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 41
Сторінка 11
... means of which the pressure may be increased or decreased without changing the velocity . This device is simply a resistance , or rheostat , and is called a field regulator . If the voltage of the generator is too high , a sufficient ...
... means of which the pressure may be increased or decreased without changing the velocity . This device is simply a resistance , or rheostat , and is called a field regulator . If the voltage of the generator is too high , a sufficient ...
Сторінка 27
... means that will prevent one of the generators from taking more than its share of the load . If the machines are of the simple shunt - wound type , nothing can be done to equalize the work between them , except to adjust the field regu ...
... means that will prevent one of the generators from taking more than its share of the load . If the machines are of the simple shunt - wound type , nothing can be done to equalize the work between them , except to adjust the field regu ...
Сторінка 36
... means of the switch s , and also with the busses N and P , as is clearly shown by the wires v v , v ′ v ' , v " v " . Under the ordinary running conditions , the voltmeter is connected with the busses , and the switch s , when turned to ...
... means of the switch s , and also with the busses N and P , as is clearly shown by the wires v v , v ′ v ' , v " v " . Under the ordinary running conditions , the voltmeter is connected with the busses , and the switch s , when turned to ...
Сторінка 38
... means of which the ammeter may be connected with each generator independently , when desired , so that the strength of each current may be determined . While we have shown two ammeters in Fig . 21 we have only pro- vided one voltmeter ...
... means of which the ammeter may be connected with each generator independently , when desired , so that the strength of each current may be determined . While we have shown two ammeters in Fig . 21 we have only pro- vided one voltmeter ...
Сторінка 40
... means of the field regulator to the proper point . This much being done , the circuit breaker of the second ma- chine is closed , and then the voltage developed by the armature is indicated notwithstanding that the main switch is opened ...
... means of the field regulator to the proper point . This much being done , the circuit breaker of the second ma- chine is closed , and then the voltage developed by the armature is indicated notwithstanding that the main switch is opened ...
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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