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

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Warranty

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Warranty thumbnail-3

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Warranty thumbnail-4

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Warranty thumbnail-5

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15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Warranty photo-2

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Warranty photo-3

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Warranty photo-4

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With Warranty photo-5

Product Spotlights

Industrial-grade three-phase dry-type isolation transformer (15-40kVA) for stepping down 660V to 400V/380V/220V. Provides complete galvanic isolation to protect sensitive equipment from surges and noise. Features fire-safe, low-maintenance dry construction, high efficiency, and flexible voltage configuration. Backed by a manufacturer's warranty for reliable power in global industrial applications.

US$ 159 ≥1 Unit

Key Specifications

Get Latest Price

Power Rating:

15-40kVA

Phase Configuration:

Three-Phase

Construction Type:

Dry Type, Air-Cooled

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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Power Rating 15-40kVA

Phase Configuration Three-Phase

Construction Type Dry Type, Air-Cooled

Input Voltage 660V

Output Voltage 400V/380V/220V

Isolation Type Galvanic Isolation

Insulation Class Class H or equivalent (customizable)

Cooling Method AN/AF (Air Natural/Air Forced)

Protection Level IP20 or higher (optional)

Warranty Standard warranty included

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 superior performance, safety, and longevity in demanding environments. Designed to step down voltage from 660V to 400V, 380V, or 220V, this transformer ensures stable power supply, protects sensitive equipment from voltage fluctuations and electrical noise, and enhances overall system safety through complete galvanic isolation. With our commitment to quality, backed by a comprehensive warranty, we offer a product that is a cornerstone for efficient and secure industrial operations.

Core Product Features & Technical Advantages:

Enhanced Safety & Equipment Protection: Provides complete electrical isolation between primary and secondary circuits, eliminating ground loops and protecting downstream machinery from surges, spikes, and common-mode noise.
Robust Dry-Type Construction: Utilizes vacuum pressure impregnated (VPI) or cast resin coil technology (depending on model), making it fire-resistant, environmentally friendly (no oil), and suitable for installation in confined spaces or areas with strict fire safety regulations.
High Efficiency & Low Losses: Features high-quality silicon steel cores and copper/aluminum windings designed to minimize no-load and load losses, resulting in lower operating temperatures and reduced energy costs over the transformer's lifespan.
Flexible Voltage Conversion: Primarily configured for 660V input to 400V output, with taps or dual windings often available to provide 380V or 220V outputs, catering to various international and regional voltage standards.
Durable & Low Maintenance: The sealed, moisture-resistant construction requires minimal maintenance compared to liquid-filled transformers. It is designed for reliable operation in harsh conditions with high humidity or dust.
Quiet Operation & Compact Design: Engineered for low acoustic noise levels, making it ideal for installations near offices or residential areas. Its compact footprint saves valuable floor space in electrical rooms.

Technical Specifications Overview:

Parameter	Specification
Rated Power (kVA)	15, 20, 25, 30, 35, 40
Primary Voltage	660V (±5% or ±2x2.5% taps, customizable)
Secondary Voltage	400V / 380V / 220V (configurable)
Frequency	50Hz / 60Hz
Insulation Class	Class H (180°C) or Class F (155°C)
Cooling Method	AN/AF (Air Natural / Air Forced)
Protection Degree	IP20 (standard), IP23, IP54 (optional)
Sound Level	≤65 dB(A) (typical at 1m distance)

Benefits for Your Business:

Operational Reliability: Ensures a clean, stable power supply, reducing unexpected downtime and maintenance costs for critical equipment like CNC machines, motors, and PLC systems.
Safety Compliance: Helps meet electrical safety standards in industrial facilities by isolating sensitive control circuits from noisy power lines.
Global Compatibility: With configurable output voltages, it simplifies integrating machinery from different regions into a single plant's electrical system.
Long-Term Value: The dry-type design, high efficiency, and included warranty translate to a lower total cost of ownership through energy savings and reduced service intervals.

Trust in the expertise of Jinhua Dika Electrical, a manufacturer with a proven track record of supplying quality electrical equipment across diverse markets including North America, Southeast Asia, Europe, and Africa. Our operational scale, supported by an annual export value in the range of US$1-1.5 million and a dedicated team, ensures we can meet your volume and customization needs. We facilitate smooth logistics through major ports like Shanghai, Tianjin, Guangzhou, and Ningbo. This transformer is more than a component; it's a reliable investment in your facility's power integrity and safety. Contact us today to discuss your specific requirements and discover how our isolation transformer can be the solution for your application.

Frequently Asked Questions (FAQ)

What is the primary application for this 660V to 400V isolation transformer?
This transformer is commonly used in industrial settings to step down higher distribution voltages (like 660V) to standard machine operating voltages (400V/380V). It provides isolation for sensitive equipment, protects against power quality issues, and is ideal for manufacturing plants, mining operations, and large commercial facilities.
Can the output voltage be customized to something other than 400V/380V/220V?
Yes. As a manufacturer, we can customize the secondary winding to provide various output voltages upon request. Please provide your specific voltage requirements during inquiry.
What does 'Dry Type' mean, and what are its advantages?
'Dry Type' means the transformer uses solid insulation (like epoxy resin or VPI-treated materials) and air for cooling, instead of oil. Advantages include being fire-safe, environmentally friendly (no risk of oil leaks), lower maintenance, and suitability for indoor installation without a containment vault.
Is this transformer suitable for outdoor installation?
The standard model has an IP20 protection rating, suitable for indoor, dry environments. For outdoor installation, we offer optional higher ingress protection enclosures (e.g., IP23 or IP54) to protect against rain and dust. Please specify your environmental conditions.
What is included in the warranty, and what is its duration?
Our standard warranty covers manufacturing defects in materials and workmanship for a specified period (e.g., 1-2 years) from the date of shipment. The exact terms, including what is covered and the warranty period, will be detailed in the sales contract. Extended warranty options may be available.
Do you provide technical drawings or installation guidelines?
Yes. Upon order confirmation, we provide detailed dimensional drawings, wiring diagrams, and comprehensive installation & operation manuals to ensure correct and safe installation.
What are the delivery lead times for these transformers?
Lead times vary based on the specific kVA rating, customization requirements, and order quantity. Standard models typically have shorter lead times. We provide an estimated delivery schedule with our quotation.
Can you assist with selecting the right kVA rating for my application?
Absolutely. Our technical team can help you determine the appropriate transformer size (15, 20, 25, 30, 35, or 40kVA) based on your load profile, inrush currents, and future expansion plans. Please share your load details for a recommendation.