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SZ9-400-20000
SZ9-400-20000 Three-phase oil-immersed on-load voltage-regulating power transformer

 SZ9-400-20000  Three-phase oil-immersed on-load voltage-regulating power transformer  

 

Production introduction

The product conforms to the technical parameters and requirements of China National Standard GB1094 and GB/T6451, and a series of significant innovation is applied in aspects of material, design and structure. It has the features of high efficiency and low loss. It can save a lot of operation cost, and the social benefits are very significant. In conclusion, it is a nationally promoted new product and it is deeply favored by customers.
Installation type: indoor/outdoor type
Ambient temperature: -25°C ~ +40°C
Altitude: ≤1000m
Installation site: in places without corrosive gases, obvious dusts.

 

Performance characteristics
1. The features of this product are high efficiency and low loss. It can save a lot of operation cost, and the social benefits are very significant.
2. The iron cores are made of the imported high-conduction magnetism, cold-roll, and grain-oriented silicon-steel sheets. The iron cores and windings adopt the vacuum drying and vacuum oil-filling processes, which make the internal moisture down to the very low level.
3. The conservator is hermetically sealed, which make the internal running oil to insolate with oxygen and moisture efficiently.
4. The above features guarantee the transformer does not need to replace the oil during the normal operation, greatly decrease the maintenance cost, and prolong the service life.


Applicable standards
GB1094.1-2-1996 Power Transformer
GB1094.3; 5-2003 Power Transformer
GB/T6451-1999 Technical parameters and requirements for three-phase oil-immersed power transformer

Note for placing order:
Hermetically-sealed distribution transformer
1. Transformer type: ________________
2. Rated capacity (kVA) : ____________
3. Number of phases: three-phase, or single-phase
4. High voltage (KV): ______________
5. Low voltage (KV): ______________
6. Frequency: 50Hz or 60Hz
7. Tapping range: ±4x2.5%, or ±3x2.5%, or others;
8. Connection group: Yyn0, or Dyn11, or others;
9. Impedance voltage: 4%, or 6%, or others;
10. Cooling method: ONAN, or ONAF;

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