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Help Center15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Technical Support
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As a leading manufacturer, Jinhua Dika Electrical Equipment Co., Ltd. specializes in providing robust and reliable power solutions for industrial applications worldwide. Our 15-40kVA Three-Phase Dry Type Isolation Transformer is engineered to deliver stable and safe voltage conversion from 660V down to 400V, 380V, or 220V, ensuring your sensitive equipment operates within optimal parameters. With over a decade of experience and a commitment to quality, we design these transformers to meet the rigorous demands of modern industry, offering enhanced electrical isolation, reduced harmonic distortion, and superior protection against power anomalies. Backed by comprehensive technical support, we ensure seamless integration and long-term performance for your critical operations.
This transformer series is built with precision and durability at its core. The dry-type construction eliminates fire and environmental hazards associated with liquid-filled units, making it ideal for indoor installations in factories, data centers, commercial buildings, and renewable energy systems. Key features include:
- High-Efficiency Design: Minimizes energy losses, leading to lower operational costs and a reduced carbon footprint over the transformer's lifespan.
- Superior Isolation: Provides complete galvanic isolation between primary and secondary windings, protecting downstream equipment from voltage spikes, surges, and ground loop issues.
- Robust Construction: Utilizes high-grade silicon steel cores and Class H (or higher) insulation materials, ensuring reliable performance even in demanding ambient temperatures up to 180°C.
- Low Noise Operation: Advanced core design and secure mechanical construction result in quiet performance, suitable for noise-sensitive environments.
- Flexible Configuration: Available in various tap settings and connection groups (e.g., Dyn11, Yyn0) to match specific grid requirements and load characteristics.
- Easy Maintenance: The dry-type design requires no oil monitoring or containment, simplifying inspection and reducing lifetime maintenance costs.
Our technical team provides end-to-end support, from system design and specification review to installation guidance and troubleshooting, ensuring you get the most out of your investment.
Below is a summary of key technical specifications for the standard models within this range:
| Parameter | Specification |
|---|---|
| Rated Capacity Range | 15 kVA, 20 kVA, 25 kVA, 30 kVA, 40 kVA |
| Frequency | 50 Hz / 60 Hz (customizable) |
| Insulation Resistance | > 100 MΩ at 500V DC |
| Temperature Rise | |
| Noise Level | |
| Impulse Voltage Withstand | Complies with relevant IEC standards |
| Terminals | Copper busbars or cable lugs, accessible for connection |
| Enclosure Protection | Standard IP20 (IP23 optional) |
The primary advantage of choosing our isolation transformer is the significant enhancement in power quality and system safety. It acts as a buffer, isolating your valuable machinery from the main power supply. This isolation mitigates the risk of equipment damage caused by:
- Transient Voltage Surges: Common in industrial areas with heavy machinery starts/stops.
- Harmonic Distortion: Generated by non-linear loads like variable frequency drives (VFDs) and rectifiers.
- Ground Faults and Neutral Shifts: Which can cause unbalanced voltages and equipment malfunction.
By providing a clean, stable, and isolated power source, our transformer extends the operational life of connected equipment, reduces downtime, and improves overall system reliability. For specialized applications, we offer customization options including different voltage ratios, special enclosures (e.g., stainless steel for corrosive environments), and integrated monitoring systems.
Jinhua Dika Electrical is a trusted partner for businesses across the globe, from North America and Western Europe to Southeast Asia and Africa. Our annual export value of US$1-1.5 Million and adherence to a comprehensive suite of management system standards, including ISO9001 for quality and OHSAS18001 for occupational health and safety, underscore our commitment to excellence and reliability. With a dedicated team of 11-50 professionals and major shipping ports like Shanghai, Tianjin, Guangzhou, and Ningbo at our disposal, we ensure timely delivery and consistent product quality. When you choose our 15-40kVA Three-Phase Dry Type Isolation Transformer, you are not just purchasing a component; you are investing in a safer, more efficient, and more resilient power infrastructure supported by a manufacturer with a proven track record. Contact us today to discuss your specific requirements and receive expert technical support for your project.
Frequently Asked Questions (FAQ)
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Q: What is the main purpose of this isolation transformer?
A: Its primary function is to provide galvanic isolation between the 660V input and the lower voltage output (400V/380V/220V). This protects sensitive equipment from electrical noise, surges, and ground faults present on the primary supply, ensuring cleaner and safer power. -
Q: Can this transformer be used outdoors?
A: The standard enclosure has a protection rating of IP20, designed for indoor, dry environments. For outdoor or damp locations, an IP23 or higher-rated enclosure is available as an option. Please specify your installation environment when inquiring. -
Q: What are the delivery lead times for standard models?
A: For standard specifications within the 15-40kVA range, typical lead time is 2-4 weeks after order confirmation. Lead times for customized configurations may vary and will be confirmed upon project review. -
Q: Do you provide installation guidance or on-site support?
A: Yes, comprehensive technical support is part of our offering. We provide detailed installation manuals, wiring diagrams, and remote consultation. On-site support can be arranged for large projects or complex installations, subject to prior agreement. -
Q: How does a dry-type transformer differ from an oil-filled one?
A: Dry-type transformers use air or solid insulation (like epoxy resin), making them non-flammable, environmentally friendly, and requiring less maintenance. They are safer for indoor use. Oil-filled transformers use insulating oil for cooling, which can be a fire hazard and requires containment systems. -
Q: Is customization of the output voltage possible?
A: Absolutely. While the standard outputs are 400V, 380V, and 220V, we can design units with other secondary voltages upon request. Providing your exact input and output voltage requirements is the first step in the customization process. -
Q: What kind of maintenance does this transformer require?
A: Maintenance is minimal. It primarily involves periodic visual inspections for dust accumulation, checking terminal tightness, and ensuring adequate ventilation around the unit. There is no oil to test or replace. -
Q: Are your products compliant with international standards?
A: Our transformers are designed and manufactured in accordance with prevalent international standards such as IEC and ANSI. Specific standard compliance for your region can be confirmed during the order process.
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