Cottrell Electrical Precipitator High Duty Type Half Wave Mechanical Rectifier
Cottrell Electrical Precipitator High Duty Type Half Wave Mechanical Rectifier
Western Precipitation Corporation
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Heating and Ventilating of Substation: (1) The substation must be heated to pre- vent condensation of moisture on the rectifier but the room temperature should at no time exceed 100 F. To insure safe operating temperatures for the electrical equipment. (2) The building should also be ventilated to prevent the excessive formation of nitrous oxide fumes due to breaking down of the atmosphere by the recti- fier arc. These fumes are very injurious when inhaled in appreciable quantities. The heating... coils in the substation, usually steam, should be kept warm during the winter months and during periods of high humidity. The ventilat- ing fan should be operated and the room kept closed at all times. RAPPER CONTROL (1) The collecting and discharge electrode rappers are motor driven. The collect- ing electrode rappers are controlled by an automatic timer in the substa- tion as shown on Fig. 5836. (2) The circuit and operation of both timers are self-explanatory as shown on Fig. 5837. Closing the circuit breakers starts the cycle timer provided the selector switch is on "Automatic.
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