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Help CenterCompact Dry Type Transformer 30kVA for Power Transmission, 6.6kV Input, 380V Output
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As a professional manufacturer with extensive experience in electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. proudly presents our Compact Dry Type Transformer 30kVA. Designed for efficient and reliable power transmission, this transformer converts 6.6kV input to a stable 380V output, making it an ideal solution for various industrial and commercial applications. Our commitment to quality, backed by a robust management system, ensures that every unit delivers superior performance, safety, and longevity, providing our global clients with a trustworthy component for their power infrastructure.
This transformer is engineered with a focus on compact design, high efficiency, and minimal maintenance requirements. Unlike oil-filled transformers, the dry-type design eliminates the risk of oil leaks and fire hazards, making it safer for indoor installations and environmentally sensitive areas. The use of advanced cast resin technology provides excellent dielectric strength, thermal stability, and resistance to harsh environmental conditions such as moisture, dust, and corrosive atmospheres.
- Advanced Cast Resin Construction: The windings are vacuum-encapsulated with high-grade epoxy resin, ensuring superior insulation, mechanical protection, and excellent heat dissipation. This construction method prevents partial discharges and extends the operational life of the transformer.
- High Efficiency & Low Losses: Utilizing high-quality grain-oriented silicon steel cores and precision-wound copper or aluminum windings, our transformer achieves low no-load and load losses, contributing to significant energy savings over its lifetime.
- Compact & Space-Saving Design: The innovative design minimizes the footprint, making it perfect for installations where space is limited, such as in buildings, factories, substations, and renewable energy plants.
- Excellent Thermal Performance: The resin-encapsulated windings coupled with an optimized cooling duct design allow for efficient heat dissipation, enabling reliable operation even under high ambient temperatures or overload conditions for short durations.
- Robust Safety Features: Inherently flame-retardant and self-extinguishing properties of the cast resin make it a safe choice. It does not emit toxic gases or require special fire protection systems, simplifying installation and reducing overall project costs.
- Low Noise Operation: The solid encapsulation dampens vibration and electromagnetic hum, resulting in quiet operation, which is crucial for installations near offices, hospitals, or residential areas.
- Easy Installation & Maintenance: Being dry-type, it requires no oil monitoring, filtration, or containment systems. The lightweight design compared to oil-filled counterparts facilitates easier handling and installation.
Below is a summary of key technical specifications:
| Parameter | Specification |
| Rated Capacity | 30 kVA |
| Primary Voltage (High Voltage) | 6.6 kV (± 2 x 2.5% taps optional) |
| Secondary Voltage (Low Voltage) | 380 V (400V or other voltages available upon request) |
| Frequency | 50 Hz / 60 Hz (Customizable) |
| Vector Group | Dyn11, Yyn0, or others as required |
| Insulation Class | Class F (155°C) or Class H (180°C) |
| Temperature Rise | 100 K (for Class F) or 125 K (for Class H) |
| Impulse Withstand Voltage (LIWV) | 75 kV (HV side), 10 kV (LV side) per standards |
| Cooling Method | AN/AF (Air Natural / Air Forced) |
| Protection Degree (Enclosure) | IP20 (Standard indoor), IP23 or IP54 (Optional) |
| Noise Level | ≤ 55 dB(A) (at 1m distance under rated load) |
| Standards Compliance | IEC 60076-11, GB 1094.11, ANSI C57.12.01 |
| Terminations | HV & LV cable boxes with standard bushings |
The benefits for our clients are substantial. By choosing our compact dry-type transformer, you invest in a system that reduces operational costs through high efficiency and minimal maintenance. Its safety profile lowers insurance premiums and eliminates the need for complex fire suppression systems. The space-efficient design allows for flexible plant layout and can free up valuable real estate for other uses. Furthermore, its reliability ensures uninterrupted power supply, protecting sensitive downstream equipment and processes from voltage fluctuations.
Jinhua Dika Electrical Equipment Co., Ltd. stands behind this product with the solid foundation of a manufacturer that exports to a wide range of markets including North America, Southeast Asia, Europe, and Africa. Our annual export value reflects the trust of our international clientele. While we maintain a comprehensive quality management system, we focus on delivering tangible value: a robust, efficient, and safe transformer built to last. We encourage you to contact us to discuss how this 30kVA solution can be tailored to meet your specific project requirements, whether for a new installation, system upgrade, or expansion. Partner with us for a reliable power transmission component backed by manufacturing expertise.
Frequently Asked Questions (FAQ)
Q1: What are the main advantages of a dry-type transformer over an oil-filled one?
A: Dry-type transformers offer enhanced safety as they are non-flammable and eliminate the risk of oil leaks. They require less maintenance, have a smaller environmental footprint, and are suitable for indoor installations without special vaults.
Q2: Is this 30kVA transformer suitable for outdoor installation?
A: The standard model is designed for indoor use with an IP20 enclosure. For outdoor applications, we can provide units with higher ingress protection ratings like IP23 or IP54 upon request, which include weatherproof enclosures.
Q3: Can you customize the primary and secondary voltages?
A: Yes. While the standard model is 6.6kV/380V, we can manufacture transformers with other voltage ratios, such as 11kV/415V, 10kV/400V, etc., to match your specific grid requirements.
Q4: What is the typical delivery lead time for this product?
A: For standard specifications, the lead time is generally 4-6 weeks. Customized orders may require additional time, which we will confirm upon receipt of your detailed requirements.
Q5: Does the transformer come with temperature monitoring devices?
A: Standard units include basic temperature indicators. Optional features like PT100 sensors, thermal protection relays, and remote monitoring interfaces are available for enhanced condition monitoring.
Q6: What kind of warranty do you offer?
A: We provide a standard warranty against manufacturing defects. The specific terms and duration are detailed in our sales contract and are aligned with industry practices.
Q7: Are the windings made of copper or aluminum?
A: We offer both copper and aluminum winding options. Copper windings provide lower losses and higher efficiency, while aluminum is a cost-effective alternative. We can advise on the best choice based on your budget and performance needs.
Q8: What are the shipping and packaging details?
A: We export from major ports like Shanghai, Tianjin, Guangzhou, and Ningbo. Transformers are securely packed in wooden crates with desiccants and shock-absorbing materials to ensure safe ocean or land transport.
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