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Home > Electrical & Electronics > Passive Components > Capacitor > 15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution thumbnail-3

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution thumbnail-4

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution thumbnail-5

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution photo-1

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution photo-2

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution photo-3

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution photo-4

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for Industrial Power Distribution photo-5

Product Spotlights

This 15-40kVA three-phase dry-type isolation transformer safely converts 660V to 400V/380V/220V for industrial power distribution. Its oil-free design ensures safety and low maintenance, while providing complete galvanic isolation to protect sensitive equipment from surges and noise. Built with high-grade materials for efficiency and durability, it offers flexible configurations and complies with international standards, delivering reliable performance in demanding environments.

US$ 159 ≥1 Unit

Key Specifications

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Application:

Other, Industrial Power Distribution Systems

Power Rating:

15-40 kVA

Primary Voltage:

660V

Contact Supplier Request Quote Chat Now

Jinhua Dika Electrical Equipment Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Application Other, Industrial Power Distribution Systems

Power Rating 15-40 kVA

Primary Voltage 660V

Secondary Voltage 400V/380V/220V

Phase Three-Phase

Cooling Type Dry Type (AN/AF)

Insulation Class Class F or H (customizable)

Enclosure Protection IP20, IP23 (optional)

Mounting Wall-mounted or Floor-standing

Standards Compliance Customizable to IEC, ANSI, or other regional standards

As a professional manufacturer of electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. specializes in providing robust and reliable power solutions for demanding industrial environments. Our 15-40kVA Three-Phase Dry Type Isolation Transformer is engineered to deliver exceptional performance in converting 660V supply to standardized 400V, 380V, or 220V outputs, ensuring safe and stable power distribution for your critical machinery and processes. With over a decade of experience and a commitment to quality, we design these transformers to offer superior electrical isolation, enhanced safety, and long-term operational reliability.

This transformer serves as a vital link in industrial power systems, providing voltage transformation and galvanic isolation to protect sensitive equipment from power surges, harmonics, and ground loops. Its dry-type construction eliminates fire and environmental hazards associated with liquid-cooled units, making it ideal for installation in factories, workshops, and facilities where safety is paramount.

Key Features & Technical Advantages:

Robust Dry-Type Design: Utilizes vacuum pressure impregnation (VPI) technology for the windings, ensuring excellent moisture resistance, thermal stability, and a long service life. No oil or coolant is required, reducing maintenance and fire risk.
Precise Voltage Conversion: Efficiently steps down 660V three-phase input to precisely regulated 400V, 380V, or 220V three-phase output, accommodating various international and regional industrial voltage standards.
Superior Isolation & Protection: Provides complete galvanic isolation between primary and secondary circuits. This effectively suppresses transient voltages, reduces electrical noise, and protects downstream equipment from faults on the supply side.
High-Efficiency Performance: Designed with high-grade silicon steel cores and copper/aluminum windings to minimize no-load and load losses, contributing to lower operating costs and energy savings over time.
Flexible Configuration: Available in a power range from 15kVA to 40kVA. Options include different tap settings, enclosure protection ratings (IP20, IP23), and mounting styles (wall or floor) to suit specific installation requirements.
Enhanced Safety Features: Built with Class F or H insulation systems capable of withstanding high temperatures. Optional features include temperature sensors, fan cooling for increased capacity (AN/AF), and terminal covers for operator safety.

Technical Specifications Overview:

Parameter	Specification
Rated Power (kVA)	15, 20, 25, 30, 40
Input Voltage	660V AC, 3-Phase, 50/60Hz
Output Voltage	400V / 380V / 220V AC, 3-Phase
Insulation Class	Class F (155°C) or Class H (180°C)
Cooling Method	AN (Air Natural) or AF (Air Forced)
Vector Group	Dyn11, Yyn0, or as requested
Noise Level	< 55 dB(A) (typical at 1m distance)

Benefits for Your Operation:

Equipment Protection: Shields motors, CNC machines, PLCs, and other sensitive loads from voltage spikes and common-mode noise, reducing downtime and repair costs.
Operational Safety: The dry-type, flame-retardant construction allows for installation in clean rooms, crowded electrical rooms, or near sensitive processes without special containment.
Compatibility & Flexibility: Enables the integration of machinery designed for different voltage standards (e.g., 400V European equipment into a 660V supply grid) within a single facility.
Reduced Total Cost of Ownership: High efficiency translates to lower energy losses. Minimal maintenance requirements (no oil testing or replacement) further reduce long-term operational expenses.
Reliable Power Quality: Improves power factor and helps stabilize voltage levels, leading to smoother operation and potentially extending the lifespan of connected equipment.

Trust & Commitment:

Jinhua Dika Electrical Equipment Co., Ltd. is a dedicated manufacturer with a solid track record, exporting our products to markets worldwide, including North America, South America, Europe, Southeast Asia, and Africa. Our operations are backed by a comprehensive quality management system, and we hold relevant industry certifications. With an annual export value ranging between US$1 Million and US$1.5 Million and a team of experienced professionals, we have the capacity and expertise to deliver consistent quality. We offer flexible shipping options from major ports like Shanghai, Tianjin, Guangzhou, and Ningbo to ensure timely delivery. Choose our 15-40kVA Dry Type Isolation Transformer for a solution that combines technical precision with durable construction, ensuring your industrial power distribution network operates with safety, efficiency, and unwavering reliability.

Frequently Asked Questions (FAQ)

Q: What is the main advantage of a dry-type transformer over an oil-filled one for my factory?
A: Dry-type transformers use air or resin for cooling and insulation, eliminating risks of oil leaks, fires, or environmental contamination. They are safer, require less maintenance, and are suitable for indoor installation without special fire protection vaults.
Q: Can this transformer handle frequent load fluctuations common in industrial settings?
A: Yes. Designed with robust materials and construction, it can withstand typical industrial load cycles, including motor starts and stops. The thermal capacity of Class F/H insulation ensures reliable performance under variable loads.
Q: My supply voltage is not exactly 660V. Can the transformer accommodate slight variations?
A: Our transformers typically include tap changers (optional) on the primary side, allowing adjustment to compensate for input voltage variations within a standard range (e.g., ±5% or ±10%), ensuring correct output voltage.
Q: What are the standard delivery lead times for these units?
A: Lead times vary based on configuration and order quantity. Standard models are often available for prompt shipment, while customized units may require a production period. Specific timelines can be provided upon request.
Q: Are these transformers suitable for outdoor installation?
A: The standard enclosure is IP20 for indoor use. For outdoor installation, we recommend specifying a higher protection rating like IP23 or a dedicated weatherproof enclosure (available upon request) to shield against rain and dust.
Q: Do you provide technical support for installation and integration?
A: Yes, we provide detailed installation manuals, wiring diagrams, and technical data sheets. Further engineering support for system integration can be arranged based on project requirements.
Q: What is the expected operational lifespan of this transformer?
A: With proper installation and operation within its rated specifications, a dry-type isolation transformer can have a service life exceeding 25 years. Key factors include load profile, ambient temperature, and maintenance practices.
Q: Can you customize the transformer for a specific voltage ratio or special mounting?
A: Absolutely. As a manufacturer, we offer customization services for various parameters, including non-standard voltage ratios, special vector groups, unique mounting brackets, and additional monitoring features. Please contact us with your detailed requirements.