. The Street railway journal . FIG. 8.—INSTRUMENT STAND tion. The valves automatically exhaust the cylinders afterthe breaker is fully closed. In addition to the automatictripping device mentioned, the breaker can be opened fromthe controlling platform, an electromagnet acting on thetripping mechanism being provided for this purpose. Fig. 2 illustrates a three-pole, double-break automaticoil circuit breaker operated by means of switch has all live metal parts completely immersed inoil, of which only a relatively small amount is switch is held open by gravity. P
. The Street railway journal . FIG. 8.—INSTRUMENT STAND tion. The valves automatically exhaust the cylinders afterthe breaker is fully closed. In addition to the automatictripping device mentioned, the breaker can be opened fromthe controlling platform, an electromagnet acting on thetripping mechanism being provided for this purpose. Fig. 2 illustrates a three-pole, double-break automaticoil circuit breaker operated by means of switch has all live metal parts completely immersed inoil, of which only a relatively small amount is switch is held open by gravity. Provision is made foreasily removing the oil tanks for repairs and inspection. The switch is erected in a masonry structure, with eachpole of the switch and the oil tank in which it is immersedin a separate fire-proof compartment. There are two sta-tionary contacts per pole, one connected to the incoming.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
