Cast Coil Power Transformers
Henka’s Cast Coil Power Transformers use vacuum-cast epoxy resin windings for enhanced durability in harsh environments. They resist moisture, pollutants, and short circuits while ensuring safe, efficient voltage step-down in industrial and utility applications.
Rugged, maintenance-free power solutions built to last and withstand extreme conditions.
Cast Coil Power Transformers
Henka’s Cast Coil Power Transformers use vacuum-cast epoxy resin windings for enhanced durability in harsh environments. They resist moisture, pollutants, and short circuits while ensuring safe, efficient voltage step-down in industrial and utility applications.
Rugged, maintenance-free power solutions built to last and withstand extreme conditions.
Technical Specifications
Tailor-Made Transformer Solutions
Henka’s Cast Coil Power Transformers offer single-phase (up to 5,000 kVA) and three-phase (up to 15,000 kVA) capacities with voltage ratings up to 46kV (250kV BIL). They feature air-cooled copper or aluminum windings, a 180°C insulation system, and a 115°C temperature rise (optional 80°C) while meeting North American energy standards. Designed for indoor (Type 1) or optional outdoor enclosures (Type 2, 3R, 4, 4X, 12), they comply with IEEE and CSA sound levels.
CSA-certified, UL-listed, and ISO 9001:2015 compliant, they undergo rigorous testing and offer optional features like forced air cooling, surge protection, seismic mounting, and insulated bus systems for reliable performance.
TypE:
Rating:
Capacity:
Cooling:
Frequency:
Fuse:
Resistor:
Capacitor:
Conductors:
Grounding:
Temp. Rise:
Impregnation:
Overload Capability:
Saturation Level:
Efficiency:
K-Factor:
Config:
Enclosure Type:
Enclosure Finish:
Loadcenter:
Primary Breaker:
Mounting:
Warranty:
Quality System:
Insulation System:
- 180°C
Testing:
Std Production Tests (per IEEE C57.12.91)
- Winding Resistance
- Turns Ratio
- Polarity and Phase Relation
- No-Load Loss and Excitation Current
- Load Loss & Impendance
- Applied Potential
- Induced Potential
- Partial Discharge
Optional Type Tests
- Basic Insulation Level (BIL)
- Temperature Rise (Heat Run)
- Sound Level
Other Optional Tests
- RIV
- Power Factor
Voltage Class:
- Up to 46kV (250kV BIL)
Secondary Voltage:
—
Taps:
- Typically +/-2 x 2.5% taps
Certifications:
- CSA Certified
- UL Listed
Reference Standards:
- CSA C22.2 No 47
- CSA C9
- IEEE C57.12.01
- IEEE C57.12.91
Optional Features & Accessories:
- Provision for Future Fans or Fan Packages (AFN) completely installed with or without Control Power
- Buss Co-ordination with primary and secondary switchgear (Unit-Substation configuration)
- Dial (Analog) or Digital Thermometers to monitor winding temperatures
- Neutral Ground Resistors (NGR) and Monitoring
- Anti-Condensation Strip Heaters
- Switching surge mitigating R.C. Snubber (with or without ground current monitoring)
- Ground Fault Protection Relays (GFR)
- Anti-Vibration mounting to reduce transformer hum (sound level)
- Provision for Seismic mounting or complete Seismic Snubbers and Restraints
- Distribution, Intermediate or Station Class Surge Arrestors
- Provision for Buss Duct Entry
- RC Snubber – Transient Voltage Mitigation
- Fully Insulated Buss
- Mimic Buss
- Kirk-Key Interlock
Contact us for a custom solution or explore our product range
Driving Success
with Henka Power
Reliable Transformers for Every Industry
At Henka, we believe power isn’t just about equipment — it’s about delivering solutions that fuel your success. Our commitment goes beyond manufacturing transformers; we provide dependable, efficient systems tailored to meet your project’s exact requirements. We start by understanding your specific needs, ensuring every detail is considered. Whether it’s a complex industrial setup or a commercial application, our team of experts guides you from consultation through delivery. With Henka, you gain more than just reliable transformers — you gain a partner dedicated to your long-term operational success.
Quality Support
Every Step of The Way
Professional Advice that You Can Count On
At Henka, our commitment doesn’t end with delivering high-quality transformers — it extends to providing exceptional customer support tailored to your needs. We understand that reliable power solutions require more than great products; they need responsive, knowledgeable assistance every step of the way. From the moment you reach out, our dedicated support team works closely with you to address your questions, solve challenges, and provide expert guidance. We’re here to ensure your operations run smoothly.
