Heating & Furnace Transformers

At AFP Transformers, we produce a diverse array of transformers specifically designed for use in industrial heating and furnace applications. This includes multi-tap transformers which are capable of accounting for multiple power requirements; saturable reactors or SCR controlled primaries for use in variable output power applications; and Scott T transformers which are used to convert between phases. Low to medium voltage transformers are available in 600 V to 34.5 kV voltage classes with multiple enclosure options. All NEMA standard enclosures, including stainless steel, are available, along with a variety of closures design for specialty applications.

High frequency transformers with operating frequencies up to 25 kHz and impedance matching output transformers are available for use in induction heating applications. We have a large inventory of established design options which fit many applications. If a standard design is not well suited to the application, our engineering and design staff has a wealth of experience in developing custom transformers for specialty applications. Standard lead times average approximately 3 to 6 weeks with expedited service available. A myriad of stocking and inventory options are also available upon customer request. For additional information regarding our industrial heating and furnace transformers, see the table below, or Contact Us directly.

Heating & Furnace Transformers Capabilities

Transformer Type
Step Down Transformers
Multi-Tap Transformers
Scott T Transformers
Features & Options
SCR Controlled Primaries
Saturable Reactor Designs
High Frequency Voltage Conversion
Impedance Matching Output
Applications
Furnaces
Heating Elements
Variable Output Power
Induction Heating Systems
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
Frequency
Up to 25 kHz
Construction
Standard Dry Type
Cast Coil (Epoxycast®)
Winding Material
Copper
Aluminum
Magnet 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
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
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 Week

Additional Information

Industry Focus & Applications
Switchgear Manufacturers
Motor Control Center Manufacturers
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