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 25
Сторінка 42
... reduction in the number of instruments , it is better to provide one voltmeter for each generator and only one ammeter for the two . The best arrangement of all , is to provide a differential voltmeter , to be used for the purpose of ...
... reduction in the number of instruments , it is better to provide one voltmeter for each generator and only one ammeter for the two . The best arrangement of all , is to provide a differential voltmeter , to be used for the purpose of ...
Сторінка 51
... reduce the cost of construction to the lowest point . If the circuit wires are so located that there is more or less danger of their becoming crossed , short - circuited , etc. , then the construction of Fig . 22 is the proper one ...
... reduce the cost of construction to the lowest point . If the circuit wires are so located that there is more or less danger of their becoming crossed , short - circuited , etc. , then the construction of Fig . 22 is the proper one ...
Сторінка 69
... reduced . For any size of conductor greater than one - half of a square inch , flat bars can be used to better advantage than round wires , and they are more desirable from an elec- trical point of view , as they present a greater ...
... reduced . For any size of conductor greater than one - half of a square inch , flat bars can be used to better advantage than round wires , and they are more desirable from an elec- trical point of view , as they present a greater ...
Сторінка 71
... reduced . The main busses E ,, E , and C2 are also arranged so that one - half the current runs in each direction ; therefore , they need only be of sufficient ea- pacity to carry 2,000 amperes . The bars leading down from C D E , and ...
... reduced . The main busses E ,, E , and C2 are also arranged so that one - half the current runs in each direction ; therefore , they need only be of sufficient ea- pacity to carry 2,000 amperes . The bars leading down from C D E , and ...
Сторінка 72
... reduce it to 3 inches . The generator busses C D E and the main distributing busses E2 E3 C2 must have cross sections of 2 inches , and the bars d d d and d ' d ' d ' and the secondary busses E4 E5 C3 must have cross sec- tions of I ...
... reduce it to 3 inches . The generator busses C D E and the main distributing busses E2 E3 C2 must have cross sections of 2 inches , and the bars d d d and d ' d ' d ' and the secondary busses E4 E5 C3 must have cross sec- tions of I ...
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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