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 15
Сторінка 25
... turned on or off without any danger of unbalancing the system , while with the three- wire system such unbalancing is possible , and in small in- stallations very probable . When a building is wired so as to be supplied from the street ...
... turned on or off without any danger of unbalancing the system , while with the three- wire system such unbalancing is possible , and in small in- stallations very probable . When a building is wired so as to be supplied from the street ...
Сторінка 34
... turned on at once . From the explanation which follows , the manner in which these results are attained will be understood . As was explained in the last section , it is necessary when two or more generators are operated in parallel ...
... turned on at once . From the explanation which follows , the manner in which these results are attained will be understood . As was explained in the last section , it is necessary when two or more generators are operated in parallel ...
Сторінка 36
... turned to make this connection , disconnects the wires leading to the two generators . If one generator is running , and it is de- sired to throw the other into service , it must be set in motion and its voltage brought up to equality ...
... turned to make this connection , disconnects the wires leading to the two generators . If one generator is running , and it is de- sired to throw the other into service , it must be set in motion and its voltage brought up to equality ...
Сторінка 37
... distributing system can be fed from the two generators , or from the street mains , by turning the switch S " in one direction or the other . When the street connection is not 1 More about instruments . made , the arrangement is 37.
... distributing system can be fed from the two generators , or from the street mains , by turning the switch S " in one direction or the other . When the street connection is not 1 More about instruments . made , the arrangement is 37.
Сторінка 43
... turned off a certain portion at a certain hour and that we be able to turn it off from the switchboard . If such be the case , the connections must be such as to enable us to accomplish the result . Again , it may be required to control ...
... turned off a certain portion at a certain hour and that we be able to turn it off from the switchboard . If such be the case , the connections must be such as to enable us to accomplish the result . Again , it may be required to control ...
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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