Displaying 3 results from an estimated 3 matches for "35kw".
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35k
2005 Sep 12
1
What are some effective power status solutions?
...a solution to monitor the power OUTSIDE my datacenter.
(The on/blackout status of main building power).
My small datacenter is covered by a UPS, an older Liebert 18Kva unit with
no environmental or status monitoring outside of the LCD console and
audible alarm. The Liebert UPS is backed by a 35KW diesel generator which
usually kicks on within 10 seconds of a power outage. The generator has
a ~36hour runtime. (Air conditioning of the datacenter is also generator
backed).
This solution is great for the needs of the datacenter for most
conditions, but I still would like to know when p...
2017 May 24
2
System Time Source
On Wed, May 24, 2017 10:45 am, Warren Young wrote:
> On May 24, 2017, at 8:52 AM, Chris Adams <linux at cmadams.net> wrote:
>>
>> Once upon a time, Warren Young <warren at etr-usa.com> said:
>>> a. It???s transmitting from a fixed location in a time zone you
>>> probably aren???t in ??? US Mountain ??? being the least populous of
>>> the lower
2017 May 25
0
System Time Source
...milliwatt is quite a bit to
work with, excepting the noise effects of 1/f ("pink") noise and local
interference. Higher-gain receive antennas are easy at 60kHz (iron-core
loopstick or a multi-turn loop). According to NIST's site, however,
WWVB is currently running at half-power (35KW ERP; 75.45dBm) so cut the
available power in half at the moment.
However, WWVB's signal _is_ 60kHz, and so any building of metal
construction, even sparse-spaced rebar in concrete, will effectively be
a very high attenuation 'waveguide-beyond-cutoff' attenuator, and so a
very effec...