奥太焊机故障(附图)感谢!

一台仿奥太焊机ZX7-400ST,电流调不大,最大电流只能达到200A,20A左右电流焊接有电弧啸叫声,大电流有噗噗声焊接不爽!请教各位是什么毛病?
我拍了些图片麻烦大家给帮个忙!感谢!

500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/74/580391235798552.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">4路驱动波形

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zhouchuanming

LV.5

2009-02-28 13:28

500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/74/580391235798805.jpg');}" onmousewheel="return imgzoom(this);">超前臂电压波形
输入电压160V

zhouchuanming

LV.5

2009-02-28 13:30

@zhouchuanming

[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/74/580391235798805.jpg');}"onmousewheel="returnimgzoom(this);">超前臂电压波形输入电压160V

500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/74/580391235798959.jpg');}" onmousewheel="return imgzoom(this);">滞后臂电压波形

zhouchuanming

LV.5

2009-02-28 13:39

@zhouchuanming

[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/74/580391235798959.jpg');}"onmousewheel="returnimgzoom(this);">滞后臂电压波形

500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/74/580391235799139.jpg');}" onmousewheel="return imgzoom(this);">主变原边电流波形图,焊机输出电流大约30A

zhouchuanming

LV.5

2009-02-28 13:41

@zhouchuanming

[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/74/580391235798959.jpg');}"onmousewheel="returnimgzoom(this);">滞后臂电压波形

此帖已被删除

zhouchuanming

LV.5

2009-02-28 13:43

@zhouchuanming

此帖已被删除

500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/74/580391235799754.jpg');}" onmousewheel="return imgzoom(this);">主变穿一匝电压波形图轻载

hanjiweixiu

LV.2

2009-03-02 13:14

@zhouchuanming

[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/74/580391235799754.jpg');}"onmousewheel="returnimgzoom(this);">主变穿一匝电压波形图轻载

没有高手吗?