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 9
... increased , the current will become strong enough to burn out the generator , providing there is enough power behind ... increases with the current , and when the predetermined point is reached , the device acts , as at that point the ...
... increased , the current will become strong enough to burn out the generator , providing there is enough power behind ... increases with the current , and when the predetermined point is reached , the device acts , as at that point the ...
Сторінка 11
... 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 portion of the regulator resist- ance ...
... 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 portion of the regulator resist- ance ...
Сторінка 20
... increased , and the s ' switches can be placed in two or three rows one above the other . An incan- descent lamp placed at k serves to illuminate the board so that the attendant may be able to see the position of the switches and take ...
... increased , and the s ' switches can be placed in two or three rows one above the other . An incan- descent lamp placed at k serves to illuminate the board so that the attendant may be able to see the position of the switches and take ...
Сторінка 31
... increased strength of the field . When the wires d d ' , b b ' and c are added , which are called the equalizing con- nection , the current generated by the two machines is equally divided between the two series coils m and m ' , and ...
... increased strength of the field . When the wires d d ' , b b ' and c are added , which are called the equalizing con- nection , the current generated by the two machines is equally divided between the two series coils m and m ' , and ...
Сторінка 69
... increased , and thus the current strength reduced . For any size of conductor greater than one - half of a square inch , flat bars can be used to better advantage than round wires , and they are more desirable from an elec- trical point ...
... increased , and thus the current strength reduced . For any size of conductor greater than one - half of a square inch , flat bars can be used to better advantage than round wires , and they are more desirable from an elec- trical point ...
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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