Also named brownout, means a short-term decrease in incoming voltage. Sag is one of the most common power problems, it may lead to your computer lacking of enough power to function, and result in keyboards frozen, system crashes, and data loss.
Any decrease of below 80% in the normal voltage carried by a power line. A sag is sometimes referred to as a brownout. See surge, spike, and oscillation.
a reduction in rms voltage or current at the power frequency for duration of 0.5 cycles to 1 minute. Also called voltage dip. Events below the equipment ride-through capability cause load dropout. Voltage sags are originated in lightning strikes, short-circuits, and sudden overloads.
A period of lower-than-normal voltage lasting up to one minute, with magnitude of 0.1 to 0.9 per unit.
Short term under-voltage occurring when peak demand exceeds generating capacity sometimes caused by lightning when primary gas suppressors fire.
Any short-term (less than 1 minute) decrease in voltage.
A momentary drop in voltage from the power source.
A reduction in a voltage envelope. The duration is usually from one cycle to a few seconds. Usually, sags are caused by fault clearing or heavy load startup.
A period of lower than normal voltage, causing motor heating and disk drive problems.
A decrease in the thickness of a section.
A momentary decrease from nominal voltage lasting one or more line cycles. Severe conditions may dictate a need for a UPS or voltage regulator. Also known as a temporary under-voltage (TUV).
A sag is a decrease in voltage or current.
A decrease in RMS voltage lasting from half a cycle to a minute.
A decrease in the peak voltage waveform, at the same nominal frequency, lasting longer than one-half of a cycle. For a 60 Hz system the duration is longer than 8.33 milliseconds.
A decrease in metal section in casting due to sagging of the cope or core. See Core, Cope.