What's Voltages Requirements of an AC-powered server and power equipment

For an AC-powered server, the voltage fluctuates from -10% of the rated voltage to 5% of the rated voltage.

For AC-powered power equipment and important buildings, the voltage fluctuates from -15% of the rated voltage to 10% of the rated voltage.

The AC frequency fluctuates from -4% to 4%. The sinusoidal distortion rate of the voltage waveform is smaller than or equal to 5%.

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