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 18
Сторінка 53
... but if there are four , six or more machines , then there will be more or less complication , for we will have to divide the generators into two groups , each one of as nearly the same ampere capacity as pos- h A Am 1 S S D 1 2 3 53.
... but if there are four , six or more machines , then there will be more or less complication , for we will have to divide the generators into two groups , each one of as nearly the same ampere capacity as pos- h A Am 1 S S D 1 2 3 53.
Сторінка 57
... capacity . If we have three generators they cannot be connected into a three - wire system , unless one machine has double the capacity of the others , that is , in amperes . If there are four machines , these can be divided into two ...
... capacity . If we have three generators they cannot be connected into a three - wire system , unless one machine has double the capacity of the others , that is , in amperes . If there are four machines , these can be divided into two ...
Сторінка 58
... capacity of 1,000 amperes each and 250 volts electromotive force so as to distribute into a system of circuits , twelve of which are controlled directly and independently from the board , the others be- ing also controlled from the ...
... capacity of 1,000 amperes each and 250 volts electromotive force so as to distribute into a system of circuits , twelve of which are controlled directly and independently from the board , the others be- ing also controlled from the ...
Сторінка 62
... capacity , compared with the instruments that meas- ure the main currents . The connections on switchboards are generally made with bars that have a cross section of I square inch for each 1,000 amperes , and from this it can be seen ...
... capacity , compared with the instruments that meas- ure the main currents . The connections on switchboards are generally made with bars that have a cross section of I square inch for each 1,000 amperes , and from this it can be seen ...
Сторінка 66
... capacity is not required . Suppose that at some time a small number of lights were in use on all the various branches of the system , but not enough in the aggregate to absorb more than a portion of the ca- pacity of one generator , and ...
... capacity is not required . Suppose that at some time a small number of lights were in use on all the various branches of the system , but not enough in the aggregate to absorb more than a portion of the ca- pacity of one generator , and ...
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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 four fuse ground detector h Figure hence increased independent instruments insulation lamps lever light board lightning arrester lightning discharge located lower machines magnet main switch marble slabs means meter nected opening the circuit operated panel placed plugs rent resistance rheostats safety fuse seen series coils set of busses short circuit shown in Fig shows shunt sockets spark street mains switch blade switch is closed synchronizing three phase three-wire system tion transformers two-pole upper vapor vertical voltage voltmeter volts wattmeter Westinghouse