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Help Center220V to 380V Transformer for CNC Machine Power Supply 250 KVA
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As a specialized manufacturer of electrical equipment, Jinhua Dika is committed to delivering robust power solutions for industrial automation. Our 250 KVA transformer, designed for converting 220V to 380V, is engineered to provide a stable and reliable power source for your critical CNC machinery. We understand that consistent voltage is the lifeblood of precision manufacturing, and our product is built to ensure your operations run smoothly without interruptions caused by power inconsistencies. With years of experience serving a global clientele, we offer a transformer that combines core performance with the durability demanded in industrial environments.
This transformer is a cornerstone for facilities where the main power supply is 220V but CNC machines require a 380V input. It acts as a vital intermediary, stepping up the voltage to meet the specific needs of high-power CNC equipment, including milling machines, lathes, and machining centers.
- Precision Voltage Conversion: Ensures accurate 220V to 380V transformation, providing the exact voltage required by CNC machines to operate at optimal performance and protect sensitive electronic components from damage.
- High Efficiency & Low Losses: Constructed with high-grade silicon steel cores and copper/aluminum windings to maximize energy efficiency, reduce operational costs associated with heat generation (copper loss and iron loss), and promote a cooler running unit.
- Robust Construction for Industrial Use: Built to withstand the demanding conditions of workshops. Options include oil-immersed types for excellent cooling and insulation, or dry-type transformers which are fire-resistant and suitable for indoor installations with strict safety requirements.
- Enhanced Protection Features: Designed with multiple safeguards. These can include over-temperature protection, short-circuit protection, and surge protection to shield both the transformer and your valuable CNC equipment from electrical faults.
- Customizable Configuration: We offer flexibility to meet your specific site requirements. Choices include insulation class (e.g., Class H for high-temperature endurance), protection level (IP rating for dust and moisture), and installation type (indoor/outdoor).
- Quiet & Stable Operation: Engineered to minimize vibration and audible noise, contributing to a better working environment without compromising on power stability.
For your reference, here are some typical technical specifications. Please note that exact parameters can be customized based on your project needs.
| Parameter | Specification |
|---|---|
| Rated Capacity | 250 KVA |
| Primary Voltage | 220V (±5%) |
| Secondary Voltage | 380V |
| Frequency | 50Hz / 60Hz |
| Phase | 3-Phase |
| Vector Group | Dyn11, Yyn0, or others (available upon request) |
| Cooling Method | ONAN (Oil) / AN (Dry-type) |
| Temperature Rise | ≤ 65K (Oil) / ≤ 80K (Dry-type, Class F) |
By integrating this transformer into your power supply system, you directly benefit from reduced machine downtime due to voltage issues, extended lifespan of CNC equipment, improved machining accuracy from stable power, and overall lower long-term maintenance costs.
Jinhua Dika Electrical Equipment operates with a firm commitment to quality and reliability, supported by a structured management system. Our products are designed to meet the rigorous demands of international markets, including North America, Europe, and Southeast Asia. We invite you to leverage our manufacturing expertise to secure a power solution that safeguards your productivity. Contact us today to discuss your specific 220V to 380V power conversion needs and receive a tailored proposal.
Frequently Asked Questions (FAQ)
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Q: Is this transformer suitable for both new installations and retrofitting existing CNC setups?
A: Absolutely. This 250 KVA transformer is designed for versatility and can be integrated into new production lines or used to upgrade the power supply for existing CNC machines that require a 380V input. -
Q: What is the lead time for a standard 250 KVA unit?
A: Standard configuration units typically have a lead time of 15-25 working days. Lead times for customized specifications may vary and will be confirmed upon order confirmation. -
Q: Do you provide installation guidance or technical support?
A: Yes, we provide detailed installation manuals, wiring diagrams, and offer remote technical support. For complex projects, on-site installation supervision can be arranged as an optional service. -
Q: Can the transformer be customized for different input/output voltage combinations?
A: While this model is specified for 220V to 380V conversion, we manufacture a wide range of transformers. Custom voltage ratios, such as 240V to 400V, are available upon request. -
Q: What are the main differences between oil-immersed and dry-type transformers for this application?
A: Oil-immersed transformers are generally more efficient for high-capacity applications and have excellent cooling properties. Dry-type transformers are preferred for indoor installations due to their fire-resistant design and lower environmental concerns, as they use air or resin for insulation. -
Q: How do I determine if 250 KVA is the right capacity for my CNC machine?
A: The required KVA depends on the total power consumption of your CNC equipment. It is recommended to sum the rated power (in KW or KVA) of all machines to be connected and add a safety margin (e.g., 20-30%). Our technical team can assist you with this calculation. -
Q: What kind of warranty do you offer?
A: We offer a standard warranty period for our transformers. The specific terms and duration will be detailed in the sales contract and are based on the product model and application. -
Q: What shipping ports do you use, and what are the packaging standards?
A: We ship from major ports including Shanghai, Tianjin, Guangzhou, and Ningbo. Transformers are securely packaged in wooden crates with internal bracing and moisture-proofing to ensure safe arrival.
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