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Which UPS to buy?

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NickNielsen Moderator

The problem with generators is not the frequency, but the output voltage. Generators do not react well to changes in load at higher (>75%) load levels., and tend to voltage surges or drops. This is what causes your UPS to boost orattenuate the voltage, not the changes in frequency.

If your generator doesn't maintain 60 Hz, it's time to look at the maintenance contract and find somebody who can set it up and maintain it properly.