Numquam commutabilis sunt disjunctores circuituum AC et DC?

Campus: Analyse Transformatorem

China

Primum, clarificandum est: circuit breakers AC non debent uti pro circuit breakers DC in circuitis DC!

DC circuit breakers

Propter differentias in generatione et extinctione arcuum inter AC et DC, circuit breakers AC et DC eodem valor nominale non habent idem potentiam quando interruptum faciunt potentiam DC. Uti circuit breakers AC pro circuit breakers DC, vel miscere circuit breakers AC et DC, est una ex principibus causis malae coordinationis protectionis et tripping non intendit upstream.

Circuit breakers utuntur mechanismo thermal-magnetic (electromagnetic) ad operationem instantaneam. Parametri clavi affectantes tripping sunt amplitudo maxima currentis per circuit breaker fluens. Valor nominale circuit breaker referatur ad valorem RMS (root mean square), dum amplitude maxima currentis AC maior est quam eius valor RMS (circa 1.4 times). Sub eadem dispositione, si circuit breaker AC utitur in circuitu DC, actualis amplitudo tripping eius erit maior quam circuit breaker DC. Quando occurrit overload, localis circuit breaker posset non tripere, faciens circuit breaker upstream tripere—hoc dicitur "over-level tripping." Praeterea, quia circuit breakers AC et DC utuntur diversis principiis arc-quenching, DC arcs inherent difficultiores sunt extingui quam AC arcs. Circuit breakers DC ideo designantur cum maiori requisito performance arc-quenching. Uti circuit breaker AC in circuitu DC non potest efficaciter vel secure extinguere arcum DC, quod tempore inevitabiliter ducet ad welding contactorum principalium.

Ex praecedentibus, manifestum est quod circuit breakers AC et DC non debent mutuo uti. Simpliciter, si circuit breakers AC et DC vere universales essent, cur distinctor esset inter eos?

Donum da et auctorem hortare

Thematibus:

Applicationes et Tenditiae

Circuitus Interruptor DC

De expertis

Echo

China

Area Expertiae

Transformer Analysis

Articulus professionalis

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