. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Flo. 91.—Oanz & alteriiating-ciirreiit dynamo. ? Wit hi lilt base. + Approximate. DYNAMO-ELECTRIC MACHINES. 237. Fig 92 —Ganz & Co s alternating current dynamo bolted to the traversers. The armature-plates are held together by ribbed bronze plates, whichalso serve to hold the armature-coil in its place. In larger armatures bronze plates are alsoinserted at intermediate points, and they serve for the attachment
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Flo. 91.—Oanz & alteriiating-ciirreiit dynamo. ? Wit hi lilt base. + Approximate. DYNAMO-ELECTRIC MACHINES. 237. Fig 92 —Ganz & Co s alternating current dynamo bolted to the traversers. The armature-plates are held together by ribbed bronze plates, whichalso serve to hold the armature-coil in its place. In larger armatures bronze plates are alsoinserted at intermediate points, and they serve for the attachment of the armature-section tothe traversers by means of insulated bolts and nuts, as shown at III. Fig. 92 shows a complete machine intended for an output of 80 kilowatts. In this ma-chine there are 14 poles and 14 armature-sections, which can be coupled to eive a pressure ofeither 2,000 or 4,000 volts ^ f -^ ^ vi with a current of respect-ively 20 or 40 speed of the machineis 360 revolutions per min.,giving 5,040 reversals, or afrequency of 42. The to-tal weight of the iron core,both in tield-magnets andarmatures, is 1 ton 7 cwt.,and the total weight ofcopper is 980 lbs. The re-sistance of the armature is1-038 ohms for a 2,000-voltmachine, giving a loss of208 per cent by oh
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
