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SG Series Three-phase Copper winding Isolation Transformer, NEMA 3R Metal Enclosure
1. Product Overview
The SG Series Three-Phase Copper Isolation Transformer is specially designed for precision power supply applications. Capacity ranges from 500VA to 300KVA, with full customization available upon request. Featuring 100% copper windings and a high insulation class design, it effectively isolates electrical noise, suppresses voltage fluctuations, and provides clean, stable power for sensitive equipment.
It is widely used with imported medical equipment, CNC machine tools, injection molding machines, laser cutting systems, and other high-end industrial equipment.
2. Core Configuration & Materials
2.1 Upgraded Hardware with Smart LCD Display
The transformer is equipped with an intelligent LCD and dual digital meters for both input and output voltage monitoring. Combined with power indicator lights, the operating status can be checked at a glance.
The upgraded design offers stable voltage performance, high durability, and efficient operation, making on-site monitoring easier and more convenient.
2.2 True Power Rating with Premium Materials
Every transformer is built with full-rated capacity and genuine materials. We strictly avoid exaggerated specifications or undersized components. Each unit undergoes rigorous testing to ensure long-term stable performance.
2.3 Premium Materials for Safety & Durability
180°C High-Temperature Enameled Copper Wire
High-grade copper winding wire with excellent insulation performance and resistance to aging, significantly extending service life.
DMD Insulation Paper
Combined with high-strength DMD insulation material, capable of withstanding 3500V dielectric withstand testing for enhanced electrical safety.
Imported Cold-Rolled Silicon Steel Core
Manufactured using premium silicon steel sheets for superior heat dissipation, low no-load loss, and excellent energy efficiency.
Wiring Terminals
Available with high-temperature BT terminals or insulated terminal board wiring solutions. Both provide safe, clean wiring and support customer customization requirements.
3. Technical Specifications
| Item | Specification |
|---|---|
| Model | SG Series |
| Phase | Three-Phase |
| Input Voltage | 660V / 440V / 380V / 220V (Customizable) |
| Output Voltage | 1140V / 690V / 660V / 440V / 415V / 400V / 380V / 220V (Customizable) |
| Voltage Accuracy | ±1% |
| Frequency | 50–60Hz |
| Voltage Regulation | ≤1.5% |
| Insulation Class | Class F, 150°C Temperature Resistance |
| Insulation Resistance | 3000VAC/min |
| Efficiency | ≥99% (Isolation Type) |
| Design Life | 20 Years |
| Overload Capacity | Supports 1.2× Rated Load Operation |
| Cooling Method | AN / FN (Natural Cooling / Fan Cooling) |
| Temperature Rise | ≤60°C |
| Connection Type | Y/YNO |
| Safety Standard | GB19212.5-2013 |
4. Design Features
Efficient Heat Dissipation
The enclosure features a multi-ventilation grille structure for rapid heat dissipation, reducing temperature rise and ensuring stable long-term continuous operation.
Easy Mobility
Equipped with heavy-duty swivel casters for smooth 360° movement, allowing convenient positioning within workshops and industrial environments.
Safety Protection
Includes a safety lock mechanism to prevent accidental operation during maintenance and avoid opening the enclosure while energized.
Convenient Handling
Integrated carrying handles make installation and transportation easier.
5. Applications
Designed to provide clean and stable power for:
Imported medical equipment (CT / MRI systems)
CNC machining centers, milling machines, grinding machines, and punch presses
Injection molding machines and laser cutting equipment
Automated production lines and industrial control systems
6. Customization Service
Custom configurations are available for:
Voltage ratings
Wiring methods
Protective enclosures (including NEMA 3R metal enclosure)
Installation structure
Power capacity specifications
We provide tailored solutions to meet different equipment power supply requirements.
7. Available Ratings & Dimensions
The SG Series is available in standard capacities from 0.5KVA to 300KVA. Many standard models are kept in stock for fast delivery.
Detailed product dimensions and packaging information can be provided based on specific models. Customized dimensions are also available to match customer installation space requirements.
