Switchboards for Power, Light and Railway Service, Direct and Alternating Current, High and Low TensionDerry-Collard Company, 1906 - 192 стор. |
З цієї книги
Результати 1-5 із 26
Сторінка 8
... desired to suspend the lights for only a few minutes . In 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 uniforın ...
... desired to suspend the lights for only a few minutes . In 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 uniforın ...
Сторінка 11
... desired voltage , even if the velocity is somewhat varied , a device is provided by means of which the pressure may be increased or decreased without changing the velocity . This device is simply a resistance , or rheostat , and is ...
... desired voltage , even if the velocity is somewhat varied , a device is provided by means of which the pressure may be increased or decreased without changing the velocity . This device is simply a resistance , or rheostat , and is ...
Сторінка 14
... desired . In Feg . 6 the shunt coils lead off from the ends of the series coils , thus shunting these coils as well as the armature . This is called the long shunt . Sometimes the shunt coils as well as the series are connected ...
... desired . In Feg . 6 the shunt coils lead off from the ends of the series coils , thus shunting these coils as well as the armature . This is called the long shunt . Sometimes the shunt coils as well as the series are connected ...
Сторінка 18
... desired . As to the switches d d d , it is not neces- sary that they should even be in the same room as the generator , for they can be placed at the points where the several circuits branch off . It can be readily realized , however ...
... desired . As to the switches d d d , it is not neces- sary that they should even be in the same room as the generator , for they can be placed at the points where the several circuits branch off . It can be readily realized , however ...
Сторінка 21
... desired to stop the current , the switch S is opened , and unless the current is not to be used for sev- eral hours , it is unnecessary to stop the generator . If we desire to stop the flow of current in any one of the dis- tributing ...
... desired to stop the current , the switch S is opened , and unless the current is not to be used for sev- eral hours , it is unnecessary to stop the generator . If we desire to stop the flow of current in any one of the dis- tributing ...
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Загальні терміни та фрази
alternating current ammeter amperes angle armature arranged branch circuits break switches bus bars cables 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 ground detector h Figure hence increased independent instruments insulation lamps lever light board lightning arrester lightning discharge located lower machines magnet main switch marble slabs means meter nected opening the circuit operated panel placed plugs rent resistance rheostats safety fuse seen series coils set of busses short circuit shown in Fig shows shunt sockets spark street mains switch blade switch is closed synchronizing three phase three-wire system tion transformers two-pole upper vapor vertical voltage voltmeter volts wattmeter Westinghouse