The contact box is a kind of accessory used for various handcart switch cabinets. It is an epoxy resin APG process pressure gel molding structure, which is used for various handcart switch cabinets for insulation isolation and connection transition;
The use conditions are that the altitude is not more than 1000M, the ambient temperature is+40 ℃~10 ℃, and there is no place where the gas, steam, dust and other explosive and corrosive media seriously affect the insulation of the contact box;
The contact box and the contact shall be able to withstand the power frequency test voltage (effectiveness) of 42KV to the ground for 5 minutes, and the lightning impulse (peak value) of 75KV. The temperature rise of the outlet end of the contact box under the rated current and long-term operation shall not exceed 65 ℃.
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