Replacement communicating device for transformer gas relay testing

The utility model relates to a replacement communicating device for a transformer gas relay testing. The replacement communicating device for the transformer gas relay testing comprises a communicating pipe, wherein the communicating pipe is fixedly connected with a flange and is provided with a hole, and a relief plug is arranged in the hole; the calibers and the lengths of the communicating pipe and a gas relay are the same, and a base is fixedly arranged in the hole; the relief plug is arranged on the base; and the hole is provided with a relief screw. The replacement communicating device for the transformer gas relay testing is used for temporary replacement when the gas relay is tested, accordingly, a plurality of gas relays can be replaced once to be tested, so that the time of manpower and resources can be saved, and the smooth and timely completion of annual inspection pre-testing work is effectively ensured.