I realize this is off topic, but I can't find an answer elsewhere and TowerTalk has the best technical resources I can think of. (OK, I guess I can tie it to towers, because the generator will run th
Author: "Richard M. Gillingham" <rmoodyg@bellsouth.net>
Date: Thu, 24 Aug 2006 22:15:04 -0400
I have several of the APC units too. The only time they've cycled/failed for me is when the batteries were about done in and wouldn't hold a charge.. After replacing the batteries, they behaved. I ge
Author: "K8RI on TowerTalk" <K8RI-on-TowerTalk@tm.net>
Date: Fri, 25 Aug 2006 00:52:45 -0400
I have 9500 Watt gas powered generator and use a manual transfer switch. By the time I can make the switch the generator has stabillized. Do you have real line conditioners or the plug strips they c
Author: "William P. J. Bressette" <wpj@8inchfloppy.net>
Date: Fri, 25 Aug 2006 08:13:15 -0400
I work in TI and have ran into this situation many times while trying temp setups the generator is producing a digital signwave or square sinewave and the APC products need to have a very smooth squa
I have APC UPS units of various sizes (biggest is a Back-UPS Pro 1100) for our computers and DirecTiVos). I've never seen any cycle as you describe, but I've never tried feeding them from a generator
Thanks to all for the replies. I did leave out another link to TowerTalk: the generator powers the tower lights when the grid is down... To answer a few questions and make a few clarifications: The l
Author: "WA3GIN @ Arlington County, VA" <wa3gin@erols.com>
Date: Fri, 25 Aug 2006 11:03:37 -0400
Perhaps when not receiving a true sine wave from the generator you should reduce the load on the UPS to 50% APC has the best answer for you on their web page... 73, dave wa3gin ______________________
We used to encounter this all the time running computers on location sets off a small generator. (Honda 6kW unit) We'd have UPSes, and they would spontaneously switch on and off.. (several brands, bu
A standard (non-inverter style) puts out a very nice sinewave, albeit of varying frequency as the engine speed changes. I have seen generators that put out bad waveforms in weird load situations (eno
Hi Doug, I am having the same problem. Installed a Guardian 16KW generator. When it kicks in the UPS' go crazy. I am using two APC's - Back-UPS ES 725 and 500. They are less than a year old. They wor
Author: "WA3GIN @ Arlington County, VA" <wa3gin@erols.com>
Date: Fri, 25 Aug 2006 14:42:48 -0400
A common characteristic of generators is the normal output voltage distortion when supplying power to nonlinear loads such as computers. This output voltage distortion can be interpreted by the UPS a
Any thoughts about using something like a Tripp Lite IS1000 isolation transformer to help this? Was thinking of getting one and plug in my rig, and UPS. N2TK, Tony --Original Message-- From: towertal
Nope.. a transformer doesn't help the waveform. A big ol' honkin' 60 Hz bandpass or low pass filter maybe? Or, loads that have better current waveforms (i.e. they look more like a resistor, rather th
Tnx Jim for the info. The cheap thing would not be to go to a larger generator. This is a 16KW unit. N2TK, Tony Nope.. a transformer doesn't help the waveform. A big ol' honkin' 60 Hz bandpass or low
A Ferroresonant type of line isolator will in-fact take a rather poor sine wave and make it proper. Topaz, Sola, Delta Emerson used to make them. They are not very efficient and don't like loads as t
I wonder if you want to start "re-engineering" a solution then maybe you might as well bypass cleaning up the AC sinewave off the generator and just convert the output straight to high current, low v
Sounds like someone should start up a generator and UPS reflector. It looks like there's enough interest. Back to towers and HF antenna construction projects. Cheers, Steve K7LXC TT ADMIN ___________
Ah.. yes.. that would be pretty pricey to go to the next step up... If you don't have one, I'd beg or borrow an oscilloscope and look at the voltage waveforms. You can capacitively couple the scope w
I suspect the problem is not the UPS, but the non-UPS loads that happen to be on the genset.. Flourescent lights, big switching power supplies, induction furnaces, arc welders, diathermy machines, te
A few questions to clarify the situation: 1. Is this the first time use of the UPS"s and this generator? 2. What size and type generator.(home use or commercial duty)? 3. Professionally installed tra