Surgeguard
By kenputer, Section Controls Posted on Fri Nov 23, 2007 at 12:11:38 PM MST
would these units help inverter shut down

I saw this unit listed on ebay Item number: 110194599110 says it is a good to control high voltage from wind turbine it is called a Surgeguard made by calterm.   Anyone know if these would be usefull or cause problems.   They are spose to send excess voltage to ground. Thanks Ken

Surgeguard | 3 comments (3 topical)

Re: Surgeguard (3.00 / 0) (#1) by snowcrow on Fri Nov 23, 2007 at 07:29:23 AM MST

Hi Ken, I don't think I trust that on my system as a lightning arrestor, if that is what you are look for to protect your wind turbine?  I can't see how that two lead, pole to pole, little black box would do anything but short out the battery the first time you get a surge?!  I may be wrong?  Just "Beware of the little black box" thing-ees, they're not alway the best choice (:o !!   I am using a Delta LA302DC lightning arrestor on my system.  It has three leads, positive, negative, and a ground, where any surge is suppose to go!!  Its rated for handling 60,000 amps and its clamping time is 5 to 25 nanoseconds.  It cost about $50, but its a well known maker so you can be sure you are getting your moneys worth!! Blessings, Snow Crow

Re: Surgeguard (3.00 / 0) (#2) by wooferhound on Fri Nov 23, 2007 at 08:48:23 AM MST

It says that it sends excess voltage to ground, but it doesn't have a ground wire, just a positive and a negative wire. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110194599110&ru=http%3A%2F%2Fsearch.ebay. com%3A80%2Fsearch%2Fsearch.dll%3Ffrom%3DR40%26_trksid%3Dm37%26satitle%3D110194599110%26category0%3D% 26fvi%3D1 W o o f -={(

Re: Surgeguard (3.00 / 0) (#3) by Ungrounded Lightning Rod on Fri Nov 23, 2007 at 02:36:51 PM MST

I smell snake oil. Battery chemistries are themselves very good protection against "voltage spikes".  Anything that makes a "spike" big enough to hurt the battery seems likely to make that box or its lead wires explode. Spikes are more of an issue for electronics.  But that's mainly a problem if the battery has come unhooked.  So mounting a surge protector on the battery looks like a good way to insure it's not hooked up when needed.

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