Switchboards for Power, Light and Railway Service, Direct and Alternating Current, High and Low TensionDerry-Collard Company, 1906 - 192 стор. |
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Сторінка 179
William Baxter. Lightning Arresters . A lightning arrester is a device used ... discharge pass through the arrester , and to the ground , but none of it ... lightning . as the resistance of these 179.
William Baxter. Lightning Arresters . A lightning arrester is a device used ... discharge pass through the arrester , and to the ground , but none of it ... lightning . as the resistance of these 179.
Сторінка 182
... Lightning discharges are prevented from passing through the wire coils wound ... discharge will break through the insulation at this point and pass to ground ... lightning arrester illustrated in Fig . 143 cannot be used for circuits in ...
... Lightning discharges are prevented from passing through the wire coils wound ... discharge will break through the insulation at this point and pass to ground ... lightning arrester illustrated in Fig . 143 cannot be used for circuits in ...
Сторінка 183
... lightning discharge passes , the generator current persists in fol- lowing , then the fuse wire through which it passes will be melted and thus the air will widen out and finally become so long that the current will break . After the ...
... lightning discharge passes , the generator current persists in fol- lowing , then the fuse wire through which it passes will be melted and thus the air will widen out and finally become so long that the current will break . After the ...
Сторінка 184
... lightning arresters are combined with a reactive , or choking coil , to render them more effective . The reactance of the coil k acts to prevent the lightning from passing through and thus helps the discharge to break across the air gap ...
... lightning arresters are combined with a reactive , or choking coil , to render them more effective . The reactance of the coil k acts to prevent the lightning from passing through and thus helps the discharge to break across the air gap ...
Сторінка 185
... lightning arrester . The magnet M , which is wound with rather large wire , is connected with the main ine . When a lightning discharge passes to ground it C ELECTRIC & MANCO PIT / SEURO . WURT : TANLIGHTNING ARRETER PATO JUNE 01332 ...
... lightning arrester . The magnet M , which is wound with rather large wire , is connected with the main ine . When a lightning discharge passes to ground it C ELECTRIC & MANCO PIT / SEURO . WURT : TANLIGHTNING ARRETER PATO JUNE 01332 ...
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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