Eaton MD93E79ES Motor drive isolation transformer -150C rise
Part Number: MD93E79ES
Quick Summary
Eaton MD93E79ES provides isolation for motor-drive applications in industrial facilities. Facilities frequently contend with voltage transients, harmonics, and drive faults that reduce uptime and drive efficiency. Certification status is determined by the manufacturer; consult the Eaton datasheet for CE marking, IP ratings, and safety approvals. By combining isolation with ventilated cooling, this transformer helps stabilize feeds to drives and improve overall plant reliability. This 93 kVA solution supports scalable automation and reduces maintenance costs across mid-size drive fleets.
Product Information
Extended Description
MD93E79ES Eaton: Eaton Motor drive isolation ventilated transformer 93 KVA DRIVE ISOL 3PH 480 DELTA-480Y/277 150C RISE
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD93E79ES
UPC
786680134715
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
766 lb
Certifications
Contact Manufacturer
Type
Ventilated transformer
Feature: 93 kVA rating and three-phase 480V delta primary to 480Y/277V secondary. Benefit: Supports multiple drives on a single transformer, reducing utility tie-ins and voltage mismatch risks. Application: Ideal for automation lines with mixed drive loads and space-constrained electrical rooms. Feature: Ventilated cooling design. Benefit: Improves heat dissipation under heavy drive loading, increasing uptime and reducingFan-and-condensation related faults. Application: High-cycle conveyor systems and extrusion lines where continuous operation matters. Feature: Drive isolation to minimize transients and harmonics. Benefit: Protects VFDs and motors, extends equipment life, and lowers maintenance costs. Application: Critical process lines requiring stable DC bus voltage and reduced electrical noise. Feature: 150C rise rating. Benefit: Enhanced reliability in hot factory environments, enabling installation in spaces with limited cooling. Application: Manufacturing floors with tight ambient temperature controls or limited cooling capacity. Feature: 93 kVA capacity. Benefit: Scales across multiple drives, enabling future expansion without transformer replacement. Application: Growing machine shops and packaging lines seeking modular power conditioning.
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FAQs
Install with a proper three-phase 480V supply, using a delta primary to a 480Y/277V secondary. Ensure adequate ventilation and unobstructed airflow around the unit, following Eaton wiring diagrams. Provide appropriate short-circuit protection and grounding, mount on a sturdy base, and allow service clearance for air intake and exhaust. Verify ambient temperature and ensure compatibility with your drive system configuration.
The transformer isolates drives from mains transients and harmonic disturbances, reducing DC bus ripple and drive stress. This leads to smoother motor operation, higher drive efficiency, and longer motor life. The ventilated design enhances cooling under peak loads, which translates to reduced fault rates, lower maintenance frequency, and greater overall equipment availability in demanding automation environments.
Yes. The MD93E79ES is designed for 3-phase 480V service with a delta primary and a 480Y/277V secondary, rated at 93 kVA. It supports multiple drive devices on a single transformer, making it suitable for automation lines with mixed drive loads. Ensure correct phase configuration and verify installation space to accommodate ventilation needs and service access.
Certification status for the MD93E79ES is supplied by Eaton; consult the official datasheet and catalog materials for CE marking, IP ratings, and safety approvals. Confirm environmental compliance, lead-free materials, and country-specific approvals prior to procurement to ensure regulatory alignment with your facility.
By isolating drives and reducing transients, the MD93E79ES lowers downtime and extends motor life, contributing to higher equipment availability. Its 93 kVA capacity supports scalability and smoother power delivery, potential energy efficiency benefits from better drive control, and lower maintenance costs. While upfront costs exist, long-term reliability and reduced service interruptions typically yield favorable payback.