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Home > Electrical & Electronics > Passive Components > Capacitor > 15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure thumbnail-3

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure thumbnail-4

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure thumbnail-5

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure photo-1

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure photo-2

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure photo-3

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure photo-4

15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V With IP23 Enclosure photo-5

Product Spotlights

A 15-40kVA three-phase dry-type isolation transformer designed for industrial safety and stability. Converts 660V input to 400V/380V/220V outputs. Features an IP23 protective enclosure for dusty/damp environments, offers galvanic isolation to protect equipment and personnel, and utilizes a maintenance-free, fire-safe dry-type design. Ideal for global applications requiring reliable voltage conversion and power conditioning.

US$ 159 ≥1 Unit

Key Specifications

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Rated Power Range:

15 kVA, 20 kVA, 25 kVA, 30 kVA, 40 kVA

Primary Voltage:

660V, Three-Phase

Secondary Voltage:

400V / 380V / 220V, Three-Phase

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 Range 15 kVA, 20 kVA, 25 kVA, 30 kVA, 40 kVA

Primary Voltage 660V, Three-Phase

Secondary Voltage 400V / 380V / 220V, Three-Phase

Transformer Type Dry Type, Air-Cooled, Isolation

Enclosure Protection Rating IP23

Insulation Class Class F or Class H (Standard)

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

Winding Material High-Purity Copper or Aluminum

Mounting Type Floor Mounting

As a specialized manufacturer, Jinhua Dika Electrical Equipment Co., Ltd. brings you a robust and reliable solution for industrial power conditioning with our 15-40kVA Three-Phase Dry Type Isolation Transformer. Engineered to convert 660V three-phase input to standardized 400V, 380V, or 220V outputs, this transformer is the cornerstone for stabilizing and isolating electrical supply in demanding environments. Our commitment to quality, backed by a comprehensive certification system including ISO 9001, ensures that every unit delivers exceptional performance, safety, and longevity, protecting your sensitive equipment from voltage fluctuations, harmonics, and ground loops.

Core Features & Technical Advantages:

Superior Isolation & Safety: The dry-type, air-cooled design completely isolates the primary and secondary windings, eliminating any direct electrical connection. This provides galvanic isolation, crucial for protecting personnel and equipment from electrical shocks, reducing ground loop currents, and suppressing noise and transients.
Robust IP23 Enclosure: Housed in a protective IP23 rated enclosure, the transformer is shielded against the ingress of solid objects larger than 12.5mm and water sprays at angles up to 60° from vertical. This makes it suitable for installation in workshops, manufacturing floors, and other industrial settings where dust and occasional moisture are present.
High-Efficiency Design: Utilizing advanced core materials and precision-wound coils (available in high-purity copper or aluminum), our transformers minimize core and copper losses, leading to high operational efficiency and reduced energy costs over their lifespan.
Flexible Voltage Configuration: Designed for versatile application, the transformer provides selectable secondary output voltages (400V, 380V, 220V three-phase), allowing it to interface seamlessly with various international equipment standards and local grid voltages.
Low Maintenance & Fire Safety: As a dry-type transformer, it uses air as the cooling and insulating medium, eliminating the risk of oil leaks, fire hazards associated with liquid dielectrics, and the need for complex containment systems. This translates to significantly lower maintenance requirements and enhanced operational safety.
Customizable Options: While our standard models cover the 15-40kVA range, customizations are available upon request. Options may include different tap settings, specific insulation classes (Class F or H), special paint finishes, and additional protective features like temperature controllers and fault alarms.

Detailed Technical Specifications:

Parameter	Specification
Rated Capacity	15, 20, 25, 30, 40 kVA
Input Voltage	660V, 3-Phase, 50/60Hz
Output Voltage	400V / 380V / 220V, 3-Phase (Configurable)
Connection Type	Delta (Primary) / Wye (Secondary) typical
Insulation Class	Class F (155°C) or Class H (180°C)
Cooling Method	AN/AF (Air Natural / Air Forced)
Enclosure Protection	IP23
Standards Compliance	IEC, ANSI, or other international standards

Benefits for Your Operation:

Equipment Protection: Shields motors, CNC machines, PLCs, and other sensitive electronics from voltage spikes, sags, and electrical noise, extending their service life.
Operational Continuity: Enhances system stability, reducing unexpected downtime caused by power quality issues.
Safety Compliance: Meets essential safety requirements for industrial installations, contributing to a safer workplace.
Global Compatibility: With its adaptable voltage outputs, it is an ideal solution for multinational companies, export-oriented manufacturing, and regions with varying voltage standards.
Cost-Effective Power Solution: The dry-type design reduces total cost of ownership through minimal maintenance, high efficiency, and long-term reliability.

Trust in a product backed by a manufacturer with a proven global footprint. Jinhua Dika Electrical Equipment exports to diverse markets across North America, South America, Europe, Asia, Africa, and Oceania, with an annual export value demonstrating strong international demand and reliability. Our multi-port shipping capability (Shanghai, Tianjin, Guangzhou, Ningbo) ensures efficient and flexible logistics. When you choose this isolation transformer, you are not just purchasing a component; you are investing in a power management solution built on a foundation of stringent quality management (ISO 9001), environmental responsibility, and occupational health and safety standards. Contact us today to discuss how this 15-40kVA transformer can be integrated into your power system for enhanced performance and peace of mind.

Frequently Asked Questions (FAQ):

Q: What is the main purpose of this isolation transformer?
A: Its primary purpose is to provide galvanic isolation between a 660V three-phase power source and your equipment operating at 400V, 380V, or 220V. This protects against electrical shocks, eliminates ground loops, and filters out line noise and voltage spikes.
Q: Can this transformer be used outdoors?
A: The IP23 rating offers protection against solid objects and water sprays from above, but it is not fully waterproof or submersible. It is designed for indoor use or under a protective canopy outdoors where it is not exposed to direct, heavy rainfall or hose-directed water.
Q: What is the difference between Class F and Class H insulation?
A: Class F insulation allows a temperature rise of up to 115°C (100°C rise + 15°C hotspot), while Class H allows up to 140°C (125°C rise + 15°C hotspot). Class H offers a higher thermal margin, potentially extending transformer life in high-ambient-temperature environments.
Q: Is forced cooling (fans) always required?
A: For the standard AN (Air Natural) rating, fans are not required at base load. However, for operation at or near full capacity continuously, or in high ambient temperatures, AF (Air Forced) cooling with fans can be engaged to increase capacity and ensure optimal temperature management.
Q: Do you offer transformers with different primary voltages?
A: Yes. While 660V primary is a common standard for this product range, we manufacture transformers with various primary voltage ratings. Custom designs are available upon request to match your specific incoming supply voltage.
Q: What are the typical delivery lead times?
A: Lead times vary based on the specific kVA rating, configuration, and order quantity. Standard models typically have shorter lead times. Please contact our sales team with your requirements for an accurate delivery schedule.
Q: What kind of maintenance does this dry-type transformer need?
A: Maintenance is minimal. It primarily involves periodic visual inspections for dust accumulation (cleaning if necessary), checking terminal connections for tightness, and ensuring ventilation paths are unobstructed. There is no oil to test or replace.
Q: Can you provide technical support for installation?
A: Absolutely. We provide detailed installation manuals, wiring diagrams, and datasheets with each unit. Our engineering team is also available to offer remote support and guidance for proper installation and commissioning.