南京干式变压器：南京干式变压器绕组型式

南京干式变压器绕组型式 　　
南京干式变压器绕组型式主要决定于其电压等级和额定容量。考虑到采用的工艺与所用材料时绕组的结构型式也有所不同。目前主要采用企业账号：1611 0032 092 00213 086的绝缘型式为浸渍式与树脂绝缘式，树脂绝缘可分为浇注式和绕包式南京干式变压器。此外尚有复合式绝缘和SF6气体绝缘等南京干式变压器。
(1)连续式绕组
浸渍式南京干式变压器的高压绕组常采用连续式.该绕组由单根或多根导线并联绕制的多个线段组成。段间以气道分开，每个线段辐向连续绕制若干线匝.每段匝数可分为整数匝或分数匝。由此可见连续式或半连续式(气道和绝缘圈交错放置，在温升允许时可降低绕组高度)绕组由一个反段，导线必须经过重置后，故将此段称为反段，它和一个正段组成一个单元或称双饼。连续式或半连续式绕组都是由连续的双饼组成。

(2)螺旋式绕组
螺旋式绕组是由多根扁导线并联绕制而成的，每段为一匝，相邻匝间由垫块分开。螺旋式绕组的机械强度高.散热面积也较大，但此种绕组的匝数较少，多用于浸渍式南京干式变压器的低压绕组。螺旋式绕组有单螺旋式、双螺旋式和四螺旋式等型式。
单螺旋式绕组只有一股螺旋，相邻匝间设有垫块。

(3)双螺旋式绕组
双螺旋式绕组通常采用一次交叉换位法.此种换位就是换位均匀分布于绕组上，换位数等于双螺旋导线并联报数。每一换位处将一个线饼的上面一根导线移至另一线饼的下面，同时将另一线饼下面一根导线移至此线饼的上面，上下换位成交叉状。通过全部换位依次将一个线饼的导线换至另一线饼，然后再换至原线饼的导线位置，此种换位称一次交叉换位。当绕组再重复一次称二次均匀交叉换位。
四螺旋通常按二个双螺旋进行换位。

Dry-type transformer winding type
Dry-type power transformer winding type is mainly determined by their voltage rating and the rated capacity. Taking into account the technology used in the winding structure type in the materials used are also different. Currently the main use of insulation type insulation is impregnated with resin, the resin insulation can be divided into the pouring and around package dry type power transformers. Additionally, there are composite insulated and SF6 gas-insulated dry-type transformers.
(1) continuous winding
Impregnated dry type power transformers, high voltage winding is often continuous. The windings in parallel by a single or multiple wires around the system composed of multiple segments. Between segments separated from the airway, each segment spoke to the continuous winding line turns each number of turns can be divided into the integer-turn or fractional turn. This shows that the continuous or semi-continuous (airway and insulating ring staggered arrangement can reduce the temperature rise to allow the winding height) winding consists of an anti-wires must be reset, so this section referred to as anti-segment, It is a positive segment to form a unit or dual-cake. Continuous or semi-continuous winding by a continuous cake.

(2) the helical winding
The spiral winding is connected in parallel by multiple flat wire winding made of each a turn between the adjacent turns separated from the pad. High mechanical strength of the helical winding cooling area, but such winding turns less, used for the low voltage winding of the impregnated dry type power transformers. The helical winding single spiral, double spiral, and four spiral type.
Single spiral winding only a spiral, has a pad between the adjacent turns.

(3) The winding of the double helix
The double helix winding usually cross transposition of such transposition transposition evenly distributed in the windings, change the median is equal to the reported number of double helix wire in parallel. Each transposition at the top of a wire in a wire cake to move to another line below the cake, while another line cake following a conductor moved to the top of the cake of this line, up and down transposition into a cross-shaped. All transposition followed by wire of a line of cake to change to another line of cake, and then change to line cake wire location, such transposition, said first cross-transposition. When the winding repeat once again, said the second uniform cross-transposition.
Four spiral usually two pairs of spiral transposition.

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