Greetings, Actually it requires TWO light bulbs in series (or one bulb with a twice the voltage rating). They usually use TWO standard bulbs in series for EACH phase line. This gives an immediate indication that the phase rotation is correct. I have actually seen it done about 12 years ago to sync three emergency generators with each other and then the power grid and then take over the load and disconnect the grid. All done by hand and very carefully. It was a US Navy hospital situation.
Gordon WA4FJC ------------------------------ Message: 6 Date: Sat, 27 Jul 2013 16:46:01 -0700 From: Chris Albertson <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] GPS locked 60Hz? Message-ID: <CABbxVHvZc6hQYmWWP_=ptbzgojwga95yszj1blwou-yyuzm...@mail.gmail.com> Content-Type: text/plain; charset=windows-1252 The old time (stone age) method of setting the phase of a power generator was easy: Get an ordinary light bulb and connect it between the grid and your generator, Adjust the phase of your generator until the bulb goes dim. When the bulb is 100% dead out then flip the switch and connect the load. They had it a lot easier before there were computers and good instruments. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
