27KW Genset has slight flicker with incandescent lamps

Generac, Guardian, Honeywell, Siemens, Centurion, Watchdog, Bryant, Olympian & Carrier Liquid Cooled Home Standby & Commercial generator troubleshooting and repair questions
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Genitup
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Wed Nov 06, 2019 12:40 pm

I wonder why that is?
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murphy
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Wed Nov 06, 2019 12:55 pm

Genitup wrote: ↑
Wed Nov 06, 2019 12:40 pm
 I wonder why that is?
Because a 3600 RPM alternator only has two poles. Your power company's alternator has something in the 32 to 36 pole range. A two pole alternator can't create a sine wave. It looks like a triangle wave with the top flattened.

Here is what my old 7 kW generator looked like.
P9290324.JPG
P9290324.JPG (82.16 KiB) Viewed 12 times
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Genitup
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Wed Nov 06, 2019 1:08 pm

same 2 poles for 1800rpm Generac?
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Chris
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Wed Nov 06, 2019 2:51 pm

1800 RPM has 4 poles respectively. Generators just have a 'noisy' sinewave in general. Things like brushed vs brushless can add to it, connected loads, engine stability, etc.
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