1Standards of Rubber Sheathed Flexible Mine Cables
GB12972-1991 Rubber sheathed flexible mine cables. Flame retardant type cables carry out standard MT818-1999 Flame retardant mine cables. Its flame retardant performance test carries out MT386-1995. When ordering the old type cables with flame retardant or non-fire-propagating cables. MT386 or flame retardant must be noted.
2: Characteristics of Rubber Sheathed Flexible Mine Cables
Long term permissible working temperature is 65.
3: Performance of Rubber Sheathed Flexible Mine Cables
Insulated resistance constant of finished products ki should not be less than 734MΩ.km and except electrical driller cables, the rest must be conformed to GB/T3956-1997 the stipulation of 5th kind flexible copper conductors.
4: Type of Rubber Sheathed Flexible Mine Cables
