Dry Type Power Transformer
Product Introduction:
Product Description:
1.Safe, reliable, and convenient.
2.Low loss, low partial discharge, low noise, and strong heat dissipation ability.
3.Under forced air cooling conditions, it can operate at 150% of its rated load.
4.Good moisture resistance and can operate normally under high humidity.
5.Flame retardant and fire-resistant, pollution-free, can be directly installed in the load center.
6. Maintenance free, easy to install, and low overall operating costs.
Performance characteristics:
Compliant with the 2020 version of the new national energy efficiency standards; Compliant with the 2020 version of Level 1 energy efficiency.
The iron core is made of high-quality high magnetic conductivity grain oriented cold-rolled silicon steel sheets, with 45 degree fully oblique step joints. It adopts a special square tube pull plate structure, and the core columns are tied with insulation tape; The surface is coated with special resin to prevent moisture and rust, effectively reducing no-load losses, no-load currents, and iron core noise.
The high-voltage winding conductor is made of copper wire with F-class insulation, reinforced with long and short cut glass fiber felt as filler, and poured with epoxy resin mixture under vacuum (1-3 mbar). Effectively suppress the occurrence of partial discharge phenomenon, with a partial discharge amount not exceeding 5PC.
The low-voltage coil is made of high-quality foil conductors wound on an automatic foil winding machine, with argon arc protection welding and high welding accuracy; Pre impregnated DMD is used as interlayer insulation, and pre impregnated glass fiber cloth is used for insulation inside and outside. The upper and lower ends are sealed with epoxy resin and then cured as a whole in a curing oven, with good moisture resistance.
IP20 can prevent solids with a diameter greater than 12mm from entering and resist accidental impacts; In addition to the functions of IP20, IP23 can also prevent water droplets from flowing in within a 60 degree angle to the vertical line, making it suitable for outdoor installation and use; Customizable.
The overheat protection device mainly achieves transformer temperature detection and control through PT thermistor embedded in the low-voltage coil. During the operation of the transformer, the circulating display shows the temperature values of the three-phase windings; Display the temperature value of the hottest phase winding; Temperature alarm tripping; Sound and light warning, fan start; Fan overload protection and computer interface.
Functional Positioning for Industrial Power Systems
The dry type transformer is engineered as a reliable component for electrical power transformation in industrial and utility environments. Designed for users including power utilities, electrical contractors, and system integrators, it facilitates safe energy conversion without the hazards of liquid insulation. This power transformer suits installations requiring high operational safety and reduced maintenance, serving as a core device in power distribution, substations, and commercial buildings. Its ability to operate indoors or outdoors with a customizable protective casing enhances its versatility for diverse infrastructure projects, encompassing medium and high voltage applications.
Technical Features Ensuring Efficiency and Durability
Utilizing a fully oblique step joint iron core made from grain-oriented cold-rolled silicon steel sheets, this electrical transformer achieves low no-load losses and minimal acoustic noise. The high-voltage winding features copper conductors with F-class insulation, encapsulated by vacuum epoxy resin casting to suppress partial discharge below 5 pC. Low-voltage coils incorporate precision foil winding sealed with epoxy resin, optimizing moisture resistance and thermal dissipation. The transformer’s embedded PT thermistor enables continuous temperature monitoring with alarm triggers and fan-controlled cooling. These specifications comply with national and international standards, making this a high-efficiency dry type power transformer suitable for critical operational environments.
Deployment in Electrical Substations and Power Distribution Networks
This distribution transformer plays a critical role in electrical substations and power centers where system reliability and efficiency are paramount. Its dry-type design eliminates oil-related fire and environmental risks, granting enhanced safety for densely populated or environmentally sensitive areas. The transformer's robust construction and thermal management suit applications in high humidity and varying climatic conditions, making it ideal for indoor and outdoor installations. It integrates seamlessly with power grid infrastructure, supporting load regulation, noise restrictions, and maintenance protocols common to modern transformers electrical systems.
Product Advantages
Structural and Design Advantages Facilitating Integration
The construction of this dry transformer incorporates advanced 3D parametric modeling with a vacuum casting process, resulting in optimized magnetic flux paths and coil durability. Modular coil winding methods enhance repair and replacement flexibility, a key requirement for power system continuity. The vacuum epoxy casting on the high-voltage coil prevents partial discharge, while the robust iron core design reduces overall core losses. Additionally, the customizable protective casing (IP20 or IP23) ensures environmental adaptability. Such engineering reflects best practices among leading power transformers manufacturers, enabling consistent performance in varied operational conditions.
Performance Reliability and Operational Benefits
This electrical transformers manufacturer delivers a product characterized by low no-load power loss and reduced operational noise, directly improving system efficiency and user comfort. Embedded temperature sensors combined with active fan controls allow real-time thermal management, minimizing overheating risks and extending asset lifespan. Moisture-resistant low-voltage coils reduce degradation in humid environments, thus lowering downtime and maintenance costs. Collectively, these features enhance the dry type transformer’s value proposition for power engineering applications requiring high reliability, consistent output, and compliance with strict safety standards.
Use Scenarios
Application in Electrical Substation Environments
Within electrical substations, this dry type power transformer supports the critical task of voltage regulation and distribution under stringent safety requirements. Its dry-type design eliminates the risk of oil leaks or fire hazards commonly associated with oil-immersed transformers, enabling safer operation in confined or urban substation layouts. The equipment provides efficient energy transfer with low losses while embedded thermal protection ensures operational stability under fluctuating loads. Integration with substation automation systems is facilitated by standardized temperature monitoring outputs, allowing seamless maintenance and fault detection for power system operators handling power transformers and associated grid assets.
Role in Commercial and Industrial Power Distribution
In commercial buildings and industrial power distribution centers, this transformer assures continuous power delivery with minimum downtime. Its robust design is suited for environments exposed to high humidity or temperature variations, common in manufacturing sites and large commercial complexes. The precision-wound coils and vacuum resin encapsulation provide superior insulation and moisture protection, reducing the risk of insulation failure. Additionally, compliance with noise regulations and thermal control protocols makes it ideal for facilities prioritizing environmental safety and operational compliance. This transformer type integrates into complex power distribution networks, ensuring efficient voltage step-down or step-up as required within the system.
Technical parameter table:
Execution standards:
Advanced production technology ensures the reliability of products:
The transformer body adopts a high-temperature resistant mixed insulation system, which effectively solves the problem of temperature field differences in different types of transformer structures and ensures the safety and reliability of the insulation system.
Made of high-quality conductor winding and reinforced with long and short cut glass fiber felt, it is poured under vacuum using the world-class Heinrich vacuum casting system
The robot is fully automatic in laminating, adopting a fully inclined 45 degree 7-step ladder joint structure, which improves the efficiency and quality of transformer laminating.
All products strictly control the production process and quality links, and undergo strict testing and inspection according to national standards and customer customized requirements before leaving the factory, including partial discharge inspection, lightning impact resistance inspection, noise inspection and other necessary inspection items. Advanced testing equipment and a comprehensive inspection and testing system ensure the high quality and excellence of the products.
Dry type power transformers have been successfully applied in Beijing Olympic venues, ensuring stable and efficient operation at every moment. From the glorious arena to the behind the scenes guarantee, injecting inexhaustible power into the Olympic dream with excellent quality, and letting the world witness the extraordinary strength of Chinese manufacturing!
Ordering Notice:
We are willing to serve you with our professionalism, sincerity, and integrity.
FAQ
What materials are used in the Dry Type Power Transformer construction?
The dry type transformer features an iron core made from grain-oriented cold-rolled silicon steel sheets with 45° fully oblique step joints. Its high-voltage coil uses copper with F-class insulation and vacuum epoxy resin casting, ensuring low losses and high durability for reliable power transformation.
Can the protective casing of the transformer be customized?
Yes, the transformer’s protective casing can be tailored to meet IP20 for indoor use or IP23 for outdoor environments. This flexibility ensures the power transformer suits various installation conditions while maintaining safety and moisture resistance.
How is the transformer cooled and protected from overheating?
The transformer incorporates embedded PT thermistors for temperature monitoring, which trigger alarms and activate fan cooling systems to prevent overheating. This active protection helps maintain safe operation and extends the service life of the dry type transformer.
What are the typical lead times and how can I order a transformer?
Lead times for the electrical transformer are not specified publicly. Prospective buyers should contact Shanghai Zhiyou’s sales team directly for up-to-date delivery schedules and customized options, ensuring a tailored solution matching project requirements.
