Description of S11 and 10KV low loss power transformer
S11, 10KV class low loss power transformers execute national standard GB1094 "power transformer" and GB/T6451 "three-phase oil immersed power transformer technical parameters and requirements".
S11 is a three phase oil immersed R type and a ladder type coiling core distribution transformer. The staircase three column inside and outside frame structure, all in the outer layer welding do not bind. The core material is cold-rolled silicon steel sheet such as DQ133-30 (9 type), 30ZH120 (11 type) and 23ZH90 (13 type). The core material used in actual production is no less than the drawing requirement. The iron core is made from continuous coiling without joint. R core sheet width ensures that the core section is round and the staircase core is made of multistage wide roll. After the iron core coiling iron is formed by vacuum annealing, the stress is eliminated and the loss is reduced.
S11, 10KV low loss power transformer adopts fully sealed corrugated tank structure, transformer oil and ambient air do not touch, so the transformer oil will not absorb moisture, which does not reduce the insulation strength; also because oxygen can not enter the tank, thus avoiding the aging of insulating materials, improve the service life of the product, but also improve the social benefits.
> Energy saving:
S11 compared with GB/T6451, the no-load loss reduced by 30% on average, the average load loss is reduced by 25%, operating costs fell by an average of 20%.
> It has long service life:
the transformer tank adopts fully sealed structure along the tank and tank available bolted or welded, transformer oil does not contact with air to extend the service life.
> Some high reliability:
tank sealing parts are improved, increase the reliability, improve the level of technology to ensure the reliability of sealing.
> It covers an area of small S9-M, S11-M series transformer tank using corrugated plate radiator, when the oil temperature change of corrugated plate thermal expansion and contraction can replace the oil storage cabinet, corrugated plate tank has the advantages of beautiful appearance, small footprint.