By changing frequency, using an intermediate-frequency transformer instead of a low-frequency transformer can make the arc starter small, light and reliable.
利用变频方法，以中频变压器取代低频变压器，从而使引弧器具有体积小、重量轻和引弧可靠的特点。
It also shows strong suit in reliability, stability, installment. principle, function of soft starter and its different starting way from transformer starter is introduced.
文章介绍了软起动器的原理、功能及其与减压起动方式的不同。
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