Step Down 3 Phase Oil Immersed Power Distribution Transformer
|FOB Price:||US $3,300-50,000 / Set|
|Min. Order:||1 Set|
|Min. Order||FOB Price|
|1 Set||US $3,300-50,000/ Set|
|Production Capacity:||500 Units/Month|
|Payment Terms:||L/C, T/T|
- Model NO.: S11, S13
- Phase: Three
- Cooling Method: Oil-immersed Type Transformer
- Certification: ISO9001:2008
- Frequency Characteristics: Power Frequency
- Brand: Zhongyi
- Winding Material: Copper Winding
- Iron Core: New Grain Oriented Silicon Steel Sheet
- Coil Structure: Toroidal
- Vector Group: Dyn11 or Yyn0 or Others
- Type: Oil Immersed
- Transport Package: Wooden Case, Container
- Origin: Hebei, China
- Application: Power
- Core: Core-type Transformer
- Winding Type: Auto-transformer
- Usage: Power Transformer, Distribution Transformer, Power Grid System
- Shape of Core: Ring
- Product Name: Oil Immersed Power Distribution Transformer
- Rated Capacity: 30 - 3500kVA
- Coil Number: Autotransformer
- Frequency: 50 or 60 Hz
- High Voltage: 6-35kv
- Trademark: Zhongyi
- Specification: oil immersed transformers
1.Insulation Electrical oil immersed transformer
2.IEC 60076 Standards
3.High efficiency,low loss,low noise
5.Copper winding or alluminum winding
China Manufacturer Step Down 3 Phase Oil Immersed Power distribution Transformer
With the company's unique calculation program, the iron core, coil, body, leading wire, fuel tank and other components for the 10-35kV class power and distribution transformers are optimized in all directions to ensure product performance, excellent process equipment, careful material optimization, efficient manufacturing, making the transformer with low loss, low partial discharge, low noise etc., the product quality is superior, with energy saving and environmental protection, reliable operation and effectively reduce the operating costs.
1.Compared with S9,S11series Step Down 3 Phase Oil Immersed Power distribution Transformer,the annual average no-load loss of S13 is reduced by 30% and the average load loss is reduced by 20%.At the same time,it saves energy obviously.
2.It has the complete symmetry tri-phased iron core magnetic circuit,which greatly reduces the magnetic resistance and no-load loss,and thus,though adopting the traditional materials,which is more high efficient and energy saving,producing smaller noise and with more compact structure.
|The iron core material||Being selected from high-quality high magnet conductive cold-rolled silicon steel sheet, the iron core processing uses German-imported Georg line cutting device, with the full-gradient ladder joint structure, no hole banding, plate-type clamping part structure.|
The high and low voltage coil is packed according to the split phase. The design pressure is evenly compressed to ensure the coil axial strength.
The inner coil is lined with high-strength phenolic paper tube. The internal and external struts are used on the high and low voltage coil, technically making ensure enough tightening of the coil radial.
|Leading Wires||Transformer wires use the oxygen-free copper and high-strength insulation material.|
|Oil Tank Manufacturing|
Transformer tank adopts bucket type or bell-type.
|The transformer explosion-proof device||The explosion-proof device uses YSF8-type pressure relief valve.|
|Crimping Technology||Transformer wires use the oxygen-free copper and high-strength insulation material.|
This Low Loss Step Down 3 Phase Oil Immersed Power distribution Transformer is suitable for the core structures in power plants, substations, large-scale industrial and mining and petrochemical enterprises.
- Good Economic Performance
Based on S9 series, the no-load loss for S11 series Low Loss Step Down 3 Phase Oil Immersed Power Transformers decreased averagely 10.3%, no-load current decreased 22.4%.
The three-phase oil immersed idstribution transformer adpots new type insulation structure and makes the shot-circuit resistance strong.
- Long Service Life
Transformer tank adopts fully sealed structure, fuel tank and tank rim can be connected by bolts or welded firmly, the transformer oil doesn't contact with the air, extending the service life.
- High Operational Reliability
Improve the relevant sealing parts for the fuel tank, increase the reliability and advance the technical level to ensure the reliability of the seal.
- Small Installation Area
S11-M series of transformer tank uses the corrugated plate radiator. when the oil temperature changes, the corrugated board expands from the heat and contracts from the cold, which can replace the role of the oil conservator, the corrugated plate type fuel tank has beautiful appearance, less occupied area.
S13 Step Down 3 Phase Oil Immersed Power distribution Transformer
Product Model No.
Rated Voltage KV
Connection Group Symbol
No-load Current (%)
High Voltage KV
Tapping Range of High Voltage
Low Voltage KV
The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.
Technical Parameter for S11 Series Step Down 3 Phase Oil Immersed Power distribution Transformer
|Voltage Combination||Connection Group Symbol||No-load Loss (W)75ºC||Load Loss R(W)||Impedance Voltage (%)||No-load Current(%)||Length L(mm)||Width W(mm)||Height H(mm)||Gauge Horizontal*Vertical (mm)||Active parts Weight(Kg)||Oil Weight(Kg)||Total Weight(Kg)|
|High Voltage (kV)||Tapping Range of High Voltage%||Low Voltage (kV)|
- The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.
- 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 Step Down 3 Phase Oil Immersed Power distribution Transformer With Off Circuit Tap Changer
|Model||Voltage Combination||Connection Group Symbol||No-load Loss (W)||Load Loss R(W)||No-load Current(%)||Short circuit impedance (%)||Length L(mm)||Width W(mm)||Height H(mm)||Gauge Horizontal*Vertical (mm)||Active parts Weight(Kg)||Oil Weight(Kg)||Total Weight(Kg)|
|High Voltage (kV)||Tapping Range of High Voltage%||Low Voltage (kV)|
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:
- Step Down 3 Phase Oil Immersed Power distribution Transformer
- dry-type transformers,
- box-type substation,
- high and low voltage switchgear assembly and a variety of special-type transformers.
The hoisting, tooling and testing equipments are complete.
- 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 Step Down 3 Phase Oil Immersed Power distribution 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 Report of China Compulsion Certification (CCC) from the State Bureau of Quality and Technical Supervision for Electrical Products;
- Indoor AC dray-out type metal clad switchgear KYN28A-12 / 1250-31.5, fixed AC metal-enclosed ring network cabinet XGN15-12 / 1250-31.5 and XGN15 metal-enclosed switchgears have passed the Test Report of the National Quality Supervision and Inspection center for High-voltage Electrical Appliances Product .
Our company's products are widely used in different industries, involving power plants, chemicals, construction, mining, metallurgy, rail transportation and so on, best meeting the needs of various users.
Sillicon steel sheet core for Oil Immersed Transformer
1, Wrapped with plastic film.
2, Fixed in a wooden case.
3, Wooden case on a pallet.
Delivery Details :
10-30 days according to order quantities
Q: Are you trading company or manufacturer ?
A: We are power transformer factory.
Q: How long is your delivery time?
A: Generally it is 15-20 days and it is also depending on the order quantity.
Q: Do you provide samples ?
A: Yes, we could offer the sample
Q: What is your terms of payment ?
A: 30% T/T in advance ,balance before shippment.
How to order:
Please provide the following data when placing an order, so we can service you better.
Data for Transformer
Type of transformer
Input voltage/ Output voltage