Surgeguard

[kenputer]

 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

[snowcrow]

  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 ( !!

  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

[wooferhound]

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

[Ungrounded Lightning Rod]

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.