GB/T 2951.51-2008
电缆和光缆绝缘和护套材料通用试验方法.第51部分:填充膏专用试验方法.滴点.油分离.低温脆性.总酸值.腐蚀性.23℃时的介电常数.23℃和100℃时的直流电阻率
Common test methods for insulating and sheathing materials of electric and optical cables.Part51:Methods specific to filling compounds.Drop point.Separation of oil.Lower temperature brittleness.Total acid number.Absence of corrosive components.Permittivit