These were very popular in Kenya where black-outs, drop-outs, brown-outs, high surges
and spikes were common:
http://www.sollatek.com/product-list/voltshield/
http://www.sollatek.com/product-list/voltsafe/

Many fridges, freezers and all household equipment is saved using the plug-in units. It was typical for the mains to read 400V (240V nom) when the power returned after a drop out and the little units would just hold off the load till those passed and a timer dropped back on.

David
G3UNA

----- Original Message ----- From: "AG0N-3055" <[email protected]>
To: "elecraft" <[email protected]>
Sent: Friday, February 01, 2013 10:29 PM
Subject: Re: [Elecraft] [OT} Whole House Surge Protection


On Fri, 1 Feb 2013 11:59:00 -0600, Richard Fjeld wrote:

I built a box with an AC relay that locks up through it's own contacts.

Did the same thing, except that the path also goes through a timer relay
that doesn't energize the AC path relay until power has been on for at
least 30 seconds without interruption.

Gary
--
http://ag0n.net
3055: http://ag0n.net/irlp/3055

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