Overview
Our company has used high quality and advanced technology and technology to produce 160VA to 600kVA for many years. SG series three phase dry transformer,is the latest research and development of the similar products of our company’s SIEMENScompany,especially the three phase dry voltage transformer of 160VA-16kVA, their shape and size have already been installed. Standardization,and SIEMENS 4AP series general,products meet VDE0550, IEC439, JB5555, GB2226 and other international and national standards. The SG series three phase dry type transformers are widely applied to all kinds of three-phase power supply occasions with AC50~60Hz and input and output voltages not exceeding 500V. The input and output of the product,the voltage of the output,theconnection group,the number and position of the adjusting tap, the distribution of the winding capacity, the allocation of the secondary single-phase winding, the use of the rectifying circuit,and the request of the shell, can be carefully designed andmanufactured according to the requirements of the user.
Application
It can be widely used in imported precision machinery and equipment, laser cutting machines, CNC punching machines, bending machines, CNC machine tools, multi-function automatic lathes, spring equipment, injection molding machinery, spindle motors and power supply for export equipment.
Product features
- Power 100%
- High flame retardancy
- Easy to install
- Long life
- Level 180°C
- Energy-efficient
Model and description

Technical Parameters
| Item | Specification |
|---|---|
| Product Name | Three-phase dry type transformer |
| Model | SG |
| Rated Capacity | 15–600 kVA |
| Input Voltage | 380 V (customizable within 600 V) |
| Output Voltage | 200 V / 220 V (customizable within 600 V) |
| Phase System | Three-phase, four-wire system |
| Efficiency | ≥98% |
| Operating Frequency | 50–60 Hz |
| Overload Capacity | 300% for 1 minute |
| Dielectric Withstand Voltage | 2500 V for 1 minute, no breakdown |
| Insulation Class | Class B (130°C) |
| Waveform Distortion | True sine wave, no waveform distortion |
| Connection Mode | Yyn or △ / △ ; △ / Y ; Y / Y0 |
| Protection Grade | IP20 |
| Operating Temperature | −20°C to +40°C |
| Cooling Method | AN / AF |
Working principle


