Switchboards for Power, Light and Railway Service, Direct and Alternating Current, High and Low TensionDerry-Collard Company, 1906 - 192 стор. |
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Результати 1-5 із 13
Сторінка 62
... inch for each 1,000 amperes , and from this it can be seen that to connect ammeters of large capacity directly in the circuit would require the use of large con- ductors . When the shunts St are used , the current pass- ing to the ...
... inch for each 1,000 amperes , and from this it can be seen that to connect ammeters of large capacity directly in the circuit would require the use of large con- ductors . When the shunts St are used , the current pass- ing to the ...
Сторінка 68
... inch . If the capacity of the plant is not over two or three hun- dred amperes it can be readily seen that the ... inches . In manufacturing establishments 500 horse - power is not con- sidered a large plant ; in fact , it is smaller ...
... inch . If the capacity of the plant is not over two or three hun- dred amperes it can be readily seen that the ... inches . In manufacturing establishments 500 horse - power is not con- sidered a large plant ; in fact , it is smaller ...
Сторінка 69
... inch per 1,000 amperes , then the range of cross sections for the switchboards of industrial installations will be from I to 15 or 20 square inches . Unless the current is used for chemical processes the cross sections will not very ...
... inch per 1,000 amperes , then the range of cross sections for the switchboards of industrial installations will be from I to 15 or 20 square inches . Unless the current is used for chemical processes the cross sections will not very ...
Сторінка 72
... inches , but as they are very short we can d O g Figure 29. Method of clamping bus bars . 2 safely reduce it to 3 inches . The generator busses C D E and the main ... inch . 2 Figure 30 . Increasing radi- ating surface . Radiating 72.
... inches , but as they are very short we can d O g Figure 29. Method of clamping bus bars . 2 safely reduce it to 3 inches . The generator busses C D E and the main ... inch . 2 Figure 30 . Increasing radi- ating surface . Radiating 72.
Сторінка 73
... inch of cross section , but if the current is 4,000 amperes the bars will be estimated on the basis of 1,000 amperes per square inch . In the latter case the increased current den- sity will result in generating more heat , and in order ...
... inch of cross section , but if the current is 4,000 amperes the bars will be estimated on the basis of 1,000 amperes per square inch . In the latter case the increased current den- sity will result in generating more heat , and in order ...
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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