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 22
Сторінка 23
... lower center contact of the same switch . The main switch is of the type called double - throw , that is , it can be thrown to the right or left . When thrown to the right the current passes to the right side contacts , and from here to ...
... lower center contact of the same switch . The main switch is of the type called double - throw , that is , it can be thrown to the right or left . When thrown to the right the current passes to the right side contacts , and from here to ...
Сторінка 31
... lower ends of the two series coils are connected with each other , and that this is also the case with the upper ends . As m and m ' are of the same resistance , or nearly so , in generators of the same size , the current coming through ...
... lower ends of the two series coils are connected with each other , and that this is also the case with the upper ends . As m and m ' are of the same resistance , or nearly so , in generators of the same size , the current coming through ...
Сторінка 36
... lower set of busses , but if the switch S " is open , the cur- rent cannot pass to the external circuit . When this switch is closed to the left side , as shown in the diagram , the cur- rent from bus N will pass to the top and bottom ...
... lower set of busses , but if the switch S " is open , the cur- rent cannot pass to the external circuit . When this switch is closed to the left side , as shown in the diagram , the cur- rent from bus N will pass to the top and bottom ...
Сторінка 38
... lower one , marked 3 , connects with the main switches S1 and S2 , and through wires d d ' which will be recognized at once as the equalizing wire , that is , wires dd ' together with bus 3 , constitute the equalizing wire . These ...
... lower one , marked 3 , connects with the main switches S1 and S2 , and through wires d d ' which will be recognized at once as the equalizing wire , that is , wires dd ' together with bus 3 , constitute the equalizing wire . These ...
Сторінка 40
... lower set of busses , marked A. If either switch is thrown to the opposite side it will connect its generator with the top busses B. Both generators can be connected with the top busses and either one can be connected with either set of ...
... lower set of busses , marked A. If either switch is thrown to the opposite side it will connect its generator with the top busses B. Both generators can be connected with the top busses and either one can be connected with either set of ...
Інші видання - Показати все
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