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Help Center15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Marine Applications
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As a dedicated manufacturer with over a decade of expertise in specialized electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. proudly presents our robust 15-40kVA Three-Phase Dry Type Isolation Transformer. Engineered specifically for the demanding marine environment, this transformer provides a critical and reliable solution for converting 660V power to standard 400V, 380V, or 220V three-phase systems onboard vessels and offshore platforms. Our commitment to quality, evidenced by our comprehensive management system certifications, ensures you receive a product built for longevity, safety, and peak performance in harsh conditions.
This transformer is designed to offer superior electrical isolation and voltage transformation, protecting sensitive marine equipment from power surges, harmonics, and ground loop issues. Its dry-type construction eliminates the risks associated with liquid coolants, making it safer and more environmentally friendly for marine applications.
Key Features & Technical Advantages:
- Marine-Grade Construction: Built with corrosion-resistant materials and treated components to withstand saltwater atmospheres, high humidity, and vibration.
- Enhanced Safety & Isolation: Provides complete galvanic isolation between primary and secondary circuits, crucial for protecting personnel and equipment from electrical faults.
- High Efficiency & Low Losses: Utilizes high-quality silicon steel cores and copper/aluminum windings to minimize energy loss and operational costs.
- Flexible Voltage Options: Configurable output voltages (400V, 380V, 220V) to match various international marine electrical system standards.
- Low Noise Operation: Advanced core design and secure construction ensure quiet performance, suitable for crew quarters and control rooms.
- Easy Maintenance & Installation: Dry-type design requires no oil checks or containment systems. Compact and robust enclosure allows for flexible mounting.
Detailed Technical Specifications:
| Parameter | Specification |
| Power Rating Range | 15 kVA, 20 kVA, 25 kVA, 30 kVA, 37.5 kVA, 40 kVA |
| Input Voltage (Primary) | 660V AC, 3-Phase, 50/60 Hz |
| Output Voltage (Secondary) | 400V / 380V / 220V AC, 3-Phase (Customizable) |
| Vector Group | Dyn11, Yyn0, or as required |
| Insulation Class | Class F (155°C) or Class H (180°C) standard |
| Cooling | AN (Air Natural) |
| Enclosure Protection (IP) | IP20 (Standard), IP23, IP44, IP54 available |
| Temperature Rise | ≤ 100K (Class F) / ≤ 125K (Class H) |
| Noise Level | |
| Standards | IEC 60076-11, Marine Application Guidelines |
Benefits for Your Marine Operations:
- Equipment Protection: Shields navigation, communication, and control systems from voltage fluctuations and transients.
- Compliance & Safety: Aids in meeting marine electrical safety regulations by providing proper voltage matching and isolation.
- Operational Reliability: Reduces downtime and maintenance needs with its rugged, maintenance-free design.
- Space Optimization: Dry-type design allows for installation in electrical rooms without special fire suppression requirements.
- Global Compatibility: Suitable for vessels operating in different regions with varying shore power or generator voltages.
Jinhua Dika Electrical serves a global clientele across continents, from North America and Europe to Southeast Asia and Africa. With an annual export value reflecting consistent international trust and a product portfolio backed by a rigorous quality management system, we stand as a reliable partner for your marine electrical needs. Our transformers are shipped worldwide from major Chinese ports, ensuring timely delivery. Choose our 15-40kVA Marine Isolation Transformer for a combination of robust engineering, maritime-specific design, and manufacturer-direct value. Contact us today to discuss your specific voltage and power requirements and receive a competitive quotation.
Frequently Asked Questions (FAQ)
Q1: What is the primary advantage of a dry-type transformer over an oil-filled one for marine use?
A: Dry-type transformers use air or solid insulation, eliminating the risk of oil leaks and fires. This is critically important for marine safety and environmental protection, and they require less complex installation (no containment pits).
Q2: Can this transformer handle the constant vibration on a ship?
A: Yes. Our marine transformers feature reinforced mechanical construction, including securely braced cores and windings, and vibration-dampening mounting options to ensure reliable operation in dynamic marine environments.
Q3: Is the output voltage fixed, or can it be customized?
A: While standard outputs are 400V, 380V, and 220V, we offer customization. You can specify the exact secondary voltage and vector group (e.g., Dyn11, Yyn0) during ordering to match your specific system layout.
Q4: What protection features are included?
A: Standard units include terminal covers for basic protection. Options include built-in thermal protection (thermostats), higher IP-rated enclosures for washdown areas, and tap changers for input voltage adjustment. Specific protection needs can be discussed.
Q5: How do I select the correct kVA rating for my application?
A: The required kVA depends on the total connected load. You need to sum the power requirements (in kVA or kW, considering power factor) of all equipment that will be powered by the transformer. We recommend a 20-30% safety margin. Our technical team can assist with this calculation.
Q6: What certifications support the quality of this product?
A: Our manufacturing process is governed by a certified quality management system. The transformers are designed and tested in accordance with international standards like IEC 60076. Specific marine society approvals (e.g., ABS, DNV, LR) can be pursued based on project requirements.
Q7: What is the typical lead time for an order?
A: Lead times vary based on the order quantity and customization level. For standard models in the 15-40kVA range, typical production lead time is 4-6 weeks ex-works. We provide accurate timelines with every quotation.
Q8: Do you provide technical support after installation?
A: Absolutely. We provide detailed installation manuals, wiring diagrams, and operational guidelines. Our engineering team is available for technical consultations before, during, and after installation to ensure optimal performance.
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