Based on the sudden decline of the secondary current after current transformer saturation, a new saturation criterion called current-dropping method is presented.
基于电流互感器饱和后二次电流突然下降的特点，提出了一种新的电流互感器饱和判别方法——电流下降法。
Features: PLC programming, equip with Japan Miyachi CT-110 welding control device, three segments electrification method, with current slow increasing and slow dropping function.
特点：采用PLC程控，配置日本米亚基ct - 110焊接控制器，三段通电方式，具有电流缓升缓降功能。采用焊接变压器次级反馈控制电流及导通角控制。
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