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 31
Сторінка 8
... this way the switch for opening the line came into use . Very early in the history of " arc " lighting it was discovered that unless the current remained practically uniform , the Voltmeter and ammeter . lamps would not burn steadily ; 8.
... this way the switch for opening the line came into use . Very early in the history of " arc " lighting it was discovered that unless the current remained practically uniform , the Voltmeter and ammeter . lamps would not burn steadily ; 8.
Сторінка 9
... voltmeter was introduced in such installations . In " arc " lighting the current remains of constant strength , therefore there is no danger of burning out the generator by overloading . In the incandescent lighting system the case is ...
... voltmeter was introduced in such installations . In " arc " lighting the current remains of constant strength , therefore there is no danger of burning out the generator by overloading . In the incandescent lighting system the case is ...
Сторінка 11
... voltmeter and a switch to open the circuit . To this we should also add switches for opening independently the several branch circuits . From Fig . I an idea of the de- vices and the manner in which they are connected can be obtained ...
... voltmeter and a switch to open the circuit . To this we should also add switches for opening independently the several branch circuits . From Fig . I an idea of the de- vices and the manner in which they are connected can be obtained ...
Сторінка 15
... ca- pacity is great , the series coils are placed in parallel , as in Fig . 10. In both these diagrams it will be seen that the voltmeter and the ammeter are connected in the A multi - polar generator . same way as in 15.
... ca- pacity is great , the series coils are placed in parallel , as in Fig . 10. In both these diagrams it will be seen that the voltmeter and the ammeter are connected in the A multi - polar generator . same way as in 15.
Сторінка 18
... voltmeter at V and the ammeter at Am . The main switch is shown at S , the circuit breaker at f , and the branch circuit switches at d d d . It will be evident at once that it is immaterial in what part of the engine or generator room ...
... voltmeter at V and the ammeter at Am . The main switch is shown at S , the circuit breaker at f , and the branch circuit switches at d d d . It will be evident at once that it is immaterial in what part of the engine or generator room ...
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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