标准摘要
[中文适用范围]： IEC 60974 的这一部分规定了用于弧焊和相关工艺冷却焊枪的工业和专业液体冷却系统的安全和结构要求。 IEC 60974 的这一部分适用于连接到单独的焊接电源或内置于焊接电源外壳中的独立液体冷却系统。 IEC 60974 的本部分不适用于冷冻冷却系统。注 1：典型的联合工艺是电弧切割和电弧喷涂。注 2：IEC 60974 的这一部分不包括电磁兼容性（EMC）要求。 [外文原描述]： IEC 60974-2:2013 specifies safety and construction requirements for industrial and professional liquid cooling systems used in arc welding and allied processes to cool torches. This part of IEC 60974 is applicable to stand-alone liquid cooling systems that are either connected to a separate welding power source or built into the welding power source enclosure. This part of IEC 60974 is not applicable to refrigerated cooling systems. This third edition cancels and replaces the first edition published in 2007 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - changes induced by the publication of IEC 60974-1:2012; - addition of a liquid temperature fixed to 65 °C during the heating test in order to allow testing at different ambient air temperature (see 10 d)); - correction factor of cooling power at 40 °C required in instruction manual (see 12.1 o)). This publication is to be read in conjunction with IEC 60974-1:2012 .
英文名称Arc welding equipment - Part 2: Liquid cooling systems