[nsp] Question on UPS Power requirements

[Robert E. Seastrom]

Something that no shop should be without is a decent clamp-on ammeter.

I have a Fluke 337, but you should look at the entire line to see
what's right for you.  Available from places like Graybar and Grainger...

line card:
http://www.fluke.com/Download/ElectricalPower/1629613_.pdf

Bear in mind in using it that you can't just clamp it around a power
supply cable and expect it to do the right thing -- you should clamp
it around the hot conductor only (this will typically require making a
special extension cable).

Once you know how many amps you're drawing (and have double-checked to
make sure that the switching power supply in the 6509 is
powerfactor-corrected), you can get a general idea of how long a
typical UPS will last.  The 16 amp rating is a maximum, as you already
know...

                                        ---Rob


"Kerpal.Abdar"<kerpal.abdar@earthlink.net> writes:

> Hi all.  Sorry for the post but perhaps someone
> can help me out.  We have a
> 6509 with what I believe is a 1800 watt p/s, 16
> amp but we only have half of
> the slots filled.  My question is.......When
> figuring the calculation to size
> an APC UPS,  can I assume my power requirement
> for the 6509 is about half the
> stated rating (since I am only using about half
> the slots)?  
> Is the 1800 watt, 16 amp the maximum at full
> load?
> 
> 
> Kerpal
> 
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