[RE-wrenches] ground fault troubleshooting

2010-09-07 Thread Kent Osterberg
Matt, I agree with you on about 98% of this. You are 200% correct that a faulted high-voltage or high-current PV array is a serious and dangerous situation and that the person looking for the trouble in a faulted PV array needs the proper tools and knowledge of how all the components work.

Re: [RE-wrenches] Sunny Backup set

2010-09-07 Thread Glenn Burt
Ask them how the listing of the 240VAC Sunny Island is coming - another promise I have customers waiting for - 'real soon now'. -Glenn -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of North Texas Renewable

Re: [RE-wrenches] 1.56 ISC Minimum OCP is STUPID! (Was: ground fault troubleshooting)

2010-09-07 Thread Kent Osterberg
Matt, There is a word on the KLKD time delay chart you referenced that is hiding a very important fact. Those are "average" curves. To illustrate what that means take a look at the time delay curve for the CBI breaker commonly used for battery charging systems. There is a gray area that