Eaton MD770E92 Motor drive isolation transformer UL Listed
Part Number: MD770E92
Quick Summary
Eaton MD770E92 motor drive isolation transformer delivers clean, reliable power for drive systems in industrial facilities. This solution reduces downtime and equipment wear by isolating voltage spikes and harmonics that commonly affect modern motor drives. UL Listed safety certification ensures electrical-installation compliance, while the DT-3 drive isolation design and ventilated enclosure support robust performance in demanding environments. With aluminum windings and a 770 kVA rating, it enables scalable power for three-phase systems and improves overall energy efficiency and system longevity in production lines. Its 460 V primary and 460Y/266 V secondary outputs match common OEM drive requirements, helping simplify procurement and installation.
Product Information
Extended Description
MD770E92 Eaton: 770 kVA Rating; 3-Phase; DT-3 Drive Isolation Transformer; Ventilated; 460; 460Y/266; 150 Degree C; Aluminum Windings
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD770E92
UPC
786680337451
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
2900 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
920
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
770 kVA
Weathershield
WS35
Feature: 770 kVA three-phase rating with 460 V input and 460Y/266 V output. Business impact: supports high-demand motor drives with margin for surge events, improving production throughput and reducing the need for multiple transformers. Application: assembly lines, conveyors, and presses requiring robust power isolation. Feature: DT-3 drive isolation design in a ventilated enclosure. Business impact: minimizes thermal stress on sensitive drive electronics and lowers maintenance costs by improving cooling and reliability. Application: variable-frequency drives in automated plants. Feature: Aluminum windings and solid frame construction (Frame 920). Business impact: durable, corrosion-resistant components with long service life and predictable performance in harsh plant environments. Application: heavy-industrial floors with frequent cleaning and dust exposure. Feature: Tap size ±5% (FCAN/FCBN). Business impact: easier voltage compensation for supply variances, reducing the risk of undervoltage or overvoltage on drives. Application: facilities with fluctuating mains. Feature: Weathershield WS35 option and ventilated design. Business impact: enables outdoor or semi-exposed installations without compromising performance. Application: outdoor equipment rooms, controlled environments near production floors. Feature: Comprehensive safety and compliance posture (UL Listed). Business impact: simplifies procurement and commissioning with recognized safety certification. Application: standard electrical installations in manufacturing and processing facilities. Feature: Storage footprint and weight (36.23 in L x 75 in H x 44.2 in W; 2900 lb). Business impact: planning for rigging, shipping, and floor space during plant upgrades. Application: retrofit projects and new line builds with limited installation room.
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FAQs
The MD770E92 is a three-phase transformer with a primary voltage of 460 V and a secondary voltage of 460Y/266 V, designed for 60 Hz operation. The plus/minus 5% tap settings (FCAN/FCBN) help compensate for supply fluctuations, ensuring stable drive performance.
Yes. The unit is a dry-type drive isolation transformer designed to protect motor drives from voltage transients and harmonics. Benefits include extended drive life, reduced downtime, improved power quality for VFDs, and safer operation in demanding industrial environments.
Plan for a footprint of 36.23 in (L) x 75 in (H) x 44.2 in (W) and a weight of approximately 2900 lb. Rigging and a sturdy floor are required. The WS35 Weathershield option supports outdoor or harsher environments, and the ventilated design aids cooling for continuous operation.
The MD770E92 carries UL Listed certification, indicating compliance with recognized electrical safety standards. This simplifies procurement and installation by aligning with widely accepted safety criteria for industrial equipment.
Eaton provides a warranty of one year from installation or eighteen months from shipment, whichever occurs first. This coverage supports ongoing reliability and helps protect total cost of ownership during plant upgrades or expansions.