| 技术参数 |
| 技术参数 | | ZX7-250 | ZX7－315 | ZX7－400 | ZX7－500 | ZX7－630 |
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| 输入电压频率(Hz) | | 50/60HZ | 50/60 | 50/60 | 50/60 | 50/60 |
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| 焊接电流(A) | | 20-250 | 20-315 | 20-400 | 20-500 | 20-630 |
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| 额定负载持续率 60% | | 250A/30V | 315A/32.6V | 400A/36V | 500A/40V | 630A/44V |
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| 额定负载持续率 100% | | 194A/27.8V | 244A/29.8V | 310A/32.4V | 387A/35.5V | 488A/39.5V |
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| 效率（额定条件下） | | ≥0.85 | ≥0.85 | ≥0.85 | ≥0.85 | ≥0.85 |
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| 外壳防护等级 | | IP21S | IP21S | IP21S | IP21S | IP21S |
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| 焊接范围 | | 0.5-6mm | 1.5mm以上薄、中板 | 1.5mm以上中、厚板 | 1.5mm以上中、厚板 | 1.5mm以上中、厚板 |
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| 焊条适用规格(直径mm) | | ≤4.2 | ≤4.2 | ≤5.0 | ≤5.0 | ≤5.0 |
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| 外型尺寸(mm) | | 520*250*480 | 600*300*600 | 600*300*600 | 690*360*730 | 690*360*730 |
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