High Quality Three Phase Oil Immersed Transformer

S9 is a three-phase oil-immersed distribution transformer with mature structure, low cost and reliable performance. It is maintenance-free, mainly used for old power grids, rural distribution, small industrial mines and temporary power supply.

Model Meaning

· S: Three-phase oil-immersed

· 9: Design series

Key Parameters(Customizable)

· Rated Capacity: 30kVA～2500kVA

· Voltage Combination: 10±5%/0.4kV

· Tap Changer: Off-circuit tap changer

· Cooling Mode: ONAN

· Connection Group: Dyn11 / Yyn0

· Structure: Fully sealed corrugated tank

Product Features

1. Mature structure, stable and reliable

2. Fully sealed, maintenance-free and leak-proof

3. Strong short-circuit withstand capability

4. Low cost, high versatility, easy maintenance

Application Scenarios

· Rural power grid, old residential areas

· Small factories, mines, temporary power supply

· Old equipment replacement and reconstruction projects

Product Specification

·  Rated Capacity: 30kVA～2500kVA

·  Voltage: 10±5%/0.4kV

·  Tap Changer: Off-circuit tap changer

·  Cooling Mode: ONAN

·  Connection Group: Dyn11 / Yyn0

·  Insulation Class: Class A

·  Structure: Fully sealed corrugated tank

Key Features

·  Mature structure, stable and reliable operation

·  Fully sealed, maintenance-free and leak-proof

·  Strong short-circuit withstand capability

·  Low cost, good versatility and easy maintenance

Application Scenarios

· Rural power grid, power supply for old residential areas

· Small factories, mines, temporary power supply

· Replacement of old equipment, reconstruction of existing projects

About Us

Xinda Transformer Co., Ltd. is located at No. 38, Jinsan Road, Fenghuang Industrial Park, Dongchangfu District, Liaocheng City, Shandong Province, China. The company has a registered capital of RMB 150 million and covers an area of approximately 186,667 square meters (280 mu). It is recognized as a National High-Tech Enterprise, a Shandong Province Technology Innovation Demonstration Enterprise, an Excellent Private Technology Enterprise of Shandong Province, a Shandong Model Base for Employment of the Disabled, a Shandong Province Contract-Honoring and Trustworthy Enterprise, a Liaocheng Municipal Enterprise Technology Center, an Excellent Industrial Enterprise of Dongchangfu District, a Science and Technology Innovation Demonstration Enterprise of Dongchangfu District, and a Key Backbone Enterprise of Dongchangfu District.

The annual production capacity is 9,000 MVA. The total construction area of office buildings, R&D facilities, and standardized workshops is 53,000 square meters. Equipped with over 470 sets of advanced production equipment, the company possesses a manufacturing capacity of 10,000 MVA for transformers up to 220 kV, along with complementary switchgear systems. With qualifications in Power Engineering General Contracting and a dedicated technical construction team, Xinda ranks among the leading power transformer manufacturers in China, excelling in R&D, manufacturing, and integrated engineering services.