Protection device for transformer

The invention relates to the field of protection devices, in particular to a protection device for a transformer. The device comprises a baffle and supporting legs, wherein at least four supporting legs are arranged on the periphery of the baffle. Each supporting leg comprises a first connecting rod, a rotating mechanism, a second connecting rod and a fixing clamp, wherein one end of the first connecting rod is connected with the baffle, the other end of the first connecting rod is connected with the rotating mechanism, one end of the second connecting rod is connected with the rotating mechanism, and the other end of the second connecting rod is fixedly connected with the fixing clamp. The protection device further comprises a sleeve which sleeves an insulation sleeve, and an opening forbeing connected with a lead is formed in one side of the sleeve. According to the protection device for the transformer, the device is installed on the transformer, the transformer and the transformersleeve can be effectively