Motor Control Transformers & Magnetics

The motor control transformers and magnetics we manufacture at AFP Transformers are designed to serve the specific needs of the motor drive and motor control center industries. These products include a mix of standard and custom offerings such as motor starting autotransformers, 3-phase line reactors, and pulse transformers. Through our extensive experience in the transformer and power equipment industry, we have developed many innovative designs that fit a variety of motor applications. Additionally, our engineers are very adept at customizing designs for specialty applications. Transformers are available in 600 V to 34.5 kV voltage classes with copper or aluminum windings. All standard UL rated insulation systems up to 220°C and up to 150°C temperature ranges are available.

All products we produce are thoroughly tested according to national and international industry standards including IEEE, UL, IEC, and NEMA specifications. We operate dedicated testing equipment that records and stores current, voltage, power factor, and transformer efficiency results under specified operating conditions. In addition, we can perform specialized tests to customer specifications.

For additional information about our motor products, see the table below, or Contact Us directly.

Motor Control Transformers & Magnetics Capabilities

Transformer Type & Standard Products
Motor Starting Autotransformers
  • 3-Phase 3-Coil
  • 3-Phase 2-Coil
3-Phase Motor Starting Reactors
3-Phase Line Reactors
3-Phase Drive Isolation Transformers (DITs)
Multi-Pulse Transformers
  • 12-Pulse
  • 18-Pulse
Voltage Class
600 V
5 kV
15 kV
34.5 kV
Winding Material
Enclosure Types & Options
Insulation Thermal Rating
Up to 150°C Rise
UL Insulation Systems
All standards up to 220 °C
50 Hz
60 Hz
Testing & Inspection
100% Product Testing
IEEE C57.12.91 Special, Standard, or Custom
Testing Parameters Stored
  • Voltage
  • Current
  • Watts
  • Vars
  • VA
  • Power Factor
  • Efficiency
Applied Potential (HiPot) Testing to 100 kV AC RMS
BIL capability up to 300 kV
Partial Discharge Testing
  • Up to 100 kV applied potential
  • In excess of 70 kV induced potential
Customer Specified Testing as Requested
Stocking Programs
JIT Shipping
Production Volume
Low Volume
High Volume
Lead Time
3 to 6 Weeks Typical
Expedited Turnaround in as little as 1 Week

Additional Information

Industry Focus & Applications
Switchgear Manufacturers
Motor Control Center Manufacturers
Power Factor Correcting Equipment Manufacturers
Power Conditioning Equipment Manufacturers
  • PDU manufacturers
  • UPS manufacturers
  • Voltage Regulator Manufacturers
  • Data Center CPUs
Industrial Heating Equipment Manufacturers
  • Furnaces
  • Induction Heating Power Supplies
  • RF and Microwave Heating Machines
Mining Machine Manufacturers
Waste Water Treatment
OEM Machine Manufacturers
  • Machine Toolmakers
  • Packaging Machines
  • Semiconductor Machine Manufacturers
  • Web Processing Machine Manufacturers
Industry Standards
IEEE C57.12.01
General Requirements for Dry-Type Distribution & Power Transformers, Including Solid Cast
IEEE C57.12.91
Standard Test Code for Dry-Type Distribution & Power Transformers
UL 508
UL Standard for Industrial Control Equipment
UL 506
UL Standard for Specialty Transformers
UL 1561
Industry Standard for Dry Type General Purpose & Power Transformers, 600 Volt Class
UL 1562
Industry Standard for Dry Type General Purpose & Power Transformers, Medium Voltage, Up to 34.5 KV
Standard for Dry Type Transformers for General Applications
Test Code for Transformers, Regulators & Reactors
Industrial Standard for Controllers, Contactors, Overload Relays & Related Equipment. (Motor Starting Autotransformers & Reactors)
International Standards
IEC 60076
Power Transformer & Reactors - Medium Voltage
IEC 61558
Power Transformers & Reactors - 600 Volt Class
CE Certification to IEC Standards
Marine Standards
American Bureau of Ships
Det Norske Veritas