Product Overview
The SG Series Three-phase Air-immersed Transformer is a natural cooling indoor transformer designed for AC 50Hz~60Hz circuits up to 1000V. It provides reliable control power for machine tools, mechanical equipment, small power applications, work lighting, and signal lamps.
Main Features
- Two Body Types Available: Exposed type for controlled environments and fence type with protective steel shell for added safety
- Low Power Consumption: Designed for energy efficiency with minimal losses
- Low Noise Operation: Quiet performance suitable for indoor installations
- Fire Resistant: Air-immersed design eliminates oil, reducing fire hazards
- Pollution Free: Environmentally friendly with no oil or hazardous materials
- Enhanced Models: Capacity ≥80kVA includes cooling fans, ammeter, voltmeter, and wheels for easy mobility
- Customizable: Input/output voltages, enclosure types, and connection configurations (Y/Δ) can be tailored to requirements
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | ≤ 1000V |
| Rated Capacity | 0.15kVA ~ 300kVA |
| Input/Output Voltage | 200V/120V, 380V/220V (customizable) |
| Rated Frequency | 50Hz ~ 60Hz |
| Connection Type | Yyno (Y/Yo), Dd (Δ/Δ), Dy (Δ/Y) |
| Ambient Temperature | -5°C ~ +40°C |
| Altitude | ≤ 2000m |
| Relative Humidity | < 95% |
| Cooling Method | Natural Air Cooling (AN) |
| Protection Class | Exposed / Fence Type |
Technical and Application Notes
The SG transformer features an air-immersed (dry-type) design that provides efficient heat dissipation without the need for oil. This makes it ideal for indoor installations where fire safety and environmental concerns are paramount. The natural cooling system ensures reliable operation while minimizing maintenance requirements.
For installations requiring input current above 300A, special design adjustments are necessary. Please consult with our technical team for custom specifications.
Typical Applications
- Machine tool control systems
- Mechanical equipment power distribution
- Industrial lighting circuits
- Signal lamp power supplies
- Control power for automation systems
- Small power distribution
Ordering Support
When ordering SG series transformers, please specify:
- Required capacity (kVA)
- Input and output voltage ratings
- Enclosure type (exposed or fence)
- Connection configuration (Y/Δ)
- Any special requirements (wheels, meters, fans for ≥80kVA)
Custom voltage combinations are available upon request.
Product Catalog
For detailed technical drawings, dimensions, and additional specifications, please refer to the product catalog below.
