[Trade Journal] Publication: Electrical World New York, NY, United States |
||
· · [Missing text] · · Each motor car is equipped with two 25-cycle, single-phase motors. Each of the Siemens motors is rated at 180 hp; the Westinghouse motor is rated at 150 hp. The auxiliary apparatus on the Siemens cars consist of the main transformer, a lightning transformer, a so-called "preventive" coil and commutating transformer, high-tension circuit-breaker and fuse in the main transformer circuit, high-tension fuse in the lighting transformer circuit, contactors, motor fuses which also act as motor cut-outs, and low-tension fuses in the circuit energy to the control apparatus, and also a low-tension fuse in the circuit supplying energy to a fan for ventilating the motors. It is stated that the motors operate without objectionable sparking or excessive temperature rise at 2 ½ times the rated full-load torque. The auxiliary apparatus on the Westinghouse car comprises the main transformer, a lighting transformer, a so-called "preventive" coil, a high-tension circuit-breaker in the main circuit, fuses in the auxiliary high-tension and low-tension circuits, contactors and control gear. The motors are ordinary conductively-compensated series machines without any special commutating device other than the commutator resistance leads, the equipment as a whole being very simple and effective. The
· · [Missing text] · · |
Keywords: | Trolley Insulator |
Researcher notes: | |
Supplemental information: | |
Researcher: | Elton Gish |
Date completed: | October 13, 2010 by: Elton Gish; |