Positive pressure type electrical equipment explosion-proof principle - Database & Sql Blog Articles

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The principle of explosion-proof of positive-pressure electrical equipment is: the electrical equipment is placed in the outer casing, and there is no flammable gas release source in the casing; the protective gas is filled into the casing, and the pressure of the protective gas in the casing is higher than the surrounding explosive environment. The pressure is applied to prevent the external explosive mixture from entering the casing and achieving explosion protection of the electrical equipment. Positive pressure electrical equipment can be used in explosion hazardous areas such as factories or coal mines. The positive pressure type electrical equipment is marked with "p".

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