. Practical wireless telegraphy; a complete text book for students of radio communication . nd the other terminal tothe frame of the motor generator. Theframe of the motor generator is connectedto the earth at the binding post or at anyother convenient point. These condensersare generally mounted in a containing rackon the top of the motor generator and pro-tected from injury by a cast iron case. In naval radio systems, fuses are con-nected in series with the protective con-densers to protect the power mains in caseof puncture of the dielectric. 58. Care of the Motor Generator.—When first comi
. Practical wireless telegraphy; a complete text book for students of radio communication . nd the other terminal tothe frame of the motor generator. Theframe of the motor generator is connectedto the earth at the binding post or at anyother convenient point. These condensersare generally mounted in a containing rackon the top of the motor generator and pro-tected from injury by a cast iron case. In naval radio systems, fuses are con-nected in series with the protective con-densers to protect the power mains in caseof puncture of the dielectric. 58. Care of the Motor Generator.—When first coming in contact with amotor generator of any type, the stu-dent should note particularly how thebrushes are held in the rocker arm andhow the connections are attached toand between the various brush should also note the connectionsinside the frame from the motor tothe generator. Particular observanceshould be made of the thrust bearingmounted on the end of the shaft totake up the end play. In the case ofthe 2 K. W. 500 cycle inotor generator,the method of attaching the rotary. Fig. 79—Showing How Protective Condensers are Con-nected to Marconi Motor Generators. the metnoQ ox aiiacmng mc lutaijr , „ ppark gap to the end of the generator shaft should be carefully gone over. Proper care of the motor generator is assured if the following general rulesare observed: (1) Keep motor brushes clean and free from copper dust. Use sand paper only,avoid emery cloth. (,> sr^r„^:rproTviri.«.«.o *.. ,^ -u „o. .^., (5) of motor generator, »d rocte .,m to mvint accumulation of dust and grease. rnt?orer^s;rd^:tor. Normal speed can be o^^^^^ L^:tS=oT:^iror^^^^^^^^^^^ Totsufe that the normal load of ^^If^-^^^^^^^l^t ^-X ° =°-When removing armature from motor generator, it is genera y lerX,otectivecUdensersareatan^^^^^^^ (6) (7)(8) (9) See that protective ^°^^^iZ!:^lU76isc^^^^ from the circuit(10) Punctured condensers should be re
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
