line tension
3.GHG-electrical grade activated silica powder is produced by way of mingling on the basis of electrical grade silica powder.It has activt effect on surface &make silica powder mingled with resin,raise cohesive force between resin &silica powder,raise the water-resestance on the sunface and the compressive strength of pour object,reduce sediment,gradation &split,increase filler of silica powder,and replaced inpoted products on the producing line of imported dry type transfomer &high tension mutual induc tance equiment,it has been the best pouring insulate materual in electrical trade.
6.Aimed at the characteristics of large cross section and quality of unit length of type ACSR-720/50 line,the construction scheme is submitted through which the techniques of pay-off,tension stringing and accessories section installation are compared. The construction is successfully finished and gained good effectiveness.

