Switchboards for Power, Light and Railway Service, Direct and Alternating Current, High and Low TensionDerry-Collard Company, 1905 - 192 стор. |
З цієї книги
Результати 1-5 із 22
Сторінка 53
... insulation of the circuits before the current is turned on . The ground detector is not kept in service all the time , but is gen- erally connected permanently either to the ground or to the circuits and is provided with a small switch ...
... insulation of the circuits before the current is turned on . The ground detector is not kept in service all the time , but is gen- erally connected permanently either to the ground or to the circuits and is provided with a small switch ...
Сторінка 74
... and C2 . The effort of the designer should be directed toward so disposing the switches and instru- ments with which electrical connections have to be made 3 Insulation of switchboards . that these connections will afford all 74.
... and C2 . The effort of the designer should be directed toward so disposing the switches and instru- ments with which electrical connections have to be made 3 Insulation of switchboards . that these connections will afford all 74.
Сторінка 75
... insulate the bar from the switchboard , not only from the metallic parts thereof , but also from the slate or marble slabs which constitute the surface , al- though attachment to the marble slabs without insulation may be made if the ...
... insulate the bar from the switchboard , not only from the metallic parts thereof , but also from the slate or marble slabs which constitute the surface , al- though attachment to the marble slabs without insulation may be made if the ...
Сторінка 77
... insulation between H and B need not be provided ; that is , insulation at one point be- tween H and A is just as good as at another . The con- struction shown , however , is the simplest and strongest . Insulation between H and A is ...
... insulation between H and B need not be provided ; that is , insulation at one point be- tween H and A is just as good as at another . The con- struction shown , however , is the simplest and strongest . Insulation between H and A is ...
Сторінка 79
... insulated from each other can result in the de- struction of the generators , it follows that no construc- tion is proper that is in any way uncertain , and on this account the arrangement of Fig . 34 cannot be looked upon as desirable ...
... insulated from each other can result in the de- struction of the generators , it follows that no construc- tion is proper that is in any way uncertain , and on this account the arrangement of Fig . 34 cannot be looked upon as desirable ...
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Загальні терміни та фрази
alternating current ammeter amperes angle armature arranged branch circuits break switches bus bars cables carbon circuit breaker circuit connections close the circuit conducting bars conductors connected with bus construction cross section current passes current strength Derry Collard Derry Collard Co desired devices diagram distributing circuits double throw Electric equalizing bus equalizing wires erator feed field coils field regulator four fuse G Figure ground detector hence increased independent Independent Circuits instruments insulation lamps lever light board lightning arrester located lower machines magnet main switch marble slabs means meter nected Non-arcing metals operated panel Phase Switchboard rent resistance rheostats safety fuse seen series coils set of busses short circuit shown in Fig shows shunt single phase sockets spark street mains switch blade synchronizing three phase three-wire system tion transformers two-pole upper vapor vertical voltage voltmeter volts wattmeter Westinghouse