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全密封变压器，不同于普通油浸式变压器，它取消了储油柜，由波纹油箱本体的翅板作为散热冷却元件，同时根据变压器体积的增减而胀缩，使变压器内部与大气隔离，防止油的劣化和绝缘受潮，增强了运行的可靠性。
产品采用德国闲心的技术结构，计算机CAD智能设计，性能符合国际IEC60076、GB1094标准。
铁心采用优质冷轧硅钢片，有自动生产线应用阶梯接缝(Steep-Lap)最新工艺制造，有效地改善了磁通在铁心内部的分布状况，减低了噪声，降低了损耗。
线圈采用高强度漆包线（或纸包线）卷绕，型式为圆筒式（或饼式）结构，安匝分布均匀，绝缘结构合理，具有很高的抗短路能力。
油箱为波纹结构，有德国GEORG公司油箱自动生产线加工、制造，表面经磷化处理后用三防漆（防潮、防霉、防盐雾）涂装，能广泛地应用于冶金、矿山、石化等使用环境恶劣的场合。
油箱内使用的紧固件均采用止退螺母，即使长途运输后也不会松脱。所有组件均采用双重密封机构，杜绝渗漏，密封件均采用优质丙烯酸酯橡胶为材料的名牌产品，能有效地防止光老化、电老化、热老化。
控制方面配有信号温度计和电接点压力释放阀，起到故障报警和断电作用，增强了变压器运行的可靠性。
This type of transformer is different from ordinary oil-immersed transformers due to thefact that it is provided without conservator. The fins on corrugated tank act as radiatoand can swell up or shrink to compensate the oil volume variation. Such kind of structrecan isolate the transformer oil from the atmosphere Protect the oil and the insulation against degradation, therefore, enhance the running reliability This type of transformers has been widely used for city grid upgrasing and in industrial and mining enterprised.
This product is optimally designed by means of CAD Its performance complies with IEC0076 standards an Chinese National Standards GB1094. Its production has got the certification of comforming to ISO9001 Quality System.
The core is made of high quality cold-rolled silicon-steel sheet. The lamination sheets are produced by the up-to-date automatic step-lap core lamination line. The distribution of magnetic flux in the core is distinctle improved and the noise and loss are reduced.
The winding is made of high strength varnished wire or paper-insulated wire in cylindrical or disk type. The distribution of ampere-turns is uniform, the insulation structure is reasonable, so the winding has high ablility to withstand short-circuit.
The oil tank is corrugated type and fabricated with automatic tank production line from GEORG in Germany, After phosphorating,its surface is coated with dampproof, mildewproof and saline fog proof painting , Thus, the transformer can be widely used in severe conditions ,such as metallurgical industry, mines petrochemical plants and so on.
All fastening pieces used in the oil tank are check nuts to prevent against loosing after long distance transport.
All assembles of the tank are designed with double sealing to avoid any leakage.
The sealing elements are made of high quality cork rubber which can inhibit their ageing caused by light, electricity and heat.
The transformer is equipped with tele-thermometer and pressure relief valve, thus increasing its reliability.
10kV级S9、S11系列全密封无励磁调压三相配电变压器