question regarding a UPS

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b11_ said:
When one turns-off a UPS, is the power actually turned off to the
computer?
Click to expand...


If you turn off a device and it doesn't turn off, the device is broken.
If you turn off a UPS and it still supplies power then it didn't turn
off. The grounding should still be connected but not the power.

So was there a reason for asking the question?
 
b11 said:
When one turns-off a UPS, is the power actually turned off to the computer?
Click to expand...

Plug a lamp, small one, into the UPS, have the computer already
shutdown, turn the light on, then turn off the UPS.

All of the UPS's I use have no output when they are turned off, but, as
with any electrical appliance, you need to be sure that you are safe
around the UPS even when it's turned off. At no point should you
consider it safe to work on the electrical parts connected to the output
of a power device while it's still plugged in (the device connected to
the UPS).
 
Vanguard said:
If you turn off a device and it doesn't turn off, the device is
broken. If you turn off a UPS and it still supplies power then it
didn't turn off. The grounding should still be connected but not the
power.

So was there a reason for asking the question?
Click to expand...


Addendum:

Some UPS'es have both protected outlets and non-protected outlets. That
is, some outlets are protected by the UPS (to provide power during an
outage) and some are simply surge-protected or straight-through outlets.
Whether the non-protected outlets provide power in the "off" position
for the UPS depends on whether they are "switched" outlets or not. If
non-protected outlets are switched, they are disconnected when the UPS
is turned off. If they are unswitched outlets, they simply feed through
to the input power and are still alive when the UPS is turned off.
Personally I have never used a UPS that had unswitched non-protected
outlets.

Since you never bothered to identify *which* UPS that you happen to have
(by brand and model), no one can give you details for such an undetailed
post (i.e., replies will be just as vague or unfocused as is the query
post).
 
Vanguard has good point. All the outlets on the UPS may not be switchable
via an on/off switch.
Leythos presented straightforward method of determining presence of running
AC voltage with a small AC light source checking all outlets on the UPS. A
desk lamp or your computer monitor's amber light may work for observation.
All may be switchable, some may be not switchable, power on all the time
while engaging the UPS on/off switch. Unswitchable outlets are ususally
noted in print on the UPS near that particular outlet(s).
Your same question noted in win98.gen_discussion group as well.
 
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