S11 Series 6kV-35kV Off Circuit Tap Changer power Transformer

Product Description
The products implement the National Standard GB1094-2013 Power Transformer and GB / T6451-2015 Three-phase Oil-immersed Power Transformer Technical Parameters and Requirements, and are recommended as the major equipment products for the national urban and rural power grid construction and retrofit by the State Economic and Trade Commission.
S11 series transformer adopts high quality material for copper winding, especially applying the new technology and new material for the coil insulation and active parts, thus the no-load and the load loss are obviously reduced, the performance and structure are more reliable and superior.

Product Features
●Good Economic Performance 
The no-load loss for S11 series products decreased 10.3% averagely, no-load current decreased 22.4% based on S9 series.
●Long Service Life
Transformer tank adopts hermetical structure, tank and tank cover can be connected by bolts or welded firmly, the transformer oil won’t contact with air, so that extend the service life effectively.
●High Operation Reliability
Improve the relevant sealing parts for the tank, increase the reliability and advance the technical level to ensure the reliability of the seal.
●Small Installation Area
S11-M series transformer tank uses the corrugated plate radiator. When the oil temperature changes, the corrugated plate will proceed thermal expansion, which can replace the role of the oil conservator. the corrugated plate tank has beautiful appearance, less occupied area.

Table 1: 6Kv, 10kV & 30kVA-2500kVA Power Transformer With Off Circuit Tap Changer

Notes:
1.The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.
2.For the transformer of rated capacity up to 500kVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11 or Yzn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.

Technical Parameter for S11 Series 20kV Power Transformer With Off Circuit Tap Changer

Notes:
1.The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.
2.For the transformer of rated capacity up to 500kVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11 or Yzn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.
3.The performance parameters in the table are also applicable for HV with dual voltage 20 (10)kV three-phase transformer.

Technical Parameter for S11 Series 35kV Power Transformer With Off Circuit Tap Changer

Notes:
1.The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.
2.For the transformer of rated capacity up to 500KVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.

S11 Series 35kV 630kVA-31500kVA Three-phase Dual Winding Power Transformer With Off Circuit Tap Changer

Note: 1: For the transformer of low voltage 10.5kV, the connection group symbol is applicable to Dyn11.
Note: 2: For the transformer of rated capacity 3150kVA or above, the -5% tapping position is for maximum current tap.
Note: 3: When the annual average load rate for the transformer is between 35% to 45%, the loss value in the table can obtain the highest operational efficiency.

Baoding Zhongyi Electrical material Manufacturing Co., Ltd. is located at the beautiful Baiyangdian Science and Technology Town in Baoding City, with an advantageous geographical location and convenient transportation. Our company covers an area of 30,000 square meters, the building area of 16,000 square meters. The registered capital of the company is RMB 81,000,000.
The company mainly produces: Oil immersed power transformers, dry-type transformers, packaged substation(prefabricated substation and pad-mounted transformer), high and low voltage switchgear assembly and a variety of special transformers. There are complete necessary production and testing equipments. Our company has passed the ISO9001-2015 international standard quality management system certification. All performance indicators of the products have reached the relevant national standards and international standards.
The oil immersed power transformers and dry-type transformers have passed the Test Report of the National Supervision and Inspection Center for Energy-saving Product Quality; Complete sets of low voltage switchgear (GGD2) (GCK) has passed the test of China Compulsion Certification (CCC) from the State Bureau of Quality and Technical Supervision for Electrical Products; Indoor AC draw-out type metal clad switchgear KYN28A-12 / 1250-31.5, fixed AC metal-enclosed Ring unit XGN15-12 / 1250-31.5 and XGN15 metal-enclosed switchgears have passed the test of the National Quality Supervision and Inspection center for High-voltage Electrical Appliances Product .
Our company's products are widely used in different industries, such as power plants, chemicals, construction, mining, metallurgy, rail transportation and so on, meeting the demands of various users.
Baoding Zhongyi Electrical Material Manufacturing Co., Ltd. follows the enterprise purpose of the "details determine the success or failure, integrity casts the future", abides by the business philosophy of the "integrity based, to be innovative ambitious", we’ll always treat our customers warmly and provide qualified products and service to your satisfaction.