Smaller versions of lightning arresters, also called surge protectors, are devices that are connected between each electrical conductor in power and communications systems and the Earth.
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Lightning arresters are rated by the peak current they can withstand, the amount of energy they can absorb, and the breakover voltage that they require to begin conduction.
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Amtrak will quickly install lightning arresters so that track signals will not be knocked out by summer storms, and rock slides in Connecticut will be remedied by the fall.
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A surge arrester ( also called a lightning arrester ) may also be installed between the line ( ahead of the cutout ) and the ground wire for lightning protection.
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In real life there would usually be a third lightning arrester that would limit the line-to-line voltage to 2kV .-- talk ) 22 : 37, 2 March 2013 ( UTC)
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Lightning arresters built for power substation use are immense devices, consisting of a porcelain tube several feet long and several inches in diameter, typically filled with discs of zinc oxide.
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The first was when it got struck by lightning-silly me, I neglected to get a lightning arrester and forgot to disconnect the phone line from my modem when not in use.
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Other designs of lightning arresters use a glow-discharge tube ( essentially like a neon glow lamp ) connected between the protected conductor and ground, or voltage-activated solid-state switches called varistors or MOVs.
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Now add a lightning arrester from each line to earth ground that limits the voltage to 2kV . Those lightning arresters would also limit the voltage between the two conductors to 4kV.
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Now add a lightning arrester from each line to earth ground that limits the voltage to 2kV . Those lightning arresters would also limit the voltage between the two conductors to 4kV.
