Re: power outage ? from a novice..

On Dec 21, 10:29 am, Steve Stone <spfl...@xxxxxxxxxxx> wrote:
My personal use of a UPS is to protect from conditions in my area
due to utility provided power making quick, wild swings between "normal"
voltage and no voltage,
usually the result of a reconfig of the grid to compensate for summer
loads,

Such voltage changes cannot cause appliance damage. But excessively
low voltage might cause damage to small electric motors. Meanwhile a
typical UPS output is actually a threat to small electric motors
because its output power (see those battery backup mode numbers) is so
'dirity'.

Well, you did post some numbers. From those numbers, we now know
you assumed 87 volts is destructive to electronics - which is false
for so many cited reasons. (And you know otherwise without posting a
single source or number?) Your numbers say a UPS will protect from
power off. As the sales brochure says, it protects - from being
turned off.

Also apparent: you only speculate (without any facts) that hardware
was saved by a UPS. 1) Your own numbers demonstrate that you assumed
non-destructive events are destructive. 2) How many smoke detectors,
furnances, dish washers, dimmer switches, and clock radios have you
replaced last summer due to voltage variations? Based upon your
post, it should be at least one a week. 3) Based upon your
assumptions, then you reset every digit clock multiple times every
day. 4) Or maybe those extreme voltage variations due to switching do
not exist - as required by industry standards even 50 years ago?
Well, four reasons demonstrate that you have only speculated.

UPS has one function - to keep an appliance powered on during
extreme voltage losses - such as when incandescent bulbs dim to less
than 40% intensity. (Oh, another number.)

What would happen if a destructive voltage did occur? Electronics
power supply AND UPS power supply are both destroyed. What kind of
UPS protection is that? Anything that would protect that UPS's supply
is also inside electronic power supplies. So what is that UPS
protecting? Before it can protect anything, first it needs something
to protect itself.

Extreme voltage sags that permit a TV to not power off - that is
called protection? Yes. Blackout protection, as misrepresented in a
sales brochure, is not hardware protection. It protects the TV from
being turned off. Sales brochure did not lie. It just forgot to
define 'protection' so that you (and RickMerrill) would assume and
then promote myths. Ironic. Even your own spec numbers do not claim
to provide hardware protection - only provide turn off protection.

How did you convert turn off protection into hardware protection -
and do it without any technical numbers? Classic junk science.
.

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