Custom Transformer Solutions

Precision Engineering • 600V to 34.5kV Voltage Class • 100 VA to 2,500 kVA

Tailored Magnetic Power Solutions Built to Specification

At AFP Transformers Corp., we deliver custom-engineered transformer and magnetic solutions designed for mission-critical industrial applications ranging from 600 V to 34.5 kV voltage classes. With decades of manufacturing heritage resulting from the integration of Field Transformer, IsoReg, and International Transformers Incorporated (ITI), our Edison, New Jersey facility supplies global OEMs, system integrators, and industrial facility operators.

Our custom manufacturing capabilities cover power ratings from 100 VA up to 2,500 kVA and current ratings up to 10,000 Amps for specialized inductors and reactors. Every magnetic component is custom-configured in material selection, winding layout, core geometry, thermal class, and protective enclosure type to fulfill demanding electrical, thermal, and spatial specifications.

AFP Custom Transformer Engineering and Manufacturing Facility
KanBan & JIT Deliveries

Certified Quality & Rapid Production Fulfillment

AFP Transformers maintains standard production lead times of 3 to 6 weeks, with fast-track expedited programs delivering complete custom prototypes in as little as 1 week. We support global supply chains through structured KanBan stocking, blanket orders, and Just-In-Time (JIT) shipping programs that optimize procurement costs for volume OEMs.

Custom Transformer Manufacturing Capabilities

Our engineering team works directly with client engineers to resolve technical challenges, including severe harmonic distortion, tight impedance constraints, multi-frequency operating spectrums, and harsh environmental operating conditions.

Product Types
  • Autotransformers
  • Drive Isolation Transformers
  • Distribution Transformers
  • K-Factor Harmonic Transformers
  • Motor Starting Autotransformers
  • Multi-Pulse / Rectifier Transformers
  • Phase-Shifting Transformers
  • Scott-T & LeBlanc Transformers
  • Neutral Grounding Transformers
  • High & Low Impedance Units
  • Low Inrush Power Transformers
  • Load Bank & Filtering Reactors
Phase & Power Type Single Phase, Two Phase, Three Phase, and Complex Multi-Phase Phase-Shifting Configurations
Voltage Class 600 V Class • 5 kV Class • 15 kV Class • 34.5 kV Class
Power Rating Range 100 VA to 2,500 kVA (2.5 MVA)
Inductor & Reactor Rating Milliamp range up to 10,000 Amps continuous duty
Winding Configurations Wye Connected, Delta Connected, Open Delta, Double Wye with Interphase Transformer, Zig-Zag Grounding
Construction Styles
  • Standard Vacuum Pressure Impregnated (VPI) Dry Type
  • Epoxycast® Solid Cast Coil
  • Completely Encapsulated & Potted Units
Core Materials High-Grade Grain-Oriented Silicon Steel, Amorphous (Metglas®), Ferrite Cores, Powdered Metal, Air Core
Conductor / Winding Material OFHC Copper, Electrical Grade Aluminum, High-Temp Magnet Wire, Copper/Aluminum Foil Winding
Thermal Insulation Ratings Class B (130°C), Class F (155°C), Class H (180°C), Class N (200°C), Class R (220°C) with up to 150°C Temperature Rise
Enclosure Ratings & Options NEMA 1, NEMA 2, NEMA 3R, NEMA 4, NEMA 4X, NEMA 12, Non-Ventilated, Drip-Proof, Stainless Steel Enclosures, Custom Rain Shields
100% Quality Inspection & Testing

Every unit undergoes comprehensive routine and design verification testing logged in our digital quality archive:

  • Voltage Ratio & Phase Displacement
  • Winding Resistance & Excitation Current
  • No-Load & Full-Load Loss Measurement
  • Impedance & Efficiency Verification
  • HiPot Testing up to 100 kV AC RMS
  • Basic Impulse Level (BIL) Testing to 300 kV
  • Partial Discharge Testing (up to 100 kV applied / >70 kV induced potential)

Global Industry & Technical Standard Compliance

To ensure total reliability in international deployments, AFP Transformers manufactures in strict compliance with leading global engineering standards:

UL Standards UL 506 (Specialty Transformers), UL 508 (Industrial Control Equipment), UL 1561 (Dry-Type General Purpose 600V Class), UL 1562 (Medium Voltage Dry-Type up to 34.5 kV)
IEEE / ANSI Standards IEEE C57.12.01 (General Requirements for Dry-Type & Cast Coil Power Transformers), IEEE C57.12.91 (Test Code for Dry-Type Power Transformers)
NEMA Standards NEMA ST 20 (Dry-Type Transformers for General Applications), NEMA TR1 (Transformers, Regulators & Reactors), NEMA ICS 2 (Industrial Controllers & Motor Starting Autotransformers)
International Compliance IEC 60076 (Medium Voltage Power Transformers & Reactors), IEC 61558 (600V Class Power Transformers), CE Certification
Marine Certifications ABS (American Bureau of Shipping), DNV (Det Norske Veritas) marine-duty designs available

Key Industrial Applications & Equipment Integration

Our custom transformer designs serve critical electrical infrastructure across diverse global sectors:

  • Variable Frequency Drives (VFDs): Drive isolation and multi-pulse harmonic reduction transformers.
  • Data Center Power Distribution: K-Factor rated transformers and PDU sub-assemblies.
  • Industrial Heating & Processing: High-current furnace, induction heating, and microwave power supplies.
  • Utilities & Switchgear: Substation control power transformers (CPT) and grounding reactors.
  • Mining & Underground Duty: High-impact, heavy-duty encapsulated transformers for extreme environments.
  • Renewable Energy Systems: Step-up isolation units for solar, wind, and battery energy storage system (BESS) inverters.

Request Custom Transformer Engineering Consultation

Contact our application engineering team in Edison, NJ to submit your specifications, single-line diagrams, or custom OEM electrical parameters.

Send an Inquiry