The invention relates to the technical field of transformers, and particularly discloses a high-safety
transformer which comprises an
oil tank and an oil conservator, a cover plate is fixedly mounted at the top end of the
oil tank, a fixing frame is fixedly mounted on one side of the
oil tank, the oil conservator is fixedly mounted at the top end of the fixing frame, a first oil
pipe is fixedly connected to the bottom of the oil conservator, and a gas
relay is fixedly connected to the middle of the first oil
pipe. A second oil
pipe is fixedly connected to the portion, between the conservator and the gas
relay, of the first oil pipe, a mounting frame is fixedly connected to one side of the cover plate, a first cylinder is fixedly mounted at the top of the mounting frame, a one-way
assembly is arranged in an inner cavity of the first cylinder, and the center of one side of the first cylinder communicates with the second oil pipe. The other side of the first cylinder is of an opening structure and is fixedly connected to a second cylinder mounted at the top of the mounting frame, and a pressure relief
assembly is arranged in the second cylinder. And when the
transformer continuously operates in an
overpressure manner but does not reach a light
gas protection alarm condition, the
safe operation of the
transformer is protected, and dangers are prevented.