[time-nuts] GPS locked 60Hz?
Bob Camp
lists at rtty.us
Sun Jul 28 01:36:50 UTC 2013
Hi
It turns out that if you have a network with a *lot* of sources and a *lot* of loads and a *lot* of interconnects, you would need a *large lot* of light bulbs….
Bob
On Jul 27, 2013, at 9:32 PM, Gordon Batey <gpbatey at wildblue.net> wrote:
>
> 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 <albertson.chris at gmail.com>
> To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Subject: Re: [time-nuts] GPS locked 60Hz?
> Message-ID:
> <CABbxVHvZc6hQYmWWP_=ptbZGojWGA95YsZj1BLwOu-yYUzMfNw at 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.
>
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