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As a professional manufacturer, Jinhua Dika Electrical Equipment Co., Ltd. specializes in providing reliable and efficient power solutions. Our Cast Resin Transformer series, including the 800kVA and 1000kVA three-phase medium voltage models, is engineered for superior performance and safety in demanding environments. Designed with a focus on durability and low maintenance, these transformers are ideal for critical applications where fire safety and environmental concerns are paramount. We ensure every unit is backed by comprehensive documentation, including a detailed Mill Test Report, guaranteeing transparency and quality from production to delivery.
The core of our product lies in its advanced cast resin technology. This design encapsulates the windings in a solid epoxy resin under vacuum, providing exceptional protection against moisture, dust, and corrosive atmospheres. Unlike oil-filled transformers, our dry-type models are inherently flame-retardant and self-extinguishing, making them perfectly safe for installation indoors, in populated areas, or in facilities with strict fire safety regulations. This eliminates the risk of oil leaks and the associated environmental hazards and cleanup costs.
Key Features & Technical Advantages:
- Enhanced Safety & Environmental Friendliness: Non-flammable, no toxic gases, zero risk of oil leakage. Perfect for hospitals, schools, high-rise buildings, and underground substations.
- High Mechanical & Dielectric Strength: The cast resin provides robust mechanical protection and excellent resistance to short-circuit forces, ensuring long-term structural integrity.
- Low Maintenance & High Reliability: Requires no periodic oil testing or filtration. The sealed design resists humidity and contamination, leading to reduced lifecycle costs.
- Excellent Thermal Performance: Class F or Class H insulation systems allow for higher temperature rises, enabling compact designs and efficient operation under load.
- Low Noise Level: Advanced design and construction techniques result in lower operational noise, suitable for noise-sensitive environments.
- Flexible Configuration: Available with various protection levels (IP ratings), cooling methods (AN/AF), and tap changers to meet specific project requirements.
Technical Specifications Overview (Typical):
| Parameter | 800kVA Model | 1000kVA Model |
| Rated Power | 800 kVA | 1000 kVA |
| Phases | Three | Three |
| Frequency | 50/60 Hz | 50/60 Hz |
| Primary Voltage (HV) | Up to 35 kV (Customizable) | Up to 35 kV (Customizable) |
| Secondary Voltage (LV) | 400V, 480V, etc. | 400V, 480V, etc. |
| Vector Group | Dyn11, Yyn0, etc. | Dyn11, Yyn0, etc. |
| Insulation Class | Class F (155°C) / Class H (180°C) | Class F (155°C) / Class H (180°C) |
| Cooling | AN/AF | AN/AF |
For our clients, the benefits are clear. You gain a power distribution component that prioritizes safety, reducing insurance premiums and compliance risks. You achieve operational savings through minimal maintenance and high energy efficiency. Furthermore, the design flexibility allows for installation in space-constrained or environmentally sensitive locations that are off-limits to liquid-filled transformers. The provided Mill Test Report offers full traceability of materials and manufacturing tests, giving you confidence in the product's quality and performance specifications.
Frequently Asked Questions (FAQ):
-
Q: What is a Mill Test Report, and why is it important?
A: A Mill Test Report (MTR) is a certified document from the material manufacturer that provides the chemical and physical properties of the raw materials (like copper and epoxy resin) used in the transformer. It's crucial for quality assurance, traceability, and compliance with project specifications. -
Q: Can this transformer be used outdoors?
A: Yes, but it requires an appropriate enclosure or a higher IP protection rating (like IP54) to shield it from direct rain and sunlight. Standard models are typically for indoor use. Outdoor configurations are available upon request. -
Q: How does the noise level compare to oil-filled transformers?
A: Cast resin transformers generally operate at lower noise levels. Specific noise levels depend on the design and rating but are often 5-10 dB lower than equivalent oil-filled units, making them suitable for urban and residential areas. -
Q: What is the expected lifespan of this transformer?
A: With proper installation and in normal operating conditions, a cast resin transformer can have a service life exceeding 30 years. The lack of aging oil and the robust insulation system contribute to its longevity. -
Q: Are these transformers customizable for different voltage ratings?
A: Absolutely. While standard models cover common medium voltage ranges (e.g., 10kV, 20kV, 35kV), we can customize the primary and secondary voltage ratings, vector group, and tap settings to match your specific grid requirements. -
Q: What maintenance is required?
A: Maintenance is minimal. It primarily involves periodic visual inspections, cleaning of cooling ducts to ensure proper airflow, and checking electrical connections. There is no need for oil sampling, analysis, or replacement. -
Q: Do you offer after-sales support and technical documentation?
A: Yes. We provide comprehensive documentation including wiring diagrams, test reports, and operation manuals. Technical support is available for installation guidance and operational queries. -
Q: What are the main application areas for these transformers?
A: They are widely used in commercial complexes, hospitals, data centers, industrial plants, mining operations, offshore platforms, renewable energy plants (solar/wind), and any location where fire safety, environmental protection, and reliability are critical.
Trust in Jinhua Dika Electrical Equipment is built on a foundation of quality and global experience. Our adherence to recognized management standards, such as ISO 9001 for quality and ISO 14000 for environmental management, is reflected in every transformer we produce. With an annual export value demonstrating our international reach across markets from North America and Europe to Southeast Asia and Africa, we understand diverse grid requirements. Supported by a dedicated team and flexible shipment options from major Chinese ports, we are positioned to be your reliable partner for medium voltage power solutions. Choose our Cast Resin Transformer for a blend of safety, efficiency, and proven reliability that protects your investment and powers your operations with confidence.
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