针对不同的磁心材料进行了损耗对比分析。

Contrast analyze have be done with different core material.

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介绍了逆变式等离子切割机主变压器常用的磁心材料的性能特点，提出了设计、制作主变压器的步骤、计算方法及示例。

The properties and characteristics of core materials commonly used in plasma cutting inverter are introduced in the paper. The design procedures and examples of main transformer are proposed.

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