The utility model relates to the technical field of
lightning arrester boxes, in particular to a direct-current
lightning arrester box, which adopts the technical scheme that the direct-current
lightning arrester box comprises a box body, windows are arranged on the front side and the rear side of the box body, a vertical column is fixedly mounted on the bottom surface of the inner wall of the box body, and a high-
voltage cable gland and a grounding
cable gland are arranged on the outer wall of one side, without the windows, of the box body. The high-
voltage cable gland is arranged on the upper side of the outer wall of the box body in a penetrating mode, the grounding cable gland is arranged on the lower side of the outer wall of the box body in a penetrating mode, the
lightning arrester is fixedly installed in the box body, the outer portion of the
lightning arrester is an outer sleeve formed by encapsulating
silicone rubber in an integrated die-
casting mode, and the bottom of the
lightning arrester is fixedly connected with the installation base. The direct-current lightning arrester has the advantages that the closed box body is additionally arranged on the direct-current lightning arrester, so that the lightning arrester operates in a relatively
clean environment,
dirt accumulation on the surface of the composite jacket umbrella skirt is prevented, the number of times of cleaning the lightning arrester umbrella skirt is reduced, and the phenomenon that the composite jacket umbrella skirt cannot be damaged when a vehicle runs can be prevented. And foreign matters
jumping up from the ground damage the lightning arrester jacket. And meanwhile, the vehicle is convenient to wash, the flashover fault caused by creepage due to the wet surface of the lightning arrester umbrella skirt is avoided, the
fault rate of the lightning arrester is greatly reduced, the operation reliability of the lightning arrester is improved, and the maintenance cost of the vehicle is also saved.