Re: getting high voltage from the high voltage lines? (fwd)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>

> I think that really high power transmitters do actually get supplied at
> primary or distribution voltages (i.e. 14 kV+), but there's still a
> transformer between utility and load.  I'll check with the Deep Space
> Network guys at work.. they have multiple 400 kW transmitters, etc..  The
> losses in 480V switchgear and wiring would be fairly high..
 
> Mining operations do a lot at 2400V, from what I understand.  Again, these
> are multi MVA kinds of operations.  BIG Electric furnaces (like those used
> for melting steel) probably also work at distribution voltages.

	The supply is at whatever us suitable to the local
	grid (for enough load higher lines may be run in0.
	An arc furnace itself runs at 40V or so at O_My_Word
	amps.)

	best
	dwp

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	Vernor Vinge
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	-me