Specialized Transformer Designs & Circuit Configurations
Industrial applications frequently require non-standard phase angles, specialized impedance parameters, or extreme current-handling capabilities. AFP manufactures a comprehensive range of custom specialty magnetic products:
Core Specialty Product Configurations
- Scott-T & Phase-Balancing Transformers: Efficiently convert 3-phase power into 2-phase isolated outputs or balance unbalanced single-phase loads across 3-phase utility supplies.
- Saturable Core & Variable Reactors: Voltage and current control devices engineered for precision induction heating, arc furnace controls, and heavy power conditioning circuits.
- Multi-Pulse Rectifier Transformers: 6, 12, 18, 24, and custom multi-pulse magnetic configurations for VFD motor drives and traction power rectifiers, eliminating harmonic distortion at the source.
- Motor Starting Autotransformers & Open Delta Assemblies: Step-down reduced voltage motor starting magnetics capable of handling extreme inrush thermal stress during industrial motor acceleration cycles.
- Plate, Filament & High-Voltage DC Transformers: Built for broadcast transmitters, semiconductor processing machinery, and high-frequency industrial RF power supplies.
- Low & Medium Voltage Control Power Transformers (CPTs): Rugged auxiliary control power supply transformers operating up to 34.5 kV primary insulation class.
Technical Capabilities & Manufacturing Specifications
Our Edison, New Jersey manufacturing facility operates under rigorous ISO quality control frameworks. Every unit undergoes 100% full electrical testing prior to dispatch, with complete data recording for voltage ratio, excitation current, total power loss, insulation resistance, and dielectric withstand strength.
Specialty Magnetics Engineering Matrix
Transformer & Reactor Types
Autotransformers, Scott-T, Grounding Transformers, High/Low Impedance Types, Isolation Transformers, K-Factor Rated, LeBlanc Winding, Low Inrush Designs, Motor Starting Autotransformers & Reactors, Neutral Grounding, ZigZag Phase-Shifting, Plate & Filament Transformers, Control Power Transformers, Pulse & Traction Magnetics.
Voltage & Power Ratings
- Voltage Class: 600 V, 5 kV, 15 kV, up to 34.5 kV Class.
- Power Rating: 100 VA up to 2,500 kVA (Custom engineering available above 2.5 MVA).
- Current Rating: Fractional Milliamps up to 10,000 Amperes.
- Phase Configurations: Single-Phase, Two-Phase, Three-Phase, and Multi-Phase (6/12/18/24 Pulse).
Construction & Core Materials
- Core Technologies: Grain-Oriented Silicon Steel, Amorphous Metal (Metglas®), Powdered Metal, Ferrite, and Air Core.
- Winding Construction: Precision Copper or High-Purity Aluminum Wire & Foil.
- Impregnation & Insulation: Standard VPI Dry-Type, Encapsulated, or Vacuum Pressure Epoxycast® Cast Coil. Thermal insulation rise up to 150°C.
Enclosure Options
NEMA 1, NEMA 2, NEMA 3R, NEMA 4, NEMA 4X Stainless Steel, NEMA 12, Non-Ventilated, Drip-Proof, Totally Enclosed (TEFC), Custom Indoor & Outdoor Housings.
Quality Testing & Standards
100% Routine Testing per IEEE C57.12.91. Parameters tracked include Voltage, Current, Loss (Watts), Vars, VA, Power Factor, and Total Efficiency. Certified standard or custom factory test reports provided.
OEM Supply Chain Programs
Kanban Stocking, Just-In-Time (JIT) Delivery, Min-Max Managed Inventory, Custom Blanket Order Schedules with Volume Tier Discounting. Expedited lead times as quick as 1 to 2 weeks.
Global Standards Compliance & Certifications
To support international engineering projects and system integrations, AFP specialty magnetics are designed, constructed, and tested to meet or exceed major global electrical codes and marine standard bodies:
Compliance Standards Breakdown
IEEE & ANSI Standards
IEEE C57.12.01 (Dry-Type & Cast Coil Requirements), IEEE C57.12.91 (Test Code for Power & Distribution Transformers).
UL Certifications
UL Recognized & UL Listed Markings Available. Compliant with UL 506 (Specialty Transformers), UL 508 (Industrial Control Equipment), UL 1561 (General Purpose 600V), UL 1562 (Medium Voltage up to 34.5 kV).
NEMA Standards
NEMA ST 20 (General Purpose Dry-Type), NEMA TR1 (Transformers, Regulators & Reactors), NEMA ICS 2 (Controllers & Motor Starting Reactors).
IEC & International
CE Certification compliant with IEC 60076 (Medium Voltage Power Transformers & Reactors) and IEC 61558 (600V Class Transformers).
Marine Certifications
American Bureau of Shipping (ABS) & Det Norske Veritas (DNV) design compliance for offshore marine and vessel duty.
