Path: csiph.com!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Daniel65 Newsgroups: aus.electronics Subject: Re: Just for your information ..... Date: Sat, 6 Jan 2024 20:37:23 +1100 Organization: A noiseless patient Spider Lines: 32 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Sat, 6 Jan 2024 09:37:26 -0000 (UTC) Injection-Info: dont-email.me; posting-host="bff23aa0f6b9452ced0e58734776b05d"; logging-data="596800"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19w7NSJRU9xurImx43GJX5bVHPDgBlUTXA=" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 SeaMonkey/2.53.18 Cancel-Lock: sha1:xU0IF6cBSXCuXpty2F60NKI1BA0= In-Reply-To: Xref: csiph.com aus.electronics:35705 Phil Allison wrote on 6/1/24 1:41 pm: > ** In order for a solar system to power a premises during a > blackout, the AC supply line must be disconnected first. Otherwise > the solar system will try to power the whole neighborhood and also > electrify cables that are expected to be dead by electrical workers. AH!! Brings back 'fond' memories!! I was in the Army for twenty years, in R.A.Signals. At one time, maybe late 70's, I was at the H.F. Transmitter Station at Digger's Rest, Victoria. One evening, the Mains died, so one of three 300KVA Blackstone Diesels started up, as it should, but the lights, etc., were cycling on and off, on and off. As were the lights, etc., in the homes at Diggers Rest. Seems, rather than losing the three phase mains, we had lost the Neutral line, so the Generator started up as it "should" .... but, with-out the Neutral to reference, the Phase Voltages were wandering all over the place. And the Three Phase supply hadn't been 'lost', so the Mains CCT Breakers hadn't dropped out, so the Army Camp was trying to supply "wobbly" three phase power out into the real world. Opps!! -- Daniel