S11 transformer: dry type or oil immersed type?
Writer： Hengfeng you electric Time：2023-04-23 views：times
S11 power transformer uses the principle of electromagnetic induction, electromagnetic mutual inductance, voltage, current and reactance transformation. The transformer has two coils. Primary and secondary coils. The secondary coil is outside the primary coil. The turn ratio of the transformer coil is equal to the voltage ratio. Is s11 transformer dry or oil immersed?
A、 S11 Is the transformer dry or oil immersed?
Compared with the ordinary oil immersed transformer, the sealed transformer eliminates the oil conservator, and the change of oil volume is compensated by the elastic automatic adjustment of the corrugated sheets of the corrugated oil tank. The transformer is isolated from air to prevent and slow down oil deterioration and insulation aging, improve operation reliability and maintain normal operation.
B、 S11 Characteristics of transformer
1. S11 transformer core is made of imported high-quality cold-rolled silicon steel sheets, greatly reducing no-load loss and no-load current, and binding the core to ensure the tightness of the core and reduce noise.
2. High and low voltage windings are wound with oxygen free copper. Low voltage windings of 500KVA and below adopt double-layer cylindrical structure, while those of 630KVA and above adopt double helix or four helix structure. High voltage windings adopt multi-layer cylindrical structure.
3. Dyn11 is adopted for S11 transformer connection group to reduce the impact of harmonics on the power grid and improve the power supply quality.
4. S11 transformer is a fully sealed structure, which can extend the service life of the transformer, and it does not require core lifting, reducing maintenance costs.
5. S11 transformer noise value is lower than the standard.
S11 transformer is a fully sealed distribution transformer with rolled iron core, which is a new generation of low noise and low loss transformer developed in recent years. Its iron core has no joints, which greatly reduces the no-load loss and no-load current, reducing the no-load current by 60%~80%. High and low voltage coils are continuously wound on the core column, with compact windings and good concentricity, which further enhances the anti-theft performance of the product. The noise is reduced by more than 10 decibels. The temperature rise is 16-20K lower. Due to continuous winding of iron core (with pure circular cross section), the orientation of silicon steel sheet is fully utilized, and the no-load loss is reduced by 20%~30%.
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