Switchboards for Power, Light and Railway Service, Direct and Alternating Current, High and Low TensionDerry-Collard Company, 1905 - 192 стор. |
З цієї книги
Результати 1-5 із 16
Сторінка 75
... marble slabs which constitute the surface , al- though attachment to the marble slabs without insulation may be made if the voltage is not over 110 and the installa- tion is of small capacity , say , under 100 horse - power . Marble and ...
... marble slabs which constitute the surface , al- though attachment to the marble slabs without insulation may be made if the voltage is not over 110 and the installa- tion is of small capacity , say , under 100 horse - power . Marble and ...
Сторінка 77
... marble slab . The conductor H must be insulated from the clamps B and F , and from the bolts g , so that there may be no electrical connection between it and C or A. Since the object of the insulation is to separate , electrically , H ...
... marble slab . The conductor H must be insulated from the clamps B and F , and from the bolts g , so that there may be no electrical connection between it and C or A. Since the object of the insulation is to separate , electrically , H ...
Сторінка 78
... marble or slate slab B. The slab B is secured to the framing A by the bolts e , and H is secured to B by the bolts d . As marble and slate are both brittle , it is not safe to depend upon the slab B to hold H , for if the pressure of ...
... marble or slate slab B. The slab B is secured to the framing A by the bolts e , and H is secured to B by the bolts d . As marble and slate are both brittle , it is not safe to depend upon the slab B to hold H , for if the pressure of ...
Сторінка 80
... Alloy , the contact surfaces may be reduced to one square inch per 1000 amperes without danger of heating and a permanent joint of very low resistance obtained . 80 Switchboard construction . the marble slabs join . These angle.
... Alloy , the contact surfaces may be reduced to one square inch per 1000 amperes without danger of heating and a permanent joint of very low resistance obtained . 80 Switchboard construction . the marble slabs join . These angle.
Сторінка 81
William Baxter. Switchboard construction . the marble slabs join . These angle iron bars run down to the floor and thus form the legs of the structure . If the board is so small that it can be made of a single slab W A ש Figure 35 ...
William Baxter. Switchboard construction . the marble slabs join . These angle iron bars run down to the floor and thus form the legs of the structure . If the board is so small that it can be made of a single slab W A ש Figure 35 ...
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Загальні терміни та фрази
alternating current ammeter amperes angle armature arranged branch circuits break switches bus bars cables carbon 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 G Figure 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 synchronizing three phase three-wire system tion transformers two-pole upper vapor vertical voltage voltmeter volts wattmeter Westinghouse