注:單芯鎧裝電纜僅用于直流系統,若用于交流系統,應采用非磁性材料的鎧裝層或采用隔磁措施。The armoured single-core cables are used for D.C. system only.As for A.C.system , the magnetic isolation should be applied on the non-magnetical armored layer or non-magnetical materials should be used .