[time-nuts] No more 60Hz! TEC Elimination

[J. Forster]

I'd severly doubt they'd allow anything like 10%.

Also remember that the peak flux, that determins saturation, is the
integral of I dT, so you can run a 60 Hz transformer at 50 Hz if you
reduce the input to 100 VAC instead of 120 VAC.

-John

===================


> We have AEP here, but it's like you said, go out in the country where
> Buckeye Rual Elect. is, and you have outages all the time, and you don't
> want to live there in the winter.
>
> Clocks is not what I'm concerned over as much as certain pieces of
> industrial equipment that must rotate at a certain speed, or are supposed
> to. Also, if they are going to allow the frequency to get slower, any
> motor, or transformer, needs more iron in it, and just a 10 Hz difference
> is enough to amount to a significant increase in iron. One can easily use
> a
> 50 Hz transformer on 60 Hz, but not a 60 Hz on 50 Hz. The speed difference
> in motors from 50 Hz to 60 Hz would be around 1.2%, just roughly guessing
> it in my head, at 1800 RPM, and we don't know how much they intend to
> allow
> it to vary.
>
> Best,
>
> Will
>
> *********** REPLY SEPARATOR  ***********
>
> On 6/24/2011 at 6:33 PM gary wrote:
>
>>It all depends where you live. I know people that get an outage a week,
>>so setting clocks is a way of life.
>>
>>PGE, bless their corporate hearts, is run both like a Swiss clock and
>>third world nation power. If you have a fair amount of industry or malls
>>nearby (i.e. customers), your power is great. Live at the edge of town,
>>and things are not so good, even in Silicon Valley. Monte Sereno, Monta
>>Vista (now Cupertino), etc.
>>
>>
>>On 6/24/2011 6:07 PM, Will Matney wrote:
>>> I predict, with all of my oracle abilities, snort, that the test won't
> run
>>> no time until there's a law suit. Almost everyone uses battery powered
>>> clocks nowdays, on the wall, and most alarms are digital with xtal
>>> timebases. However, there are still those old foggies who still have
>>> motorized clocks depending on 60Hz to do their duty. If this makes them
>>> obsolete, I wonder if the government is prepared to buy folks
> replacement
>>> clocks, like they provided the digital receivers for our TV's? Like I
> said,
>>> I can see a courtroom battle as I write this.
>>>
>>> Best,
>>>
>>> Will
>>>
>>> *********** REPLY SEPARATOR  ***********
>>>
>>> On 6/24/2011 at 8:50 PM paul swed wrote:
>>>
>>>> "change you can count on"
>>>> Thanks. All those silly alarm clocks by the bed.
>>>>
>>>> On Fri, Jun 24, 2011 at 7:02 PM, Bob Kupiec<bobkupiec at comcast.net>
> wrote:
>>>>
>>>>>
>>>>> AP: Power grid change may disrupt clocks
>>>>> -----------------------------------------
>>>>> http://news.yahoo.com/s/ap/20110624/ap_on_hi_te/us_sci_power_clocks
>>>>>
>>>>>
>>>>> Time Error Correction Elimination
>>>>> ---------------------------------
>>>>> http://www.nerc.com/page.php?cid=6|386
>>>>>
>>>>> NERC Report - June 14
>>>>> ---------------------
>>>>> http://www.nerc.com/files/NERC_TEC_Field_Trial_Webinar_061411.pdf
>>>>>
>>>>>
>>>>>
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