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Brand: Changrongyuan Power Supply
Name: Autotransformer
Model: Customizable
Input Voltage: 380V (can be customized according to actual demand)
Output Voltage: 220V, 200V (can be customized according to actual demand)


Specification Dimensions
| Specification Model (Bare Unit) | Dimensions (cm L×W×H) | Weight (kg) |
| Three-phase Dry-type Transformer SG-10KVA | 23*14*23 | 40 |
| Three-phase Dry-type Transformer SG-15KVA | 30*15*25 | 55 |
| Three-phase Dry-type Transformer SG-20KVA | 30*19*25 | 85 |
| Three-phase Dry-type Transformer SG-30KVA | 36*20*33 | 110 |
| Three-phase Dry-type Transformer SG-40KVA | 36*25*33 | 130 |
| Three-phase Dry-type Transformer SG-50KVA | 42*24*43 | 150 |
| Three-phase Dry-type Transformer SG-60KVA | 42*26*43 | 180 |
| Three-phase Dry-type Transformer SG-80KVA | 46*26*44 | 210 |
| Three-phase Dry-type Transformer SG-100KVA | 46*30*44 | 250 |
Product Introduction
Three-phase autotransformers are transformers professionally manufactured by our company over the years using high-quality materials and advanced process technologies. Various input and output voltages, connection groups, tap positions, winding capacity distribution, secondary winding configuration, and whether an outer casing is required can all be carefully designed and manufactured according to user requirements.
The three-phase autotransformer (bare unit) is made of high-quality imported materials, featuring high performance, low loss and reliable operation. It is suitable for various imported mechanical equipment and electrical equipment requiring special voltages for AC 50/60Hz. Various input and output voltages, connection groups and tap winding capacity distribution of the product can all be carefully designed and manufactured according to user requirements.
Product Features

Energy-saving and Low-noise
Adopts high-quality cold-rolled silicon steel sheet stacking, treated with a special varnish impregnation process, which effectively reduces vibration and noise during operation. The introduction of new processes and technologies such as high-temperature resistant insulating material design makes the transformer more energy-saving and quieter. The coil is provided with ventilation grooves for smooth air flow, effectively lowering the coil temperature.
High Reliability
Reasonable structure, high efficiency, undistorted waveform, convenient and reliable use, capable of long-time continuous operation. Performance indicators fully meet the standard requirements of CE/ICE/IP65 dry-type power transformers.
Environmental Protection Characteristics
It has heat resistance, moisture resistance, stability, chemical compatibility, low-temperature resistance, radiation resistance and non-toxicity.
High Quality
Excellent iron core structure and optimized production design enable the transformer to feature strong overload capacity, strong short-circuit resistance and great insulation capacity under overvoltage conditions.
After-sales Guarantee
1. Our company manufactures and sells various types of transformers, voltage stabilizers and voltage regulators. Custom products can be made according to customers' requirements, dimensions and specifications.
2. The warranty period for dry-type transformers, voltage stabilizers and voltage regulators produced by our company is two years.
3. If any product quality problem occurs within the warranty period, our company is responsible for free repair or replacement.
4. All products sold by our company are 100% genuine without cutting corners. Purchase and sales contracts can be signed by both parties to protect the legitimate rights and interests of consumers.
Energy-saving Benefit Analysis

1. Adopts high-quality cold-rolled silicon steel sheet stacking; treated with a special varnish impregnation process and oven drying! It effectively reduces vibration and noise during operation. The introduction of new processes and technologies such as high-temperature resistant insulating material design makes the transformer more energy-saving and quieter. For energy-saving and low-noise performance, the coil is provided with ventilation grooves for smooth air flow, effectively lowering the coil temperature.
2. Products with outer cabinets are all equipped with casters (for 100KVA and below), voltmeter, ammeter, cooling fan and temperature controller. The fan will start when the transformer temperature exceeds 80°C, and an overtemperature alarm will be triggered (alarm for equipment safety protection when the internal temperature of the transformer exceeds 150°C, this function is available for units above 100KVA).
Applicable Sites
Widely used in industrial, agricultural, transportation, post and telecommunications, military, railway, imported equipment, scientific research and cultural fields, including large electromechanical equipment, metal processing equipment, production lines, construction engineering equipment, elevators, medical devices, embroidery and textile equipment, air conditioners, radio and television, household appliances, lighting and other occasions requiring voltage transformation.
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