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:
“Nothing shall warp me from the belief that every man is a lover of truth. There is no pure lie, no pure malignity in nature. The entertainment of the proposition of depravity is the last profligacy and profanation. There is no scepticism, no atheism but that. Could it be received into common belief, suicide would unpeople the planet.”
—Ralph Waldo Emerson (1803–1882)
“You are evil. But even the power of evil cannot stand against the power of faith and goodness.”
—Griffin Jay, and Randall Faye. Lew Landers. Lady Jane Ainsley (Frieda Inescort)
“To be a philosopher is not merely to have subtle thoughts, nor even to found a school, but so to love wisdom as to live according to its dictates a life of simplicity, independence, magnanimity, and trust. It is to solve some of the problems of life, not only theoretically, but practically.”
—Henry David Thoreau (1817–1862)