The invention discloses a direct-current high-
voltage generator testing device and a testing method thereof, which are used for testing a double-section
lightning arrester structure. The device comprises a high-
voltage generator, a console, a first current
detector and a second current
detector, and the console is connected with the high-
voltage generator; the output end of the high-
voltage generator is connected with the first current
detector in series; the output end of the first current detector is connected with a
lightning arrester structure; a first porcelain
bottle and a second porcelain
bottle of the
lightning arrester are connected in series, the second end of the first porcelain
bottle is connected with the first end of the second porcelain bottle, the first end of the first porcelain bottle is grounded, the second end of the second porcelain bottle is connected with the input end of a second current detector, and the output end of the second current detector is grounded. The invention further provides a direct-current high-
voltage generator testing method. According to the invention, the direct-current reference voltage and leakage current tests can be carried out on lightning arresters of various voltage classes without removing wires, and the wiring is simple and reliable.