15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V Step Up/Down With Pure Copper
Product Spotlights
As a dedicated manufacturer of electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. specializes in providing robust and reliable power solutions for industrial applications. Our 15-40kVA Three-Phase Dry Type Isolation Transformer is engineered to deliver precise voltage conversion and superior electrical isolation, ensuring the safety and stability of your power distribution systems. Designed with pure copper windings for optimal efficiency and durability, this transformer is a versatile core component for managing voltage levels from 660V to standard outputs of 400V, 380V, or 220V.
This product addresses critical needs in environments where voltage mismatches pose risks to equipment or where clean electrical isolation is mandatory. By stepping up or down voltage levels effectively, it protects sensitive machinery, enhances power quality, and facilitates the integration of equipment from different voltage standards. Our commitment to quality manufacturing, backed by a comprehensive management system, ensures that every transformer meets rigorous performance standards.
Below is a detailed overview of the transformer's features, technical specifications, and the tangible benefits it offers to your operations.
- High-Efficiency Pure Copper Windings: The use of 100% pure copper in the windings minimizes electrical losses, reduces operating temperature, and extends the transformer's service life compared to aluminum alternatives.
- Dry-Type, Air-Cooled Design: Unlike oil-filled transformers, this dry-type unit uses natural air cooling, eliminating risks of leakage, reducing maintenance needs, and allowing for installation in cleaner indoor environments without special containment.
- Versatile Voltage Conversion: Capable of stepping down from a 660V primary input to common secondary outputs (400V, 380V, 220V) or stepping up accordingly, providing flexibility for diverse international and industrial voltage standards.
- Electrical Isolation & Safety: Provides complete galvanic isolation between input and output circuits, protecting downstream equipment from surges, noise, and ground faults originating on the primary side.
- Robust Construction for Industrial Use: Built with high-grade insulation materials and a sturdy mechanical frame to withstand demanding industrial conditions, including variable loads and ambient factors.
- Customizable Configuration: Specific tap settings, protection features, or enclosure types can be tailored based on project requirements and client specifications.
The following table presents key technical parameters for the standard models within the 15-40kVA range:
| Parameter | Specification / Range |
|---|---|
| Power Rating (kVA) | 15, 20, 25, 30, 35, 40 |
| Primary Voltage (Input) | 660V AC, Three-Phase |
| Secondary Voltage (Output) | 400V / 380V / 220V AC, Three-Phase (selectable) |
| Frequency | 50Hz / 60Hz (standard) |
| Insulation Class | Standard for Dry-Type Transformers |
| Cooling Method | Natural Air (AN) |
| Winding Material | Pure Copper |
| Typical Efficiency | High (dependent on load) |
| Operating Ambient Temperature | Up to 40°C (standard) |
Implementing this transformer into your power infrastructure delivers several concrete advantages:
- Equipment Protection: Isolation shields motors, controls, and sensitive electronics from voltage spikes and electrical noise, reducing failure rates and maintenance costs.
- Energy Cost Reduction: High-efficiency copper windings lower energy losses during conversion, contributing to reduced operational electricity expenses over time.
- Installation Flexibility: The dry-type design allows for installation in standard electrical rooms without special fire suppression or containment systems, saving on space and auxiliary costs.
- System Compatibility: Solves voltage mismatch issues when integrating equipment designed for different regional standards (e.g., 660V equipment into a 380V grid).
- Long-Term Reliability: Robust construction and quality materials ensure stable performance over many years, even under cyclic industrial loads.
Jinhua Dika Electrical Equipment Co., Ltd. operates with a firm commitment to quality and international standards. Our manufacturing processes are guided by a structured management system, and we serve a global clientele across North America, South America, Europe, Asia, Africa, and Oceania, with an annual export value ranging between US$1 Million and US$1.5 Million. This global reach and consistent output underscore our capability to deliver reliable electrical products that meet diverse market requirements. With multiple shipment ports including Shanghai, Tianjin, Guangzhou, and Ningbo, we ensure efficient and accessible logistics for our partners worldwide.
Choosing our 15-40kVA Three-Phase Dry Type Isolation Transformer means investing in a solution that enhances system safety, improves energy efficiency, and provides adaptable voltage management. We invite you to contact us for detailed quotations, technical consultations, or to discuss custom configurations tailored to your specific project needs.
Frequently Asked Questions (FAQ)
-
What is the main advantage of a dry-type transformer over an oil-filled one?
Dry-type transformers use air as cooling and insulation medium, eliminating risks of oil leakage, fire hazards, and environmental contamination. They require less maintenance and can be installed in indoor spaces without special containment, making them safer and more convenient for many applications. -
Can this transformer be used for both step-up and step-down operations?
Yes, the transformer is designed for bidirectional voltage conversion. By configuring the connections appropriately, it can step down a 660V input to lower voltages (400V/380V/220V) or step up from those lower voltages to 660V output. -
Why are pure copper windings specified?
Pure copper windings offer higher electrical conductivity, lower resistive losses, better thermal performance, and greater mechanical strength compared to aluminum. This results in higher efficiency, cooler operation, longer lifespan, and better overload tolerance. -
What are the typical applications for this transformer?
Common applications include industrial power distribution panels, machine tool power supplies, integration of imported equipment with different voltage ratings, voltage stabilization for sensitive processes, and providing isolated power for testing or control circuits. -
Is the transformer suitable for outdoor installation?
The standard dry-type design is primarily for indoor or protected environments. For outdoor use, an appropriate weatherproof enclosure or specific IP-rated casing would be required, which can be provided as a customizable option. -
What protection features are included?
Standard units include basic thermal protection via temperature monitoring. Additional protection features such overcurrent protection, surge protection, or specific monitoring systems are available as optional add-ons based on customer requirements. -
How is the output voltage selected (400V, 380V, or 220V)?
The transformer is manufactured with specific winding ratios to produce the desired output voltage. The required output must be specified at the time of order, as it is a fixed design parameter for each unit. -
What is the expected delivery lead time?
Lead time depends on the specific kVA rating, configuration, and order volume. Generally, for standard models within the 15-40kVA range, production and delivery can be coordinated efficiently through our major shipment ports.
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