[RE-wrenches] Quantifying power quality

[Marco Mangelsdorf]

Can you get the specs on the UPS, as far as tolerances and ranges?  Maybe
check with the manufacturer of the UPS as far as being able to reprogram the
bugger to be, shall we say, less sensitive.  I know that there's a lot that
can be done as far as being able to reprogram inverter parameters.  (Boy, do
we know all about that here in Hawaii.)

 

marco

 

From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of William Miller
Sent: Saturday, October 11, 2014 7:21 PM
To: RE-wrenches
Subject: [RE-wrenches] Quantifying power quality

 

Friends:

 

I am still having a pi$$ing match with the company that installed the
expensive home entertainment system for a client over the issue of power
quality.  The UPS beeps frequently and the AV system crashes now and then.
The lead installer has copped an attitude and is blaming the Sunny Island /
Sunny Boy / Generac system for the AV system problems.  The UPS emails
reports in flurries that indicate a "power failure" has occurred.  

 

I have a Dataq data acquisition system sampling at a rate that allows me to
see the individual cycles on the system output on one of three phases.
During the time that a power failure is reported to have occurred each and
every cycle looks great.  I know this is not a definitive test of power
quality so I upped my game.  I bought a Fluke VR1710 power monitor and I am
recording power quality from the same receptacle that feeds the UPS.

 

I have some log files from the Fluke Power Log software but the instructions
are not that great and I don't know how to interpret the data.  Do any of
you have any experience with this software and could possibly advise me?

 

In a more general sense, how good is power to be called "good"?  I have done
some research and the industry material is a bit overwhelming.  Does anyone
have a short answer?

 

And lastly, even though the UPS is beeping, if it is doing what it is
designed to do, the power quality should not be an issue because the UPS
corrects for any problems.  (Actually the UPS was beeping-the best move in
this situation was to mute the annunciator so at least the homeowner is not
hearing the beeper.)

 

I know others of you are dealing with the same problems because it came up
on this forum.  I am interested in an approach that verifies the Sunny
Islands are producing adequately good power, or not, so I can either address
the problem or get the AV guy off my rear end.

 

Thanks in advance.

 

William

 

 

Gradient Cap_mini
Lic 773985
millersolar.com <http://www.millersolar.com/> 
805-438-5600

 

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