Page 54 - 九控电气科技有限公司

▁ 结构特征 /structure characteristics

◇铁芯
采用材质性能不低于 2a7ZH100 冷轧硅钢片；三相三柱立体对称结构，有最短及最平衡的三相磁路；每组 ( 卷 ) 芯片由薄钢带在专用铁芯
卷绕机上绕制，压力均匀紧实；铁芯框经真空退火处理，消除应力，提高电磁性能。
三角形铁芯不需裁剪及冲剪加工，消除了传统铁芯的横向、纵向接缝，减少了磁阻；铁芯柱横截面呈圆形，铁芯的填充系数最大，三角形
立体结构使它的三相磁回路相等并且最短，实现了人们梦寐以求的理想变压器的铁芯结构。
◇绕组
绕组采用瓦楞油道，不浸漆工艺，紧缩带绑扎；绕组均为铜芯式线圈；高压绕组具有对应分接电压要求的抽头，引至分接开关上，开关安
装在箱盖上，且需切断电源后方可变换分接电压。
◇安全保护装置
80~1600kVA 变压器均装有压力释放阀；根据用户需求可安装具有报警和跳闸端子气体继电器；
◇油温测更装置
变压器均装有玻璃温度计的管座，管座设在油箱顶部，伸入油箱内 120±10mm;
容量在 1000kVA 以上的变压器装有户外式信号温度计；
◇变压器油箱
变压器油箱由波纹壁构成，表面采用粉尘静电喷涂，漆膜牢固。波纹散热片不但具有冷却功能，而且具有“呼吸”功能，波纹散热器的弹
性可补偿因温度升降而引起的变压器油体积的变化。因此全密封变压器没有储油柜，降低了变压器整体高度；
全密封变压器，在装配时采用真空注油工艺，完全去除了变压器中的潮气，变压器油不与空气接触。有效地防止氧气和水分侵入变压器而
导致变压器绝缘性能下降和变压器油老化的可能，因此不定期进行油样实验。

His core
Cold rolled silicon steel sheet with material performance not less than 2a7ZH100; Three-phase three-column three-
dimensional symmetrical structure, the shortest and the most balanced three-phase magnetic circuit; Each group (coil) chip is
wound by a special iron core winding machine with thin steel belt, and the pressure is uniformly compacted. The core frame is
treated by vacuum annealing to eliminate stress and improve electromagnetic performance.
The triangular iron core does not need cutting and punching processing, which eliminates the transverse and longitudinal
joints of the traditional iron core and reduces the magnetoresistor. The cross-section of the iron core column is circular, the
filling coefficient of the iron core is the largest, and the triangular three-dimensional structure makes its three-phase magnetic
circuit equal and the shortest, realizing the desired ideal transformer iron core structure.
Cardiac winding
The winding adopts corrugated oil channel, no dipping paint technology, compact belt binding; The windings are copper core
coils. High voltage winding has tap to tap voltage requirements, lead to tap switch, switch installed on the box cover, and
need to cut off the power supply before switching tap voltage.
After the security protection device
80~1600kVA transformers are equipped with pressure relief valve; Gas relay with alarm and tripping terminal can be installed
according to user requirements;
Oil temperature measuring device
Transformers are equipped with glass thermometer pipe base, pipe base on the top of the tank, into the tank 120 plus or
minus 10mm;
Transformers with a capacity of more than 1000kVA are equipped with outdoor signal thermometers;
Transformer oil tank
Transformer oil tank is composed of corrugated wall, dust electrostatic spraying is applied on the surface, and the paint film
is firm. Corrugated radiator not only has cooling function, but also has "breathing" function, the flexibility of corrugated 45
radiator can compensate the transformer oil volume change caused by temperature rise and fall. Therefore, the fully sealed
transformer has no oil storage tank, which reduces the overall height of the transformer.
Fully sealed transformer, in the assembly of vacuum oil injection process, completely remove the moisture in the transformer,
transformer oil and air contact. It can effectively prevent oxygen and moisture from invading transformer and lead to
transformer insulation degradation and transformer oil aging.