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Sheetal.Pandey
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Re: HVDC advantage
Sheetal.Pandey   7/8/2013 9:21:07 AM
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Its nice to see Google getting into the power game. If someone thinks Google is just a search engine, its time to rethink.

przem
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HVDC advantage
przem   7/5/2013 3:17:50 PM
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The main advantage of HVDC, and the reason it rules for undersea/underground cables is that it requires less insulation. HVAC must be insulated to peak line voltage equal to 1.42 times the rated line voltage spec.

For overground lines this is not a problem---just space the lines out a little more. For a compact cable however this leads to huge cost savings.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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