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Home > Electrical & Electronics > Power Supply & Distribution > Switchgear > 30kVA Dry Type Transformer, 11kV Primary Voltage, 440V Secondary, Copper Winding

30kVA Dry Type Transformer, 11kV Primary Voltage, 440V Secondary, Copper Winding

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30kVA Dry Type Transformer, 11kV Primary Voltage, 440V Secondary, Copper Winding photo-1

30kVA Dry Type Transformer, 11kV Primary Voltage, 440V Secondary, Copper Winding photo-2

30kVA Dry Type Transformer, 11kV Primary Voltage, 440V Secondary, Copper Winding photo-3

30kVA Dry Type Transformer, 11kV Primary Voltage, 440V Secondary, Copper Winding photo-4

30kVA Dry Type Transformer, 11kV Primary Voltage, 440V Secondary, Copper Winding photo-5

Product Spotlights

30kVA dry-type transformer with 11kV/440V ratio and copper windings for high efficiency and reliability. Cast resin insulation ensures fire safety, low maintenance, and suitability for indoor/ sensitive environments. Features low noise operation, customizable protection (IP ratings), and compliance with international design standards. Ideal for industrial, commercial, and infrastructure applications seeking a safe, durable, and cost-effective power solution.

US$ 1600 - 2900 MOQ: 1 Unit

Key Specifications

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Rated Power:

30 kVA

Primary Voltage:

11 kV

Secondary Voltage:

440 V

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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Rated Power 30 kVA

Primary Voltage 11 kV

Secondary Voltage 440 V

Winding Material High Conductivity Copper

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

Insulation Class F or H (Standard)

Enclosure Protection IP00, IP20, IP23 (Standard)

Mounting Type Floor Mounted

Application Industrial, Commercial, Infrastructure

Standards Compliance IEC, ANSI, IEEE (Design Basis)

As a professional manufacturer of electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. is proud to introduce our 30kVA Dry Type Transformer. Engineered for reliability and efficiency, this transformer is designed to safely step down 11kV primary voltage to a usable 440V secondary output, making it an ideal solution for a wide range of industrial and commercial applications. With over a decade of experience and a commitment to quality certified by multiple international standards, we deliver robust power distribution components trusted by clients across the globe from North America to Southeast Asia.

This transformer is built with high-conductivity copper windings, ensuring superior electrical performance, lower losses, and excellent overload capacity compared to aluminum alternatives. Its dry-type, cast resin construction eliminates fire and environmental hazards associated with liquid-filled units, allowing for safe installation indoors, in close proximity to loads, and in environmentally sensitive areas.

Core Features & Technical Advantages:

High-Efficiency Copper Windings: Reduces I²R losses, improves energy efficiency, and provides better thermal conductivity for cooler operation and longer lifespan.
Cast Resin Encapsulation: The windings are fully encapsulated in high-grade epoxy resin, providing excellent protection against moisture, dust, and corrosive atmospheres (IP20 standard). This ensures stable performance in harsh environments.
Low Noise Operation: Advanced design and rigid construction minimize audible hum, making it suitable for installation in offices, hospitals, schools, and residential complexes.
Fire Safety & Environmental Safety: Contains no flammable or toxic insulating oil. It is self-extinguishing and does not release harmful gases, meeting stringent fire safety codes.
Maintenance-Free Design: Requires no periodic oil testing, filtration, or replacement, significantly reducing lifecycle costs and operational downtime.
Flexible Configuration: Available with various tap changers (off-circuit or on-load, optional), temperature monitoring devices (PT100 sensors), and enclosure protection levels (IP00, IP23, IP54 upon request).

Key Technical Specifications:

Parameter	Specification	Details / Benefits
Rated Capacity	30 kVA	Ideal for medium-power applications like small manufacturing lines, commercial buildings, and water treatment plants.
Voltage Ratio	11 kV / 440 V	Standard MV to LV conversion for industrial and commercial power distribution networks.
Vector Group	Dyn11, Yyn0, or others	Customizable to match your grid requirements and provide harmonic suppression.
Insulation Class	Class F (155°C) or H (180°C)	High thermal endurance for reliable operation under varying load conditions.
Impedance Voltage	Approx. 4% - 6% (Standard)	Optimized for limiting short-circuit currents while maintaining good voltage regulation.
Sound Level	< 55 dB(A) (Typical)	Quiet operation suitable for noise-sensitive environments.

Application Scenarios & Customer Benefits:

Industrial Plants: Provides safe, reliable power for machinery, motors, and control systems. Its rugged design withstands industrial atmospheres.
Commercial Buildings: Perfect for shopping malls, hotels, and office towers where indoor installation and fire safety are paramount.
Infrastructure Projects: Used in water pumping stations, wastewater treatment facilities, and tunnel lighting systems.
Renewable Energy Integration: Suitable for step-down applications in solar or wind farm substations.
Benefits for You: Lower total cost of ownership due to minimal maintenance, reduced energy losses translating to operational savings, enhanced safety for personnel and assets, and compliance with modern environmental regulations.

Backed by Jinhua Dika's robust manufacturing capabilities and a proven track record of exporting over US$1 million annually to diverse markets including North America, Europe, and Southeast Asia, this 30kVA Dry Type Transformer represents a dependable investment in your power infrastructure. Our adherence to a comprehensive quality management system ensures every unit meets rigorous performance standards. Choose a partner with global reach and local expertise—contact us today to discuss your specific requirements, request a detailed quotation, or learn more about our customizable options for voltage ratios, protection levels, and accessories.

Frequently Asked Questions (FAQ)

Q: What is the main advantage of a dry-type transformer over an oil-filled one?
A: Dry-type transformers use solid insulation (like cast resin), eliminating the risk of oil leaks, fires, and environmental contamination. They are safer for indoor installation, require less maintenance, and have no fluid to monitor or replace.
Q: Why is copper winding specified, and are aluminum windings available?
A: Copper has higher electrical conductivity than aluminum, resulting in lower resistive losses (I²R), better efficiency, superior short-circuit withstand capability, and generally a more compact design for the same rating. Aluminum windings can be considered for specific cost-sensitive projects upon request.
Q: Can this transformer be used outdoors?
A: The standard IP20 enclosure is for indoor use. For outdoor installation, we offer higher Ingress Protection ratings like IP23 (protected against water spray at angles up to 60°) or IP54 (dust and water splash protected). Please specify your environmental conditions.
Q: What standards does this transformer comply with?
A: Our transformers are designed and manufactured in accordance with international standards such as IEC 60076-11 and ANSI/IEEE C57.12.01. Specific certification for a particular market (e.g., CE marking) can be provided upon request and may involve additional testing.
Q: Is temperature monitoring included?
A: Standard units typically include built-in temperature sensors (like PT100) for winding temperature monitoring. This can be connected to your building management or protection system. More advanced monitoring options are available.
Q: What is the typical delivery lead time for this model?
A: For standard specifications, the lead time is approximately 4-6 weeks after order confirmation. This can vary based on order quantity, customization requirements, and current production schedule.
Q: Do you provide installation and commissioning support?
A: We provide detailed installation manuals and wiring diagrams. On-site technical support for installation and commissioning can be arranged as a separate service, depending on the project location and scope.
Q: Are different primary and secondary voltage combinations possible?
A: Absolutely. While 11kV/440V is a common configuration, we can manufacture transformers with various primary voltages (e.g., 10kV, 13.8kV) and secondary voltages (e.g., 400V, 415V, 480V) to match your local grid specifications.