Specialty Magnetics

At AFP Transformers, we provide unique custom transformer solutions from fractions of a volt to 34.5 kV voltage class transformer applications. Our expertise covers a diverse range of industries and includes specialty designs for niche applications. These diverse applications cover:

  • Motor starting reactor and Open Delta motor starting transformer designs
  • Scott-T split phase or phase balancing transformers
  • Filament and plate transformers
  • Rectifier and Interphase transformers
  • Saturable core reactors
  • Ballast transformers
  • Low Voltage and Medium Voltage Control Transformers

Our customers touch nearly every industry and include utility companies, medical facilities, data centers, and multiple original equipment manufacturers. A variety of stock designs are readily available and our engineers can develop modified units for completely custom designs. Lead times average 3 to 6 weeks and are dependent on the specific transformer design and production volume. Expedited orders can be processed in as little as one week. We provide custom stocking programs for repeat orders and can use blanket orders to provide quantity pricing. For more information about our custom transformer solutions, see the table below, or Contact Us directly.

Specialty Magnetics Capabilities

Transformer Type
Autotransformers
Scott T Transformers
Grounding Transformer
High Impedance Transformers
Isolation Transformers
K Factor Transformers
LeBlanc Transformers
Low Impedance Transformers
Low Inrush Transformers
Motor Starting Transformers
Motor Starting Reactors
Neutral Grounding Transformers
ZigZag Phase-Shifting Transformers
Plate Transformers
Filament Transformers
Control Power Transformers
Pulse Transformers
  • 6 Pulse
  • 12 Pulse
  • 18 Pulse
  • 24 Pulse
  • Multi-Pulse
Traction Transformers
Vertical mounted Transformers
Power Type
Single Phase
Two Phase
Three Phase
Multi-Phase
Voltage Class
600 V
5 kV
15 kV
34.5 kV
Power Rating
100 VA to 2,500 kVA
Inductor Sizes
Milliamps to 10,000 Amps
Configurations
Open Delta
Delta Connected
Wye Connected
Double Wye with Interphase
Construction
Standard Dry Type
Cast Coil (Epoxycast®)
Encapsulated
Core Type
Air Core
Amorphous (Metglas®) Core
Powdered Metal Core
Silicon Steel Core
Ferrite
Winding Material
Copper
Aluminum
Winding Form
Magnetic Wire
Foil
Enclosure Types & Options
NEMA 1
NEMA 2
NEMA 3R
NEMA 4
NEMA 4X
NEMA 12
Drip Proof
Non-Ventilated
Totally Sealed
Stainless Steel
Indoor
Outdoor
Rain Shields
Custom
Insulation Thermal Rating
Up to 150°C Rise
Inspection
100% Product Testing
IEEE C57.12.91 Special, Standard, or Custom
Testing Parameters Stored
  • Voltage
  • Current
  • Watts
  • Vars
  • VA
  • Power Factor
  • Efficiency
Customer Specified Testing as Requested
Stocking Programs
Kanban
JIT Shipping
Min-Max
Custom
Production Volume
Prototype
Low Volume
High Volume
Lead Time
3 to 6 Weeks Typical
Expedited Turnaround in as little as 1 Weeks

Additional Information

Industry Focus & Applications
Switchgear Manufacturers
Motor Control Center Manufacturers
Custom OEM Builders
Utilities
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
NEMA ST 20
Standard for Dry Type Transformers for General Applications
NEMA TR1
Test Code for Transformers, Regulators & Reactors
NEMA ICS 2
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
ABS
American Bureau of Ships
DNV
Det Norske Veritas