Common Power Problems
The primary role of any UPS is to provide short-term power when the input power source fails. However, most UPS units are also capable in varying degrees of correcting common utility power problems:
- Voltage spike or sustained Overvoltage
- Momentary or sustained reduction in input voltage.
- Noise, defined as a high frequency transient or oscillation, usually injected into the line by nearby equipment.
- Instability of the mains frequency.
- Harmonic distortion: defined as a departure from the ideal sinusoidal waveform expected on the line.
UPS units are divided into categories based on which of the above problems they address, and some manufacturers categorize their products in accordance with the number of power-related problems they address.
Read more about this topic: Uninterruptible Power Supply
Famous quotes containing the words common, power and/or problems:
“There is something antique, even, in his style of treating his subject, reminding us that Heroes and Demi-gods, Fates and Furies, still exist; the common man is nothing to him, but after death the hero is apotheosized and has a place in heaven, as in the religion of the Greeks.”
—Henry David Thoreau (18171862)
“Let us rise in the moral power of womanhood; and give utterance to the voice of outraged mercy, and insulted justice, and eternal truth, and mighty love and holy freedom.”
—Maria Weston Chapman (18061885)
“More than a decade after our fellow citizens began bedding down on the sidewalks, their problems continue to seem so intractable that we have begun to do psychologically what government has been incapable of doing programmatically. We bring the numbers downnot by solving the problem, but by deciding its their own damn fault.”
—Anna Quindlen (b. 1952)