Many of the mysteries of equipment failure, downtime, software, and data corruption are the result of a problematic power supply. Compounding the problem is that there is no standardized way to describe power problems. Learn more about common power disturbances, what can cause them, and how to safeguard your critical equipment—all described in Institute of Electrical and Electronics Engineers (IEEE) standard terms.
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dimmers and arc welders under normal operation. This problem could be described as a transient impulse problem, but because the notches are periodic over each ½ cycle, notching is considered a waveform distortion problem. The usual consequences of notching are system halts, data loss, and data transmission problems. One solution to notching is to move the load away from the equipment causing the problem (if possible). UPSs and filter equipment are also viable solutions to notching if equipment cannot be