Not sure, but check into Light Rail. They use 600Vac (I believe) and use
the natural insulating qualities of concrete (where the rails are placed) to
give fairly good isolation from ground.
>From memory - the rails are the return terminal.
- Robert -
-
>
>Hello all,
>
>I have a very innovative engineer who has come up with a design idea that
>uses concrete as an insulating compound in a very large inductor for a 200
>kW switching power supply. Yup, this is the stuff you buy down at the
local
>building supply company. He was very proud of the idea, but until he came
>up with it I think he was pretty desperate. I'm thinking I should make him
>desperate again but would like to be able to give him a clearly
reasoned-out
>explanation.
>
>Has anyone ever had experience with using concrete or mortar in a high
>voltage application? What are the concerns here? It is my understanding
>that it does not actually "dry" but it cures with all the water contained
>inside.
>
>
>thanks,
>
>
>
>
>-doug
>
>=======================================
>Douglas E. Powell, Compliance Engineer
>Advanced Energy Industries, Inc.
>1625 Sharp Point Dr.
>Fort Collins, Colorado 80525 USA
>---------------------------------------
>970-407-6410 (phone)
>970-407-5410 (e-fax)
>mailto:doug.pow...@aei.com <mailto:doug.pow...@aei.com>
>http://www.advanced-energy.com <http://www.advanced-energy.com/>
>=======================================
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