Oil Immersed Distribution Transformer With Stainless Steel Enclosure & Fan Cooling System

Jiangsu Tianhua Transformer Co. Ltd. Is a high-tech enterprise specialized in the production, development and sales of transformers and related products. Company is located in the second largest city in Jiangsu province, national comprehensive transportation hub, east China important science and education, culture, finance, tourism, health care, convention and exhibition center, important economic, commercial and trade center in Jiangsu province, Xuzhou city, the Beijing-shanghai railway and the Longhai railway in this intersection, the Eurasian continental bridge traverses of Xuzhou, the transportation is extremely convenient.
    The total investment of the company is 258 million Yuan, with registered capital of 55 million Yuan. The company has 270 employees, including 7 senior engineers.More than 110 senior technical personnel such as doctor and master degree.Since the company was founded, strictly follow the ISO9000 quality management system And provide customers with excellent quality products that meet the characteristics of each region.
    We cooperate with our customer with advanced technology, first-class equipment, excellent quality, satisfactory service and good reputation,seek common development, sincerely welcome people from all walks of life to come to my company to discuss cooperation, create brilliant!
   Customers: to provide customers with professional products and services of high quality and maximum value to win customers' understanding, respect and support with sincerity and strength.
   Employees: trust employees' efforts and dedication, acknowledge their employees' achievements and provide corresponding returns, and create a good working environment and development prospects for their employees.
   Market: to reduce procurement costs and risks for customers, and provide real guarantee for customer investment.
   Development: pursue sustainable development goals and build on customer satisfaction.
 Enterprise spirit: self-confidence, self-discipline, self-reliance and self-improvement.
1.Q: Are you manufacturer?
   A: Yes, we are manufacturer.
2.Q: Can I get guarantee of products?
   A:  Yes, every product is 1 year quality warrantee under customer correct using the products.
3.Q: Do you have any Certificate?
   A: Yes. Each of our unit has CE, 3C and KEMA certificate. If you need any other Certificate, we can help you to apply it.
4.Q: How can I pay you?
   A: Pay by T/T and  L/C is acceptable.
5.Q: What about the production?
   A: In general,  it take 4~6weeks and it depend on the different style.

Definition & Structure

An oil-immersed transformer is a common power equipment that performs critical tasks such as voltage conversion and power distribution in electrical grids. It is widely used in urban/rural power grid upgrades, industrial/mining applications, combined transformers, and prefabricated substations.

Key components include:

1.Core: Laminated from high-permeability silicon steel sheets to form a closed magnetic circuit.
2.Windings: Made of copper or aluminum wire, serving as conductive loops wound around the core.
3.Tank: Houses insulating oil and supports other components.
4.Conservator (Oil Expension Tank): Compensates for oil volume changes.
5.Breather: Prevents moisture ingress.
6.Pressure Relief Device (Explosion Vent): Releases excessive internal pressure.
7.Radiators: Enhance heat dissipation.
8.Bushings: Provide external insulation for terminals.
9.Tap Changer: Adjusts voltage ratio.
10.Buchholz Relay: Detects internal faults.
11.Temperature Gauge & Oil Purifier: Monitor and maintain oil quality.
12.Oil :Serves as the primary insulation and cooling medium.

Performance Features

1. High Efficiency & Energy Savings:
Laminated core with minimal air gaps reduces losses and noise.
Near-circular core cross-section improves three-phase balance and lowers harmonic distortion.
2. Enhanced Reliability:
Oil penetrates silicon steel layers, damping noise.
Sealed construction protects insulation from environmental factors.
3. Strong Load Adaptability:
Adjusts input/output currents to meet varying load demands.

Cooling Methods

1.Oil-Natural Air-Natural (ONAN): Relies on natural oil convection.
2.Oil-Natural Air-Forced (ONAF): Adds fans to cool tank and pipes.
3.Oil-Forced Air-Forced (OFAF): Uses pumps to circulate oil through external coolers.

Insulation Structure

1.Internal Insulation:(1)Main Insulation: Oil-paper barriers isolate windings from grounded parts/other windings.
(2)Longitudinal Insulation: Separates sections within the same winding.
2.External Insulation: Bushings insulate terminals from ground/each other.

Operational Parameters

1.Temperature Limits:
Top oil temperature ≤ 90°C (85°C recommended for longevity).
Alarm triggers at 80°C.
2.Overload Capacity:
Permits 1.1-1.2× rated current during emergencies.
Monitor load/temperature post-alarm; reduce load if necessary.

Advantages.

Oil-immersed transformers are suitable for various power grid scenarios, featuring excellent structure and performance. They efficiently convert and distribute electrical energy, ensuring stable and secure power supply.

Product Parameter:

Jiangsu Tianhua Transformer Co. Ltd. Is a high-tech enterprise specialized in the production, development and sales of transformers and related products. Company is located in the second largest city in Jiangsu province, national comprehensive transportation hub, east China important science and education, culture, finance, tourism, health care, convention and exhibition center, important economic, commercial and trade center in Jiangsu province, Xuzhou city, the Beijing-Shanghai railway and the Longhai railway in this intersection, the Eurasian continental bridge traverses of Xuzhou, the transportation is extremely convenient.

The total investment of the company is 258 million Yuan, with registered capital of 55 million Yuan. The company has 270 employees, including 7 senior engineers. More than 110 senior technical personnel such as doctor and master degree. Since the company was founded, strictly follow the ISO9000 quality management system And provide customers with excellent quality products that meet the characteristics of each region.

     Jiangsu Tianhua Transformer Co. Ltd. Is a high-tech enterprise specialized in the production, development and sales of transformers and related products. Company is located in the second largest city in Jiangsu province, national comprehensive transportation hub, east China important science and education, culture, finance, tourism, health care, convention and exhibition center, important economic, commercial and trade center in Jiangsu province, Xuzhou city, the Beijing-shanghai railway and the Longhai railway in this intersection, the Eurasian continental bridge traverses of Xuzhou, the transportation is extremely convenient.
    The total investment of the company is 258 million Yuan, with registered capital of 55 million Yuan. The company has 270 employees, including 7 senior engineers.More than 110 senior technical personnel such as doctor and master degree.Since the company was founded, strictly follow the ISO9000 quality management system And provide customers with excellent quality products that meet the characteristics of each region.
    We cooperate with our customer with advanced technology, first-class equipment, excellent quality, satisfactory service and good reputation,seek common development, sincerely welcome people from all walks of life to come to my company to discuss cooperation, create brilliant!
   Customers: to provide customers with professional products and services of high quality and maximum value to win customers' understanding, respect and support with sincerity and strength.
   Employees: trust employees' efforts and dedication, acknowledge their employees' achievements and provide corresponding returns, and create a good working environment and development prospects for their employees.
   Market: to reduce procurement costs and risks for customers, and provide real guarantee for customer investment.
   Development: pursue sustainable development goals and build on customer satisfaction.
 Enterprise spirit: self-confidence, self-discipline, self-reliance and self-improvement.