I would think that an ohmmeter set to the 10 Mega-ohm setting (or the highest setting possible), would be the first test. I would like to see something on the order of 750 k-ohms (3/4 of a mega-ohm).
But the system should be tested at a higher voltage, than that available from a DMM. Apply 240 Vac and measure the RMS current. It should be should be 0.3 mA or less. Finally, these puppies really need to be tested at much higher voltages, perhaps someone knows how to use that megohmmeter to test? What does the manu recommend, if suspect, throw it away and buy a new one? - Peter Peter T. Parrish, Ph.D., President California Solar Engineering, Inc. 820 Cynthia Ave., Los Angeles, CA 90065 CA Lic. 854779, NABCEP Cert. 031806-26 [email protected] Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885 ________________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Kristopher Schmid Sent: Tuesday, August 24, 2010 1:30 PM To: 'RE-wrenches' Subject: [RE-wrenches] Testing LSAs What is the best method for testing the integrity of a DC and/or AC lightning surge arrestor? Specifically, i use the Delta LA units. I know they should be replaced if they look Bar-B-Qued, but otherwise...? Thanks, Kris Schmid Legacy Solar 864 Clam Falls Trail Frederic, WI 54837 715-653-4295 [email protected] www.legacysolar.com _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
