Insulating and sheathing materials of electric and optical cables - Common test methods - Part 5-1: Methods specific to filling compounds - Drop point - Separation of oil - Lower temperature brittleness - Total acid number - Absence of corrosive components - Permittivity at 23 °C - D.C. resistivity at 23 °C and 100 °C (IEC 60811-5-1:1990, modified + A1:2003); German version EN 60811-5-1:1999 + A1:2004
电缆和光缆的绝缘和护套材料.通用试验方法.第5-1部分:填充化合物专用方法.滴点.油分离.低温脆性.总酸值.无腐蚀成分.23°C下的介电常数.直流电阻率