Curcuit Breaker Abstract
A circuit breaker was examined to determine how it works.Basically, it is designed to disconnect the current if the current passingthrough the breaker is higher than the allowable current. Its main partsconsist of a switch, connecting pads, and the disconnect device. Sincethe breaker consists of many individual parts, the only improvement foundwas to combine some of the parts into a single part.Our group dissected a thirty-amp household Circuit-breaker. Its purpose isto protect electrical appliances from being damaged though excessivecurrents. A circuit breaker limits the amount of current that may safelyenter a household electrical system via a predetermined amperage rating.It is placed in series between your house and the provided electricity.Any current in excess of the rated current amount will trip the circuitbreaker in to a non-conducting or open path condition. The closed path ismaintained until either magnetism or thermal expansion causes the circuitThe circuit breaker has several features that are worth noting in thedesign discussion. First is its ability to detect various types of loading
This reaction may take a longer amount oftime to open the circuit, but is designed to provide the user with a shorttime of extended current draw through the circuit before the breakeropens. Thecircuit breaker's best point is that the device is effective and compact. Operation of the circuit breaker is simple, but utilizes complexmechanisms. And, because there are may small parts that fit integrally witheach other, manufacturing costs may be inflated. Once the breaker has been trippedinternally, it must be reset externally by switching it off, and then backon. Limited service life is afunction of build quality. The switch, which is activated internally by the trigger or externallyby the user, simply opens or closes a set of contacts which complete thecircuit. Similarly for the tripping mechanism underconstant thermal expansion the expansion of the top of the bimetallicstrip causes the trigger to be pulled down which has the same effect. The mechanism for tripping the circuit during a high peak valueis magnetism. The features enable the breaker to do several jobs at once, eliminatingthe need for multiple elements in the circuit. Because of the complexity of the innerworkings, manufacturability is more difficult, thus raising costs. For example, it providesthe user with an easily assessable on/off switch, fault protection againstcurrent spike, and fault protection against heavy current draw. Thecircuit is tripped or opened when either a high peak current exceeds therated value of the circuit as when under constant thermal expansion thecircuit experiences small spikes in the current that exceeds the amperagerating. A small inspection was done to determine if any parts could be eliminatedor combined to reduce the build cost, but no immediate solutions wereidentified.
Common topics in this essay:
Device Description,
Georgia Power,
,
circuit breaker,
current draw,
fault protection,
trigger mechanism,
thermal expansion,
limited service life,
constant thermal expansion,
fuse box,
releasing switch,
constant thermal,
electrical system,
service life,
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