. Electrical world. FIG. 4.— TELL-TALE BOARD INTERRUFTERS. Two Other rotao converters are provided for charging the storagebattery plant that operates the selectors. In addition to these, twosets of motors and generators provide the alternating current forthe magneto bells, and a third of similar style but smaller is pro-vided for the night service. An important piece of apparatus in thisdepartment is the interrupter and its reserve duplicate. These are. FIG. 5.—TEMPORARY WORK TO FACILITATE THE CUT-OVER. contained in a glass case, and are revolving commutators of specialdesign
. Electrical world. FIG. 4.— TELL-TALE BOARD INTERRUFTERS. Two Other rotao converters are provided for charging the storagebattery plant that operates the selectors. In addition to these, twosets of motors and generators provide the alternating current forthe magneto bells, and a third of similar style but smaller is pro-vided for the night service. An important piece of apparatus in thisdepartment is the interrupter and its reserve duplicate. These are. FIG. 5.—TEMPORARY WORK TO FACILITATE THE CUT-OVER. contained in a glass case, and are revolving commutators of specialdesign that furnish the intermitting or pulsating storage battery cur-rent that operates the rotating, trunk-selecting arms of the selectorswitches. The interruptors contain also a device which produces thecurrent that gives the busy test, or busy buzz, as it is electric motors revolve the commutators of these interruptingmachines. A handsome marble panel switchboard is provided nearbyupon which are mounted the switches, volt- and ampere-meters,lightning arresters and other accessories of the generating plant. A 174 ELECTRICAL WORLD and ENGINEER. Vol. XLIII, No. 4- tell-tale board stands not far distant from this, upon which areminiature lamps and a magneto bell to detect and locate groundedlines. At a glance the switch room employees can tell in what set of100 selectors one may be found in which the delicate protector fuseis blown. Across the hall is th
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
