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US Electrification
Transformers - Dry Type Vented
General Purpose

General Purpose 3 Phase

ABB Low Voltage Dry Type transformers  are built to last and are designed with exclusive features.  With easy installation and all of the specifications you trust, it’s easy to see why ABB QL dry type transformers are preferred by contractors. Our Type QL transformers meet DOE 2016 efficiency standards. They are available with aluminum or copper windings and in all three temperature rise ratings. 


  • Built to last
  • Designed to reduce operating costs
  • Easy access for installation and service



  • Unique core and coil design using grain-oriented silicon steel
  • Core and coil assemblies mounted on rubber isolation pads
  • Single piece front/back
  • Outward-facing feet                                                                                                          
  • Lifting eyes provided in top clamp
  • Lug kit included up through 150kVA
  • Copper ground bar kit included up through 150kVA
  • Copper ground strap


Technical specifications

  • 15 – 1000kVA
  • NEMA 1 and/or 2 drip-proof enclosure
  • Rain shield available for field conversion to NEMA 3R
  • NEMA 3R stainless steel (Type 316) available through 150kVA



  • ANSI/NFPA 70: National Electrical Code
  • ANSI/IEEE C57.96: Distribution Transformers, Guide for Loading Dry Type appendix to ANSI C57.12 standards
  • IEEE C57.12.01: General Requirements for Dry Type Distribution Transformers
  • IEEE C57.12.91: Test Code for Dry Type Distribution Transformers
  • NEMA ST-20: Dry Type Transformers for General Applications
  • UL 1561: Dry Type General Purpose Power Transformer G. Efficiency level DOE 2016 by 10 CFR PART 431
  • CBC 2019, IBC 2019, ASCE7.05-2016: Seismic qualifications
  • ZXPC:EV519886: Energy Verification for US    



  • General purpose lighting and electrical installations
  • Motors
  • Resistance heating
  • Motor generators (without solid state drives)

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