Product features
Winding material: all-copper enameled wire to ensure high efficiency and durability.
Insulation grade: H grade, using DMD epoxy prepreg paper impregnated with epoxy resin for baking, with excellent high temperature resistance.
Structure: three-winding, core-type iron core, EI type iron core structure, suitable for various industrial applications.
High efficiency performance: efficiency up to 98.4%, ensuring energy-saving and stable operation.
Customization service: provide processing customization options to meet the needs of different customers.
This series of autotransformers has wide adaptability and high cost performance, and is an ideal choice for mechanical equipment and CNC equipment.
Type designation
| MODEL: □SG□ | |
| □ | None: lsolation, Q: Autocoupling |
| S | S: three-phase |
| G | Dry-type transformer |
| □ | Power KVA |
Main technical parameter
Dimensions with housing
| Model NO. | QSG |
| Capacity | 10KVA 15KVA 20KVA 25KVA 30KVA 50KVA 80KVA 100KVA |
| Phase | 3 phase |
| Voltage Accuracy | ±1% |
| Voltage variation rate | ≤1.5% |
| Waveform Distortion | No distortion (compared to input waveform) |
| Insulation Grade | Class F,High Temperature Resistance 150° |
| Efficiency | Inductive (Isolated) ≥99% |
| Resistance to Electricity | 2000VA/1min |
| Overload capacity | Allowed to exceed 1.2 times rated load |
| Cooling method | Dry air-cooled |
| Connection method | Y/△ combination |
Product specifications
| MODEL | Input voltage | Output voltage | Measurement(mm) Length*Width*Height |
| QSG-10KVA | Default 600V 440V 380V 220V (customizable voltage) | Default 600V 440V 415V 400V 380V 220V 110V (customized voltage) | 350*460*420 |
| QSG-12KVA | 350*460*450 | ||
| QSG-15KVA | 350*460*450 | ||
| QSG-20KVA | 370*500*500 | ||
| QSG-25KVA | 370*500*500 | ||
| QSG-30KVA | 370*500*500 | ||
| QSG-50KVA | 430*560*560 | ||
| QSG-80KVA | 580*460*630 | ||
| QSG-100KVA | 730*480*780 |
Product analysis
① Input Voltage |
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What is an autotransformer?
An autotransformer is a special type of transformer that works similarly to a traditional transformer. Based on the principle of electromagnetic induction, its primary and secondary windings share a part of the winding and are coupled through direct electrical connection to achieve voltage conversion. This design makes the autotransformer smaller and more efficient than traditional transformers, with lower losses and temperature rise.
Autotransformers are widely used in communication equipment, power substation, industry and transportation. Depending on the design, autotransformers can be divided into adjustable voltage type and fixed type.
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