250kVA Dry Type Cast Resin Three Phase Step Down Electric Power Distribution Transmission Transformer 250kVA

Product Description

Our Advantages

Jiangsu XinHong Electrical Equipment Co., Ltd. is a large-scale enterprise integrating research and development, manufacturing, trade, and service functions, with industrial electrical equipment as its main focus. Its main products cover the following major categories:

Power Transformers , Electronic Transformer , Electric Transformer , Oil Immersed Transformer , Distribution Transformer ,Dry Type Transformer
Power transformers are key devices in power systems for transforming voltage and transmitting electric energy. The power transformers produced by Jiangsu Xinhong Electrical Equipment Co., Ltd. feature high efficiency, low losses, and high reliability. They are widely used in various power systems, industrial enterprises, and new energy projects, effectively enhancing the stability and safety of electric power transmission.

High and Low Voltage Complete Sets of Equipment
High and low voltage complete sets of equipment are important devices in power systems for distributing, controlling, and protecting electric energy. The company's high and low voltage complete sets of equipment include switchgear cabinets and distribution cabinets. These products are compact in structure, stable in performance, and easy to operate, meeting the needs of different users. They are widely used in industrial, commercial, and residential building fields.

Container-Type Substations
Container-type substations are factory-prefabricated, compact indoor and outdoor distribution equipment that integrates high-voltage switchgear, power transformers, and low-voltage distribution devices according to certain wiring schemes. The container-type substations produced by Jiangsu Xinhong Electrical Equipment Co., Ltd. have the advantages of small size, easy installation, reliable operation, and simple maintenance. They are suitable for urban power grid transformation, residential areas, commercial centers, industrial enterprises, and other places.

Prefabricated Cabin-Type Substations
Prefabricated cabin-type substations are a new type of substation with the advantages of short construction period, small land occupation, and strong environmental adaptability. The prefabricated cabin-type substations produced by Jiangsu Xinhong Electrical Equipment Co., Ltd. adopt advanced design concepts and manufacturing processes, meeting the needs of different environments and application scenarios. They are widely used in new energy power generation, urban rail transit, industrial parks, and other fields.

High and Low Voltage Harmonic Control Devices
With the continuous development of power systems, harmonic problems are becoming increasingly prominent, severely affecting the safe operation of power equipment and electric power quality. The high and low voltage harmonic control devices produced by Jiangsu Xinhong Electrical Equipment Co., Ltd. can effectively suppress harmonics in power systems, improve electric power quality, and ensure the stable operation of power equipment. They are suitable for various industrial enterprises and power systems.

Jiangsu Xinhong Electrical Equipment Co., Ltd. has won a good reputation and extensive market recognition in the field of electrical equipment with its advanced technology, high-quality products, and comprehensive after-sales service.

Product Description

 

• Oil-Free Design: The most significant feature of a dry-type transformer is the absence of an oil tank and insulating oil. Its insulation and cooling medium is air or an insulating gas. This design offers substantial advantages in fire prevention and explosion protection, making it particularly suitable for use in places with high fire protection requirements and dense populations, such as high-rise buildings, underground facilities, hospitals, and schools.
• Winding Structure: Typically, the windings are treated with epoxy resin casting or vacuum pressure impregnation processes, which endow the windings with high mechanical and electrical strength. This structure effectively prevents the windings from moisture absorption, deformation, and insulation aging, thereby enhancing the reliability and service life of the transformer.
   

  Performance Features

• Good Fire-Resistance: With no oil present, there is no risk of oil leakage or combustion, significantly reducing fire hazards and meeting the fire protection requirements of modern buildings and industrial sites for electrical equipment.
• Excellent Heat Dissipation: Dry-type transformers generally use natural air cooling (AN) or forced air cooling (AF) for heat dissipation. In natural cooling, heat is carried away by air convection; in forced air cooling, fans are used to force air flow, accelerating heat dissipation and ensuring the transformer can operate stably at rated load for a long time.
• High Insulation Performance: Advanced insulating materials and processes, such as glass fiber-reinforced epoxy resin, are employed, providing excellent electrical insulation. These materials can withstand high voltage levels and effectively prevent insulation breakdown.
• Strong Short-Circuit Withstanding Capability: The compact winding structure and high mechanical strength enable the transformer to withstand significant short-circuit currents without deformation or damage during short-circuit impacts, enhancing its short-circuit resistance and reducing equipment damage and power outages caused by short-circuit faults.

Environmental Features

• Pollution-Free: The absence of insulating oil means no risk of oil leakage or pollution to the environment, making it an environmentally friendly device that meets green requirements.
• Low Noise: During operation, the noise level is relatively low, generally around 50-60 decibels, causing minimal noise interference to the surrounding environment and personnel. This makes it suitable for use in places with strict noise requirements.

Maintenance Features

• Maintenance-Free or Low-Maintenance: The simple structure of dry-type transformers eliminates the need for oil tank and oil maintenance. Routine maintenance is minimal, mainly involving basic cleaning, inspection, and tightening tasks, reducing maintenance costs and workload.
• Easy Installation: The relatively small size and light weight of dry-type transformers make them easy to install. They can be arranged flexibly according to the available space on site, without the need for the large space required for oil tank installation and oil heat dissipation in oil-immersed transformers.

  

  

  

   

  Product Parameters

parameter term	parameter values
rated voltage	Various specifications available, such as 20KV, 10KV, 6KV, etc.
Capacity range	Various specifications are available, such as 500KVA, 630KVA, 800KVA, 1250KVA, etc.
Cooling Method	Natural air-cooled/forced air-cooled (according to specific models)
Insulation material	Epoxy resin or other high-performance insulating materials
Protection class	IPXX (according to the specific model, need to mark the specific level)
Winding type	Foil winding structure (low voltage) / "trapezoidal" segmented layer structure (high voltage)
Core material	High quality cold rolled grain oriented silicon steel sheet

 

Technical Data Sheet for 6KV, 10KV Class 10 Dry Type Non-Excited Regulated Distribution Transformer

nominal capacity	Connection  group labeling	Voltage combination	No-load  current	No- load loss	Load Losses at Different Insulation Thermal Ratings			Short Circuit  Impedance
					B(100ºC)	F(120ºC)	H(145ºC)
30KVA	Yyn0 Dyn11	6-11±2×2.5%/0.4	2.1	190	670	710	760	4.0
50KVA			2.1	270	940	1000	1070	4.0
80KVA			1.6	370	1290	1380	1480	4.0
100KVA			1.6	400	1480	1570	1690	4.0
125KVA			1.5	470	1740	1850	1980	4.0
160KVA			1.5	540	2000	2130	2280	4.0
200KVA			1.3	620	2370	2530	2710	4.0
250KVA			1.3	720	2590	2760	2960	4.0
315KVA			1.1	880	3270	3470	3730	4.0
400KVA			1.1	980	3750	3990	4280	4.0
500KVA			1.1	1160	4590	4880	5230	4.0
630KVA			0.9	1340	5530	5880	6290	4.0
630KVA			0.9	1300	5610	5960	6400	6.0
800KVA			0.9	1520	6550	6960	7460	6.0
1000KVA			0.9	1770	7650	8130	8760	6.0
1250KVA			0.9	2090	9100	9690	10370	6.0
1600KVA			0.9	2450	11050	11730	12580	6.0
2000KVA			0.9	3050	13600	14450	15560	6.0
2500KVA			0.7	3600	16150	17170	18450	6.0

 

Understanding the Basic Structure of a Dry-Type Transformer: An Engineering Marvel.
1. Iron Core: Formed from silicon steel sheets, this vital magnetic circuit component guides magnetic flux with precision.
2. Winding: Featuring high-voltage and low-voltage windings meticulously wrapped around the iron core to facilitate seamless energy conversion and transmission.
3. Insulating Cylinder: Strategically positioned between high and low voltage coils, enhancing electrical insulation and ensuring the reliable operation of the transformer.
4. Pads: Engineered to support and stabilize coils, maintaining their structural integrity and performance.
5. Fasteners: Integral for securely connecting and fixing transformer components, designed with superior anti-loosening capabilities.

Company Profile

Welcome to Jiangsu Xin Hong transformer manufacturing facility, where innovation meets tradition to deliver the highest quality power transformers for a wide range of applications.  Established with a vision to revolutionize the power transmission industry, our factory has grown to become a leading name in the production of reliable, efficient, and environmentally friendly transformers.  Our journey is marked by continuous improvement, technological advancement, and a deep commitment to customer satisfaction.

Our factory is equipped with four specialized workshops, each dedicated to different stages of transformer production. This setup allows us to handle everything from core manufacturing to final assembly and testing under one roof. Our production lines are capable of producing transformers with rated capacities ranging from 50kVA to an impressive 3000kVA. Whether it's a small distribution transformer for residential use or a large power transformer for industrial applications, we have the capacity and expertise to meet diverse needs.
From adjusting voltage levels to modifying the physical dimensions of the transformer, our team of engineers works closely with clients to deliver transformers that perfectly fit their specifications.  Our flexible production lines can quickly adapt to different orders, ensuring that each customer receives a product tailored to their exact needs.

After Sales Service

We offer comprehensive pre-sales consultation and tailored program design services.

Enjoy free repair or replacement for any faults due to product quality during the warranty period.
Benefit from lifelong technical support and after-sales service, ensuring peace of mind.

 

Packaging & Shipping

 

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FAQ

1. Are you a trading company or a manufacturer?
We are a distinguished factory with over 10 years of expertise in high and low voltage switchgears, substations, transformers, cable distribution boxes, and various electrical equipment, including vacuum circuit breakers and load break switches.
Proudly, our factory is an outstanding supplier to the State Grid Corporation of China.
2. Do you accept customized services?
We offer comprehensive OEM/ODM services, including logo printing on products. Our expert technical and quotation team ensures satisfaction by crafting projects tailored to your drawings and specifications.
3. What is your MOQ?
Our minimum order quantity is set at an incredibly accommodating 1 piece, ensuring flexibility and ease for our valued customers.
4. How long is your delivery lead time?
The delivery lead time can vary based on your specific product requirements and order quantity. However, we typically ensure swift dispatch within 5 to 10 working days.
5. How do you address and resolve quality issues?
Please provide comprehensive photographs showcasing the quality issues. Our adept technical and quality testing departments will conduct an in-depth analysis, promising a satisfying resolution within just 2 days.
6. What are your payment terms?
Our payment terms are structured for your convenience: an initial 30% T/T in advance, with the remaining 70% due prior to shipment. We also accept payment through Western Union and L/C.