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15-40kVA Three-Phase Dry Type Isolation Transformer 660V to 400V/380V/220V for CNC Machine Power Supply
Product Spotlights
Provides galvanic isolation and stable voltage conversion (660V to 400V/380V/220V) specifically for CNC machines. Dry-type construction ensures safety, low maintenance, and indoor suitability. Enhances equipment protection, reduces downtime, and improves machining accuracy with robust 15-40kVA three-phase power handling.
US$ 159
≥1 Unit
Key Specifications
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Application:
Other, CNC Machine Power Supply
Rated Power:
15-40 kVA
Input Voltage:
660V AC, Three-Phase
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, CNC Machine Power Supply
Rated Power
15-40 kVA
Input Voltage
660V AC, Three-Phase
Output Voltage
400V/380V/220V AC, Three-Phase
Transformer Type
Dry Type, Isolation
Cooling Method
Air Natural (AN) / Air Forced (AF)
Insulation Class
Class H (180°C) or Class F (155°C)
Mounting
Floor Mounting or Wall Mounting
Protection Level
IP20 or IP23 (Standard)
Frequency
50Hz/60Hz
As a professional manufacturer, 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 stable and clean power for your critical CNC machinery, ensuring operational safety and protecting sensitive electronic components from voltage fluctuations and electrical noise. With over a decade of experience and a commitment to quality, we understand the importance of a dependable power supply in maximizing machine uptime and product quality.
This transformer serves as a vital link between your power source and your CNC equipment, offering galvanic isolation to prevent ground loops and reduce common-mode noise. It is specifically designed to step down a 660V three-phase supply to the standard voltages required by most CNC machines, such as 400V, 380V, or 220V. By integrating this transformer into your system, you can effectively mitigate issues like voltage sags, surges, and harmonics, which are common culprits behind unexpected machine shutdowns and reduced component lifespan.
Core Features and Technical Advantages:
- Enhanced Equipment Protection: The isolation barrier effectively blocks transient voltages and electrical noise from the primary side, safeguarding your CNC machine's delicate control systems, drives, and sensors.
- Voltage Stabilization: Provides a stable secondary voltage output, crucial for the precision operation of CNC spindles and servo motors, leading to improved machining accuracy.
- Dry-Type Construction: Utilizes advanced vacuum pressure impregnation (VPI) or resin casting for the windings. This design is maintenance-free, fire-resistant, environmentally friendly (no oil), and safe for indoor installation without special containment.
- High-Efficiency Design: Engineered with high-quality silicon steel cores and copper/aluminum windings to minimize no-load and load losses, resulting in lower operating costs over the transformer's lifetime.
- Robust Build for Industrial Use: Housed in a sturdy enclosure with adequate ventilation. Suitable for environments with dust and moisture when specified with higher IP protection ratings.
- Flexible Configuration: Available in a power range from 15kVA to 40kVA, with options for different input/output voltage taps, protection class (IP20/IP23), and cooling methods (AN/AF) to match your specific site requirements.
Technical Specifications Table:
| Parameter | Specification |
| Model Series | DKT-3P (Dry Type, Three-Phase) |
| Rated Capacity | 15kVA, 20kVA, 25kVA, 30kVA, 40kVA |
| Primary Voltage (Input) | 660V ±5%, 3-Phase, 3-Wire |
| Secondary Voltage (Output) | 400V / 380V / 220V, 3-Phase, 3-Wire or 4-Wire |
| Frequency | 50Hz or 60Hz |
| Insulation Class | Class F (155°C) or Class H (180°C) standard |
| Temperature Rise | ≤ 100K (Class F) or ≤ 125K (Class H) |
| Noise Level | ≤ 55 dB(A) (at 1m distance, typical) |
| Cooling | Air Natural (AN) up to 30kVA; Air Forced (AF) optional for higher loads |
Benefits for Your Operation:
- Reduced Downtime: Protects against power-related faults, minimizing costly production stoppages.
- Extended Machine Life: Cleaner power reduces stress on CNC components, leading to fewer repairs and longer service intervals.
- Improved Product Quality: Stable voltage ensures consistent performance of motors and drives, reducing scrap rates due to power issues.
- Safety Compliance: Provides safe electrical separation, meeting safety requirements for industrial equipment power supply.
- Easy Installation & Integration: Compact, dry-type design allows for flexible placement near the CNC machine without complex infrastructure.
Frequently Asked Questions (FAQ):
-
Q: Why do I need an isolation transformer for my CNC machine instead of a regular step-down transformer?
A: An isolation transformer provides galvanic separation between the input and output circuits. This is critical for blocking electrical noise, harmonics, and transient spikes from the mains supply, which can interfere with the sensitive digital controls and encoders in CNC machines. A regular transformer may not offer this level of protection. -
Q: Can this transformer handle the inrush current of my CNC machine when it starts?
A: Yes, our dry-type isolation transformers are designed with a sufficient margin to handle typical motor inrush currents associated with CNC equipment. The specific kVA rating should be selected considering the machine's full load current and starting characteristics. -
Q: What is the difference between Class F and Class H insulation?
A: The class indicates the maximum temperature the insulation system can withstand. Class H (180°C) offers a higher temperature tolerance than Class F (155°C), potentially allowing for a more compact design or better performance in high ambient temperatures. We can advise on the best choice for your environment. -
Q: Is outdoor installation possible?
A: The standard IP20 or IP23 enclosure is for indoor use. For outdoor installation, a higher IP rating (e.g., IP54) and possibly a weatherproof enclosure would be required, which can be provided as a custom option. -
Q: How do I determine the correct kVA size for my application?
A: You should calculate the total connected load (in kVA or kW) of your CNC machine and any auxiliary equipment. It's recommended to add a safety margin of 20-25%. Our technical team can assist you with sizing based on your machine's nameplate data. -
Q: Do you provide custom voltage ratios outside of 660V to 400V/380V/220V?
A: Yes, as a manufacturer, we have the capability to produce transformers with various primary and secondary voltage combinations. Please contact us with your specific requirements. -
Q: What is the typical lead time for an order?
A> For standard models within the 15-40kVA range, the lead time is typically 2-4 weeks. Custom configurations may require additional time. We maintain efficient production processes to ensure timely delivery. -
Q: Are there any special maintenance requirements?
A: Dry-type transformers are virtually maintenance-free. Periodic visual inspections for dust accumulation and checking terminal connections for tightness are generally sufficient. There is no oil to test or replace.
Backed by Jinhua Dika Electrical's established manufacturing expertise and a commitment to quality management, this transformer is a reliable component for your industrial power system. Our products reach a global clientele across North America, Europe, Asia, and beyond, supported by an annual export value reflecting consistent international trust. We ensure smooth logistics through major ports like Shanghai, Tianjin, Guangzhou, and Ningbo. Choose our 15-40kVA Three-Phase Dry Type Isolation Transformer to secure a stable power foundation for your CNC operations, enhance equipment longevity, and protect your manufacturing investment. Contact us today to discuss your specific needs and receive a detailed quotation.
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1Yr
Business Type
Manufacturer
Annual Export Value
US$1 Million - US$1.5 Million
Total Employees
11 - 50 People
Product Certifications
HACCP, TL900, QS9000, SA8000, ISO9001, ISO9004, ISO17799, ISO9000, ISO14000, ISO10441, ISO16949, TS16969, ISO19011:2000, OHSAS18001, Others
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