SG Outdoor Industrial Three-Phase Dry-Type Isolation Transformer with IP44 Weatherproof
1. Product Overview
The SG Series Outdoor Three-Phase Dry-Type Isolation Transformer is specially designed for industrial outdoor applications. Featuring an IP44 weatherproof and UV-resistant metal enclosure, the series covers capacities from 500VA to 300KVA and supports full customization based on project requirements.
The transformer effectively isolates electrical noise, suppresses voltage fluctuations, and provides clean and stable power for outdoor precision 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. Key Features
Industrial-Grade Outdoor Protection
Equipped with an IP44 weatherproof and sun-resistant enclosure, the transformer is protected against rain, dust, and UV exposure, ensuring stable operation in harsh outdoor environments. It is an ideal power solution for outdoor industrial equipment.
Full Power Rating with Premium Materials
Built with true-rated capacity and high-quality materials, without undersized components or exaggerated specifications. Every unit undergoes strict quality testing to ensure reliable long-term performance.
Premium Materials for Safety & Durability
High-Temperature Enameled Copper Wire
Uses 180°C high-temperature resistant copper winding wire with excellent insulation performance and strong aging resistance, 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 featuring excellent heat dissipation, low core loss, superior magnetic performance, and higher operating efficiency.
Wiring Terminals
Available with high-temperature BT terminals or insulated terminal board wiring solutions. Both provide clean, secure wiring and support customization according to customer requirements.
Accurate Voltage Transformation with Distortion-Free Waveform
High voltage accuracy, fast response speed, and stable performance ensure distortion-free output voltage waveform, providing clean and reliable power protection for sensitive equipment.
Multi-Sided Heat Dissipation Design
The enclosure features multiple ventilation openings for powerful and efficient heat dissipation, reducing transformer operating temperature and ensuring stable continuous operation.
Real-Time Input & Output Voltage Monitoring
Equipped with input and output voltmeters for real-time voltage monitoring, allowing convenient on-site management and easy tracking of operating conditions.


3. Technical Specifications
| Item | Specification |
|---|---|
| Model | SG Outdoor 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. Applications
Designed to provide clean and stable power for:
Imported medical equipment (CT / MRI systems)
CNC machine tools, milling machines, grinding machines, and punch presses
Injection molding machines and laser cutting equipment
Automated production lines and industrial control systems
Outdoor engineering equipment and temporary outdoor power supply applications
5. Customization Services
Custom configurations are available for:
Voltage ratings
Wiring methods
Protective enclosure types
Installation structures
Power capacity specifications
Tailored solutions are available to meet different equipment power supply requirements.
6. Available Ratings & Dimensions
The SG Series is available in standard capacities from 0.5KVA to 300KVA. Some common models, such as 380V/220V/200V configurations, are regularly stocked for fast delivery.
Detailed product dimensions and packaging information can be provided based on specific models. Customized dimensions are also available to fit customer installation space requirements.






