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Help Center10kW 20kW 220V to 380V 440V Three Phase Power Transformer With Toroidal Coil Design
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As a dedicated manufacturer of electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. specializes in providing robust and efficient power solutions for industrial applications worldwide. Our 10kW and 20kW Three Phase Power Transformers with Toroidal Coil Design are engineered to bridge the gap between single-phase and three-phase power systems reliably. These transformers are a critical component for businesses operating machinery that requires 380V or 440V three-phase power but only has access to a standard 220V single-phase supply. With a focus on quality and performance, we design our products to ensure seamless power conversion, minimal energy loss, and long-term operational stability in demanding environments.
The core of our transformer's superior performance lies in its advanced toroidal coil design. Unlike traditional laminated E-I core transformers, the toroidal shape offers significant advantages:
- Higher Efficiency: The continuous grain-oriented silicon steel core and precise winding reduce magnetic flux leakage and core losses, leading to efficiency levels that can be notably higher than conventional designs.
- Lower Audible Noise: The symmetrical toroid core minimizes magnetostriction, resulting in a much quieter operation, which is ideal for noise-sensitive workplaces.
- Compact and Lightweight: The efficient use of materials makes toroidal transformers smaller and lighter for the same power rating, saving valuable panel space and simplifying installation.
- Reduced Electromagnetic Interference (EMI): The closed magnetic path significantly contains the magnetic field, reducing stray EMI that can interfere with sensitive electronic equipment nearby.
- Excellent Thermal Performance: The shape allows for even heat distribution across the entire surface, improving cooling and enhancing long-term reliability.
These transformers are specifically designed for single-phase to three-phase conversion, making them indispensable for workshops, small factories, and facilities that need to power three-phase motors, CNC machines, industrial ovens, or pumps from a standard single-phase grid. They provide a stable and balanced three-phase output, protecting your expensive equipment from phase imbalance issues.
Technical Specifications & Configuration Options:
| Model Reference | DT-10KVA | DT-20KVA |
| Rated Power | 10 kVA / 10 kW | 20 kVA / 20 kW |
| Primary Voltage (Input) | 220V AC, Single Phase, 50/60Hz | |
| Secondary Voltage (Output) | 380V AC or 440V AC, Three Phase, 50/60Hz (Selectable) | |
| Connection Type | Primary: Single Phase; Secondary: Three Phase (Star/Y Connection common) | |
| Insulation Class | Class F (155°C) standard, Class H (180°C) available upon request | |
| Cooling | AN (Air Natural) | |
| Enclosure | Open Frame (Chassis Mount) or Protective Enclosure (IP20/IP23 optional) | |
Key Advantages for Your Business:
- Operational Cost Savings: Higher efficiency translates directly to lower electricity bills over the transformer's lifespan, offering a strong return on investment.
- Equipment Protection: Delivers a clean, stable three-phase output, preventing damage to motors and drives caused by voltage fluctuations or phase loss.
- Space Optimization: The compact toroidal design allows for installation in tighter control panels or equipment cabinets.
- Enhanced Workplace Environment: Low noise operation contributes to a better working environment, complying with occupational health considerations.
- Reliability & Longevity: Built with high-quality copper windings and premium core materials, these transformers are designed for continuous duty in industrial settings, minimizing downtime.
- Flexibility: Output voltage can often be tapped for 380V or 440V, and custom input/output voltage combinations are possible for specific project needs.
Trust in a product backed by a manufacturer with a global footprint. Jinhua Dika Electrical Equipment Co., Ltd. exports to key markets across North America, Europe, Southeast Asia, and beyond, demonstrating our capability to meet diverse international requirements. Our commitment to systematic management is reflected in our adherence to recognized quality frameworks. With flexible shipping options from major Chinese ports like Shanghai, Tianjin, and Ningbo, we ensure reliable and timely delivery to support your project timelines. Choose our toroidal three-phase transformers for a power conversion solution that combines innovative design with manufacturing expertise, ensuring your machinery receives the stable, high-quality power it needs to perform at its best. Contact us today to discuss your specific power requirements or to request a detailed quotation.
Frequently Asked Questions (FAQ):
-
Q: Can this transformer be used for both 50Hz and 60Hz power systems?
A: Yes, our transformers are typically designed to operate on both 50Hz and 60Hz frequencies. Please confirm the specific frequency requirement when placing your order. -
Q: What is the main difference between a toroidal transformer and a standard laminated core transformer?
A: The toroidal design uses a donut-shaped core, which offers higher efficiency, lower noise, less electromagnetic interference, and a more compact size compared to the traditional stacked laminated (E-I) core design. -
Q: Do I need any additional equipment, like a variable frequency drive (VFD), to use this transformer with a three-phase motor?
A: This transformer provides a fixed-frequency three-phase output. To control the motor speed, you would still require a VFD. The transformer's role is to create the three-phase power supply for the motor/VFD system from a single-phase source. -
Q: How do I determine if I need the 10kW or 20kW model?
A: You need to calculate the total power consumption (in kW or kVA) of all the equipment you plan to connect. It is recommended to choose a transformer with a power rating at least 20-30% higher than your calculated load to handle inrush currents and provide a safety margin. -
Q: What kind of protection features are included?
A: Standard units are open-frame. For basic protection, an enclosure (e.g., IP20 for touch protection, IP23 for limited moisture ingress) can be provided. For comprehensive electrical protection like overload or short-circuit, external circuit breakers or fuses must be installed in your system. -
Q: Are the terminals clearly marked for easy wiring?
A: Yes, all input (primary) and output (secondary) terminals are clearly labeled according to standard electrical conventions (e.g., L, N for input; U, V, W, N for output), and a wiring diagram is supplied with the unit. -
Q: Can you provide transformers with different input/output voltage specifications?
A: Absolutely. As a manufacturer, we offer customization. We can produce transformers for various single-phase or three-phase input voltages and output voltages based on your regional standards or specific machine requirements. -
Q: What is the typical lead time for an order?
A: Lead time varies based on order quantity and customization. Standard models may have shorter lead times, while custom specifications require additional engineering and production time. Please inquire for an accurate estimate.
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