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 23
Сторінка 11
... 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 is thrown into the circuit of the generator field coils to bring it down to ...
... 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 is thrown into the circuit of the generator field coils to bring it down to ...
Сторінка 20
... resistance , and as it measures the strength of the cur- rent , all the current must pass through it ; but the volt- meter measures the pressure ; hence , it must be acted upon by the total pressure , and to be so acted upon , it must ...
... resistance , and as it measures the strength of the cur- rent , all the current must pass through it ; but the volt- meter measures the pressure ; hence , it must be acted upon by the total pressure , and to be so acted upon , it must ...
Сторінка 21
... resistance is very high . In Fig . 11 the voltmeter wires connect with the busses g and h , but these , as will be found by tracing the wires , are the two sides of the circuit , just as the wires N and P in Fig . 1 are . The ...
... resistance is very high . In Fig . 11 the voltmeter wires connect with the busses g and h , but these , as will be found by tracing the wires , are the two sides of the circuit , just as the wires N and P in Fig . 1 are . The ...
Сторінка 31
... resistance , or nearly so , in generators of the same size , the current coming through wire N will divide upon reaching n , one half passing to m , by wire a , and the other half to m ' , by wire a ' . Through wires b and b ' the ...
... resistance , or nearly so , in generators of the same size , the current coming through wire N will divide upon reaching n , one half passing to m , by wire a , and the other half to m ' , by wire a ' . Through wires b and b ' the ...
Сторінка 73
... such degree as to materi- ally increase the electrical resistance they are laminated so as to increase the radiating surface ; hence the construction shown in Figs . 30 and 31 . Laminated bus bars . If Fig . 27 is closely 73.
... such degree as to materi- ally increase the electrical resistance they are laminated so as to increase the radiating surface ; hence the construction shown in Figs . 30 and 31 . Laminated bus bars . If Fig . 27 is closely 73.
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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 Figure four fuse 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 switch S2 synchronizing three phase three-wire system tion transformers upper vapor vertical voltage voltmeter volts wattmeter Westinghouse