Re: Inverters used with gasoline generators?

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Subject Author Date Re: Inverters used with gasoline generators? Alan 01-11-2007  Re: Inverters used with gasoline generators? clare at snyder.on.ca 01-11-2007
Posted by Alan on January 11, 2007, 12:56 pm Please log in for more thread options > This is more "emergency power" than "alternate power", so efficiency isn't > particularly important in this scenario: > > A technical installation that consumes lots o' watts, devices on UPS's to > carry them through short outages... > A longer outage occurs. > A good-quality Honda 5KW gasoline-powered generator is brought in, fired > up, and the UPS's plugged into it... A few hours of operation time bought? > No. The UPS's don't like the generator's flavor of 60 Cycle AC. They > ignore the power available at their inputs and continue to run from their > failing batteries. > > Observing the output of the generator on an oscilloscope shows a smooth > 60-cycle sine-wave. Grounding the chassis of the generator to the house > power ground corrects an apparent wiring error condition, but does not > convince the inverters to stop running from their batteries. Connecting > the output of the generator through an AC powerline conditioner/filter > helps exactly not at all. > > Much annoyance results. > > Question: are there any UPS's available which will accept the output of a > portable generator? > > Thanks much. I'm in the UK, but have run 240v versions of the APC Smart-UPS 1000 and 1400 models fine from a Kipor inverter generator (copy of the honda inverter models). The generator was already driving other loads and once connected the UPS switched over OK and ran for hours. Try appying a load to the gen first and see if the UPS is then happy. Alan. Posted by on January 11, 2007, 1:48 pm Please log in for more thread options On Thu, 11 Jan 2007 17:56:09 GMT, "Alan" > >> This is more "emergency power" than "alternate power", so efficiency isn't >> particularly important in this scenario: >> >> A technical installation that consumes lots o' watts, devices on UPS's to >> carry them through short outages... >> A longer outage occurs. >> A good-quality Honda 5KW gasoline-powered generator is brought in, fired >> up, and the UPS's plugged into it... A few hours of operation time bought? >> No. The UPS's don't like the generator's flavor of 60 Cycle AC. They >> ignore the power available at their inputs and continue to run from their >> failing batteries. >> >> Observing the output of the generator on an oscilloscope shows a smooth >> 60-cycle sine-wave. Grounding the chassis of the generator to the house >> power ground corrects an apparent wiring error condition, but does not >> convince the inverters to stop running from their batteries. Connecting >> the output of the generator through an AC powerline conditioner/filter >> helps exactly not at all. >> >> Much annoyance results. >> >> Question: are there any UPS's available which will accept the output of a >> portable generator? >> >> Thanks much. > >I'm in the UK, but have run 240v versions of the APC Smart-UPS 1000 and 1400 >models fine from a Kipor inverter generator (copy of the honda inverter >models). > >The generator was already driving other loads and once connected the UPS >switched over OK and ran for hours. > >Try appying a load to the gen first and see if the UPS is then happy. > >Alan. > An inverter generator will NOT be a problem. Running from a non-inverter type can cause problems. (frequency and voltage poorly regulated, waveform distorted. -- Posted via a free Usenet account from http://www.teranews.com Similar Threads Posted Re: Convert Your Car To Burn Water + Gasoline = Double Your Mileage! January 21, 2008, 7:19 am Small grid-tie inverters? June 19, 2008, 4:28 pm Inexpensive 24 or 48 volt inverters August 2, 2008, 2:28 am Re: Modified Sine Wave Inverters - What is the down side? April 4, 2007, 9:10 pm taiwan ebay sine inverters -- crap or good? December 27, 2007, 7:59 pm generators August 20, 2007, 6:20 pm generators August 20, 2007, 6:22 pm Parallel generators September 1, 2007, 11:18 am Buying Used Generators January 4, 2008, 7:35 pm Honda generators September 18, 2008, 11:45 pm