DIN EN 60811-509-2012 电缆和光缆. 非金属材料的试验方法. 第509部分:机械试验. 绝缘材料和护套的耐开裂试验 (热冲击试验) (IEC 60811-509-2012); 德文版本EN 60811-509-2012
Electric and optical fibre cables - Test methods for non-metallic materials - Part 509: Mechanical tests - Test for resistance of insulations and sheaths to cracking (heat shock test) (IEC 60811-509:2012); German version EN 60811-509:2012