... OPGW must be used in constructing high pressure line over 110kv;.For OPGW performance index, the ... , so that security is a question for line pole strengthCharacteristics:.bio-function of ground wire and ... and re-maintain;.erect on top of power overhead line pole, need not to consider its best hanging ... corrosion, and others..in the process of old line transformation, cable’s outer diameter and tension may ...