Castblock® Transformers
The EpoxyBlock® transformers we offer at AFP Transformers provide several advantages to traditional dry type transformers. Instead of using vacuum pressure impregnation to apply resin to all the transformer coils, both the primary and secondary coils are directly cast in a mold under a vacuum. As a result, the coils are completely embedded in an epoxy material. This protects coils from contaminates and holds the windings in place during power surges. This makes them a good choice for difficult environments such as chemical plants, oil refineries, water treatment, and mine duty applications.
The tough epoxy material is essentially maintenance free and since EpoxyBlock® is still considered a dry type transformer, there are no hazardous liquids to pose a safety or environmental risk. Since they do not contain hazardous materials, EpoxyBlock® transformers do not require transformer vaults or a liquid containment area that limit placement options and significantly add to the cost of liquid filled transformers.
We manufacture a wide range of EpoxyBlock® transformers from 600V to 5 kV voltage classes. Some of the most common applications for EpoxyBlock® transformers include control power transformers, pad-mount distribution transformers, and neutral grounding transformers used in utility and cubicle applications.
For additional information about our line of standard and custom EpoxyBlock® transformers, see the table below, or Contact Us directly.
CastBlock® Transformers Capabilities
- Transformer Type
- Control Power Transformers
- Neutral Grounding Transformers
- Distribution Transformers
- Power Transformers
- ZigZag Transformers
- Features
- Non-flammable
- Superior Short Circuit Resistance
- Low/No Maintenance Required
- Leak Proof
- No Hazardous Materials
- Power Type
- Single Phase
- Three Phase
- Voltage Class
- 600 V
- 5 kV
- Construction
Cast Coil (Epoxycast®)
- Winding Material
- Copper Wire Standard
- Additional Configurations on Request
- BIL Rating
60kV to 170kV
Dependent on Transformer Voltage Rating
- 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 1.5 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 StandardsMarine Standards
ABS
American Bureau of Ships
DNV
Det Norske Veritas