The problem with generators is that the frequency is dependent on how fast the rotor spins and the second you put an electrical load on A generator you increase the magnetic field resistance to the armature and the generator slows down.
When the generator is the size of a barn at Bonneville Dam and the armature weighs 10 tons and you turn on your coffee pot the massive inertia in the generator armature will not slow measurably When it's your Champion generator the armature slows measurably and the frequency then gets lower until the engine's governor gives it more fuel to compensate then the frequency returns to normal. Ted -----Original Message----- From: PLUG <plug-boun...@lists.pdxlinux.org> On Behalf Of Dick Steffens Sent: Saturday, December 30, 2023 11:39 AM To: plug@lists.pdxlinux.org Subject: Re: [PLUG] UPS shopping On 12/30/23 09:30, Chuck Hast wrote: > Google 24v inverter there are boat loads of them for 24v PV systems. > Ranging from 300W on up. > https://www.amazon.com/24-volt-pure-sine-wave-inverter/s?k=24+volt+pur > e+sine+wave+inverter If you are planning on running computers and > whatnot get a sine wave inverter, many switched PSU's do not like > modified sine wave (weasel words actually modified SQUARE WAVE) they > will put up with it but shortens life. The prices have dropped > considerably on them, same for the pure sine wave UPS. How well do those units deal with poor quality power from an emergency generator? I have a Champi8on 100296 dual fuel generator. When I'm running it, my UPS boxes won't run. They reject the power from the generator. I'm guessing it's because it's not 60 HZ, but something close enough that it's good for all the rest of the appliances, but not the UPS boxes. -- Regards, Dick Steffens
