SURGE CURRENT Meaning and
Definition
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Surge current refers to a sudden and brief increase in the flow of electric current in a circuit or device. It typically occurs when there is a sudden change in voltage, such as during the startup or operation of an electrical or electronic device.
When a device is turned on or energized, it often requires a higher amount of current to overcome the initial resistance and provide the necessary power for its proper functioning. This abrupt surge in current is a temporary phenomenon that lasts for a brief period, usually lasting a few milliseconds to seconds. Surge currents are commonly observed in various electrical and electronic equipment such as motors, transformers, power supplies, and even in home appliances like refrigerators or air conditioners.
Surge currents can be several times higher than the normal operating current of the device. This excessive current flow can put a strain on the components and may lead to undesirable consequences such as overheating, tripping of circuit breakers, or even damage to sensitive electronic components. To prevent such issues, surge protection devices like surge protectors or surge suppressors are often employed. These devices are designed to divert or absorb the excess current and protect the underlying equipment from potential damage.
In summary, surge current refers to the momentary increase in electric current during the startup or operation of an electrical or electronic device. It is a phenomenon that needs to be managed and protected against to ensure the safe and reliable functioning of various electrical systems.
Etymology of SURGE CURRENT
The word "surge" is derived from the Latin word "surgere", meaning "to rise" or "to spring up". In the context of "surge current", it refers to a sudden increase or rise in the flow of electric current. This term is typically used to describe a temporary and often brief pulse of higher current beyond the normal operating level.
