The utility model relates to a technique is reformed transform to the 500kV circuit, the utility model discloses a wire damper that is used for heat -resisting wire increase -volume of 500kV circuit to reform transform, its characterized in that equidistance is installed the damper on each sub - wire, its neutron wire is package steel core shaping heat resistant aluminum alloy stranded conductor, aluminium package steel core shaping heat resistant aluminum alloy stranded conductor is used for connecting 500kV power transmission line 's tower pole, wherein the heat resistant aluminum alloy stranded conductor includes the heart yearn by many aluminium package steel core conductor stranding one -tenth, enveloped core wire's the inner conductor layer and the outer conductor layer on the interior aluminum conductor layer of parcel, inner conductor layer and outer conductor layer form by the many aluminium conductor stranding that adopt heat resistant aluminum alloy to make, the cross sectional shape of aluminum conductor is fan -shaped, the cross sectional shape on inner conductor layer and outer conductor layer is the ring, and the cross sectional area's on outer conductor layer and inner conductor layer ratio is 5: 3. Shelves when the shelves distance is greater than 500m, just need the installation damper apart from can no longer adopt the antivibration measure below 500m on each sub - wire.