China Supplier Low Noise 400 kVA Oil-Immersed Auto Transformer with ISO Certificate

• Customization: Available
• Application: Power
• Phase: Three
• Model NO.: OSZ 400KVA
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001
• Usage: Single-phase Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: ABB
• Type: Osz
• Rated Capacity: 400kVA
• Rated Voltage Ratio: 10kv/0.4kv
• Impedance Voltage: 4
• No Load Loss: 470W
• on Load Loss: 3300W
• Weight: 900kg
• Transport Package: Wooden Box
• Specification: 1200*600*1200
• Trademark: Hero
• Origin: China
• HS Code: 8504100000
• Production Capacity: 2000/Year
• Package Size: 1200.00cm * 600.00cm * 1200.00cm
• Package Gross Weight: 900.000kg

Product Description

                              

China Supplier Low Noise 400 kVA OSZ Oil-Immersed Auto Transformer with ISO Certificate
 

Product Description

 

Autotransformer is a kind of specail transformer, of which  primary and secondary winding are the same and without insulation. According to the structure, it can also be subdivided into voltage changable type and fixed type.

Product features
1.Since the calculated capacity of the autotransformer is less than the rated capacity, the main dimensions of the autotransformer are smaller under the same rated capacity, and the effective materials (silicon steel sheet and conductor) and structural materials (steel) are reduced accordingly, thus reducing the cost. The reduction of effective materials makes the copper loss and iron loss decrease correspondingly, so the efficiency of autotransformer is high. At the same time, due to the reduction of the main size and the mass, it is possible to manufacture a single transformer with larger capacity under the allowable transportation conditions. However, the above advantages are usually obvious only when k ≤ 2.

2.Since the short-circuit impedance of autotransformer is smaller than that of double winding transformer, the voltage change is smaller, but the short-circuit current is larger

3.Due to the direct connection between the primary and secondary of the autotransformer, when the high-voltage side overvoltage occurs, it will cause serious overvoltage on the low-voltage side. In order to avoid this danger, both primary and secondary windings must be installed with lightning arresters. 

4.Autotransformer is mostly used as motor step-down starting under low voltage.
 

Detailed Photos

Product Parameters

Products specification
 

Model: OSZ 
Rated Capacity:400KVA
Rated voltage ratio: 10kV / 0.4kV
Impedance voltage: 4%
No load loss: 570w
Load loss: 4300w
Oil weight: 180kg
Body lifting weight: 580kg
Total weight: 920kg
Dimensions (L*W*H):1200*600*1200

 

Certifications

Company Profile