Dry-type Step Down Transformer 480 to 380 Volt for 60Hz and 50Hz Systems
Product Spotlights
As a specialized manufacturer with over a decade of experience in electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. is proud to present our high-performance dry-type step down transformer, designed for reliable voltage conversion from 480V to 380V. Engineered to operate seamlessly on both 60Hz and 50Hz power systems, this transformer is a cornerstone solution for international projects and facilities requiring stable power supply adaptation. Our commitment to quality, backed by robust manufacturing processes and certifications, ensures you receive a durable and efficient component that integrates smoothly into your electrical infrastructure, reducing downtime and enhancing operational safety.
This dry-type transformer is engineered for superior performance and longevity. Unlike liquid-filled units, it uses high-grade insulating materials and air as the cooling medium, eliminating risks associated with leaks and fire hazards. This makes it an ideal choice for indoor installations, including commercial buildings, industrial plants, data centers, and manufacturing facilities where safety and environmental concerns are paramount. Its robust construction ensures stable operation under varying load conditions, providing a consistent 380V output from a 480V input.
Key Features & Technical Advantages:
- Dual Frequency Compatibility: Uniquely designed to function on both 60Hz (common in North America) and 50Hz (common in Europe, Asia, Africa) systems. This versatility simplifies inventory management for companies with global operations and supports equipment relocation between different regions.
- Enhanced Safety & Environmental Friendliness: As a dry-type transformer, it contains no flammable or toxic insulating oil. This significantly reduces fire risks and eliminates the need for containment systems, making it safer for personnel and the environment. It is also maintenance-friendly.
- High-Efficiency Design: Constructed with high-quality, low-loss amorphous or silicon steel cores and precision-wound copper or aluminum windings to minimize energy losses (core loss and load loss). This translates to lower operating costs and a reduced carbon footprint over the transformer's lifespan.
- Robust Construction & Thermal Management: Features Class F (155°C) or higher insulation systems. The winding design and ventilation channels promote excellent heat dissipation, ensuring reliable performance and extended service life even in demanding ambient conditions.
- Low Noise Operation: Advanced core design and secure construction techniques result in low sound levels, making it suitable for installations near offices or in noise-sensitive environments.
- Flexible Configuration Options: Available in various standard and custom kVA ratings to match your specific load requirements. Enclosure options (e.g., IP20 for indoor protection against solid objects, IP23 for outdoor/indoor use with limited moisture protection) can be specified to suit the installation environment.
Primary Benefits for Your Business:
- Operational Reliability: Ensures a stable and clean 380V power supply, protecting sensitive 380V equipment from voltage fluctuations and potential damage.
- Cost Savings: Lower lifetime costs due to minimal maintenance requirements (no oil testing/filtration), high energy efficiency reducing electricity bills, and no costs associated with oil disposal.
- Simplified Installation & Compliance: Lighter weight and compact design compared to oil-filled units often simplify installation logistics. The dry-type design often meets stricter indoor fire and building safety codes.
- Global Deployment Ready: The dual-frequency capability eliminates the need for separate transformer models for different regional power grids, streamlining your global supply chain and project planning.
Typical Technical Specifications:
The table below outlines common parameters. Specific ratings (kVA, impedance, etc.) are customizable.
| Parameter | Specification / Description |
|---|---|
| Type | Dry-type, Step Down, Isolation Transformer |
| Input Voltage (Primary) | 480V, 3-Phase |
| Output Voltage (Secondary) | 380V, 3-Phase |
| Frequency | 50Hz / 60Hz |
| Cooling | AN/AF (Air Natural / Air Forced options) |
| Insulation Class | Class F (155°C) typical, Class H available |
| Temperature Rise | 80°C, 100°C, 115°C, 150°C (customizable) |
| Impedance | Standard values as per design, customizable |
| Tapping | ±2x2.5% or ±5% off-load taps (optional) |
Frequently Asked Questions (FAQ):
-
Q: Can this transformer be used outdoors?
A: The standard unit is designed for indoor use. For outdoor installation, an appropriate enclosure rating (e.g., IP23 or higher) and protective finishes must be specified to shield against rain and environmental elements. -
Q: What is the typical delivery lead time for a standard model?
A> Lead times vary based on the kVA rating and customization. For standard specifications, typical production lead time is 4-6 weeks after order confirmation, excluding shipping. -
Q: Do you provide custom voltage ratios other than 480V to 380V?
A> Yes. As a manufacturer, we specialize in custom-designed transformers. We can produce units with various primary and secondary voltage combinations to meet specific project requirements. Please provide your detailed specifications for a quotation. -
Q: What are the main differences between copper and aluminum windings?
A> Copper windings generally offer higher conductivity, better efficiency, smaller physical size for the same rating, and superior mechanical strength. Aluminum windings are more cost-effective and lighter. The choice depends on your budget, efficiency goals, and space constraints. We can advise on the optimal material for your application. -
Q: How do I determine the correct kVA rating needed for my application?
A> The required kVA is calculated based on the total connected load (in kW or kVA) of all equipment to be powered, considering any future expansion and a suitable diversity factor. It's recommended to consult with an electrical engineer or provide us with your load details for our technical team to recommend the appropriate size. -
Q: What maintenance is required for a dry-type transformer?
A> Maintenance is minimal. It primarily involves regular visual inspections for dust accumulation, checking terminal connections for tightness, ensuring ventilation paths are clear, and periodic insulation resistance testing as per recommended schedules. No oil analysis or replacement is needed. -
Q: Are these transformers suitable for use with variable frequency drives (VFDs) or non-linear loads?
A> Standard units can handle typical loads. For applications with high harmonic content (like multiple VFDs), we recommend specifying a transformer designed with a K-factor rating or with appropriate de-rating to handle the additional heating caused by harmonics.
Jinhua Dika Electrical Equipment Co., Ltd. stands behind every transformer we produce. Our operations are guided by a comprehensive quality management system, and our products are trusted by clients across diverse markets including North America, Eastern Europe, Southeast Asia, and Africa. With an annual export value reflecting our global reach and a dedicated team of 11-50 professionals, we combine manufacturing expertise with a deep understanding of international power standards. Choosing our 480V to 380V dry-type transformer means investing in a component built for reliability, safety, and efficiency. Contact us today to discuss your project specifications, request a detailed quotation, or leverage our technical support to find the perfect power solution for your needs.
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