GE type QL transformers meet DOE 2016 efficiency standards. They are available with aluminum or copper windings and utilize a UL recognized 220 deg C insulation system.

GE Noise Isolation Transformer, Type QL Dry Electrostatic Shield Standard Vented, Series: 9T, 480 VAC Primary, 400Y/231 VAC Secondary, 112.5 kVA Power, 60 Hz Frequency, 3 ph, Foot Mounting, NEMA 2 Enclosure, 150 deg C

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_9T51B0137_Catalog.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_9T51B0137_Catalog.pdf
• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_9T83B4000G17_Manual.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/GE_9T83B4000G17_Manual.pdf
• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_ae6a0fa83fe9e76335005ea9e2e25e7ed50569847dac52c181fcc6ccf9f35fdf.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_ae6a0fa83fe9e76335005ea9e2e25e7ed50569847dac52c181fcc6ccf9f35fdf.pdf

• Quiet performance
• Outward facing mounting feet
• Core and coil assemblies are mounted on rubber isolation pads to reduce noise
• Bolted coil terminations
• 1-piece front/back is easily removable for service
• NEMA 2 drip proof enclosure is standard
• Aluminum windings
• Copper ground strap
• Robust packaging with top and side protection protects against shipping damage
• Accessible mounting flanges with front/back slotted mounting holes make installation easier
• 100% factory tested for shorts and coil integrity, current and loss, voltage, impedance and noise
• Clear, comprehensive documentation and labeling