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AC power frequency withstand yoltage (5 min.)：117kV DC withstand voltage (15 min.)：104kV lmpulse voltage test (+/-10 times)：200kV
Due to the large power fluctuation of new energy projects and the breathing effect of cable terminals, the cable terminal failure of Fengguang Project has become the main failure point of the power transmission and transformation part of the project. In order to reduce the failure loss, Beijing Yuanneng has cooperated with well-known universities in China to develop a state evaluation system for cable terminal failure prediction and life cycle state evaluation.