Power transmission equipment with protection function

The power transmission equipment with the protection function comprises a transformer main body, the transformer main body is provided with a fire extinguishing mechanism, the fire extinguishing mechanism comprises a mounting frame arranged on the outer side of the transformer main body in a sleeving mode, and a main body pipe is vertically and slidably arranged on the inner side of the mounting frame; a plurality of fire extinguishing nozzles are arranged on the inner surface of the main body pipe in the height direction of the main body pipe, a storage box is arranged above the transformer main body, and a driving component for driving the main body pipe to move is arranged on the surface of the mounting frame; when the transformer main body is on fire, dry powder in the storage box can be sprayed out through the main body pipe and the fire extinguishing spray head in time to act on the surface of the transformer main body, the fire extinguishing spray head moves in a reciprocating mode to expand the fire e