INSULATING AND SHEATHING MATERIALS OF ELECTRIC AND OPTICAL CABLES. COMMON TEST METHODS. PART 5-1: METHODS SPECIFIC TO FILLING COMPOUNDS. DROPT POINT. SEPARATION OF OIL. LOW TEMPERATURE BRITTLENESS. TOTAL ACID NUMBER. ABSENCE OF CORROSIVE COMPONENTS. PERMITTIVITY AT 23 ºC. DC RESISTIVITY AT 23 ºC AND
电缆和光缆的绝缘和护套材料 常见的测试方法 第5-1部分:填充化合物的特定方法 下降点 分离油 低温脆性 总酸值 无腐蚀性成分 23℃时的介电常数 23℃时的直流电阻率和