and simplifies replacement parts logistics. This compatibility helps shorten project timelines and lowers lifecycle costs. UL Listed certification and Eaton warranty provide procurement confidence and risk mitigation. The one-year warranty from installation or 18 months from shipment protects against early failures. These assurances support long-term reliability in plant operations and align with maintenance strategies and compliance programs.
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FAQs
Install the DT-3 dry-type transformer inside a suitable enclosure with adequate ventilation and clearance. Connect the 460 V primary in delta and the 460Y/266 V secondary per the nameplate, using UL-listed wiring practices. Verify proper grounding, correct fusing for a 3-phase supply, and engage the 1 at +5% FCAN and 1 at -5% FCBN taps as needed during commissioning.
The unit is a three-phase, 330 kVA transformer with a 460 V primary and a 460Y/266 V secondary. It operates at 50–60 Hz, features copper windings, a 150 °C rise, and a dry-type DT-3 design with frame 919E and wiring connection 318E. Weathershield WS35 aids protection in harsh environments.
Yes. It provides isolation to protect VFDs and motors from line transients and harmonics, improving drive life and system reliability. Its 460 V to 460Y/266 V configuration aligns with standard motor drive inputs, and the 330 kVA rating supports sizable drive loads in automation panels and packaging lines.
The transformer is UL Listed, ensuring compliance with safety standards for industrial equipment. It is covered by Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first, offering coverage against early-life failures and supporting maintenance planning.
Because it is a dry-type transformer with copper windings, routine inspection of terminations, cooling pathways, and enclosure cleanliness is essential. Keep the WS35 shield and surrounding area free of dust and moisture, monitor for unusual temperature rise, and verify tap settings during voltage variances to maintain optimal performance and longevity.