The required VA ratings of auto-couple transformers is much less than its output power, thus the size and price of the transformer is reduced a lot.
自藕变压器的伏安容量大大小于变压器输出功率，减小了变压器的体积和价格。
When the cable is dragged into the center of some all tube, a preliminary to the transformer tank slowly put transformer insulation sheath, then not so much the traction rope.
当电缆有些全部拽进中心管里时，初步往变压器油箱里慢慢地放变压器绝缘护套，这时不要过分地拉紧牵引绳。
When the cable is dragged into the center of some all tube, a preliminary to the transformer tank slowly put transformer insulation sheath, then not so much the traction rope.
当电缆有些全部拽进中心管里时，初步往变压器油箱里慢慢地放变压器绝缘护套，这时不要过分地拉紧牵引绳。
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