Shanghai Dry-Type Transformer Recycling. Second-hand Power Transformer Recycling. Professional recycling of resin-insulated dry-type transformers, Shanghai Junzhou Renewable Resources Recycling Co., Ltd., is a service center with years of experience in material recycling, integrating collection, classification, processing, and sales into a comprehensive service center. We have a professional team for on-site operations, certified personnel, reasonable, safe, and efficient services. Since its establishment in 2002, the company has many successful cases. Starting from the actual needs of enterprises and institutions, we aim to effectively integrate the material market through the establishment of this online platform, enabling the rational circulation and scientific reuse of renewable resources. The future development of the website depends on your support and care, and we sincerely thank you for your active participation and support. At the same time, we hope you can provide valuable suggestions for this site. Shanghai Junzhou Waste Material Recycling Co., Ltd. is willing to work together with customers to create a better future. Business scope: Enterprise asset disposal and recycling, demolition projects, bidding and tendering (Jiangsu, Shandong, Anhui, Zhejiang, Fujian, Jiangxi, Henan, Shanghai, and the Yangtze River Delta region), second-hand equipment recycling, entire factory equipment recycling; recycling second-hand power equipment, smelting equipment, generator sets, air conditioning units, industrial equipment, mechanical equipment, electrical/wiring equipment, telecommunications equipment; second-hand air conditioners, wires and cables; specializing in asset disposal and recycling bidding for various large enterprises and institutions, as well as overall contracting for demolition projects.

Transformer recycling in Jiangsu, Zhejiang, Shanghai, and Anhui, various special dry-type transformers, box-type transformers, oil-immersed transformers, rectifier transformers, power transformers, furnace transformers, combined transformers, etc. Recycled brands include Siemens, EKEA, Yijia, Xinying, Jingsai, Langtening, LNBRT, Leishi, Xingwodun, Anbian, Daquan, Huapeng, Huayu, Yikai, Chint, and other domestic and imported transformer brands. The company long-term offers high-price cash on-site recycling services to individuals and enterprises, welcome new and old customers to call.
Transformer Models and Technical Parameters
A transformer is an electrical component used to change voltage, current, or impedance, and is the main equipment for power transmission and distribution in the power system. Its physical appearance is shown in Figure 1-1.
For long-distance power transmission, transformers can be used to increase the voltage sent from power stations to reduce losses during power transmission, facilitating long-distance power delivery; at the point of use, transformers step down high voltage for use by electrical equipment and users. There are many ways to classify transformers, but based on the number of power phases, they are mainly divided into single-phase transformers and three-phase transformers.
Functional Characteristics of Single-Phase Transformers
A single-phase transformer is a transformer with a single-phase primary winding. As shown in Figure 1-2, both the primary and secondary windings of a single-phase transformer are wound around an iron core. The primary winding is the AC voltage input terminal, and the secondary winding is the AC voltage output terminal. The output voltage of the secondary winding is proportional to the number of coil turns.
Single-phase transformers can convert high-voltage power supply into single-phase low voltage for various equipment, such as stepping down 6600V AC high voltage to 220V AC low voltage through a single-phase transformer to power lighting or other equipment, as shown in Figure 1-3. Single-phase transformers have advantages such as simple structure, small size, and low losses, making them suitable for use in low-voltage distribution lines with light loads (below 60Hz). Single-phase transformers are widely used in rural power transmission and distribution systems, as well as for lighting or small motor power supply, as shown in Figure 1-4. Additionally, they are often used as power transformers in many electronic and electrical devices.
Functional Characteristics of Three-Phase Resin-Insulated Dry-Type Transformers
Resin-cast transformers are one of the most commonly used transformers in power equipment. A three-phase transformer is essentially composed of three single-phase transformers of the same capacity. The primary winding (high-voltage coil) is three-phase, and the secondary winding (low-voltage coil) is also three-phase, as shown in Figure 1-5.
Epoxy resin dry-type transformers are mainly used for stepping up or stepping down voltage in three-phase power supply systems. The most common application is stepping down several thousand volts of high voltage to 380V low voltage to provide power for electrical equipment, as shown in Figure 1-6.
Power transformers have a wide range of applications, such as in substations, industrial and mining enterprises, construction sites, irrigation and drainage equipment, postal and telecommunications, textiles, railways, schools, hospitals, national defense, elevators, etc. They are also suitable for low-voltage distribution lines with low and fluctuating power supply voltage. Their application examples are shown in Figure 1-7.
II. Transformer Models and Technical Parameters
Power transformers are the most widely used in electrical systems. Due to the variety of power transformers, their model identifications and parameters differ, so these models and parameters are often indicated on the transformer's nameplate for easy reference during installation and maintenance. Figure 1-8 shows the nameplate identification of a typical power transformer.
On the transformer's nameplate, the model and technical parameters of the transformer are indicated. Below, the meaning of the transformer model and its technical parameters are introduced.