Electrical Silicone Rubber Stationary Insulation Cover with low-voltage is made of reinforced glass fiber PP and polycarbonate, with a service life of more than 15 years; It can effectively prevent the air parabola, external damage and small animal short circuit caused by burning transformer, prevent the occurrence of personal electric shock accident, and can be in the transformer serious overload, load serious phase bias, wiring clamp contact bad heating alarm prompt role. Effectively prevent freezing caused by transformer short circuit accident.