overcurrentn.

Brit.

/ˈəʊvəkʌrənt/,

/ˈəʊvəkʌrn̩t/, U.S.

/ˈoʊvərˌkərənt/

Origin: Formed within English, by derivation. Etymons: over- prefix, current n.

Etymology: < over- prefix + current n.

1. Meteorology. A current of air flowing high in the atmosphere. Now rare or disused.

ΚΠ

1905 D. T. Smith in Science 5 May 706/2 They veer around till, caught in the eastward overcurrent, they are carried eastward across the Pacific.

1906 Science 24 Aug. 248/1 When a cyclone has once been inaugurated..it presents itself as a mountain of air with a tendency to rise to a great height into the prevailing over-current.

2. An electric current in excess of that which is normal, safe, or allowed for. Usually attributive, as overcurrent device, overcurrent protection, overcurrent trip, etc.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > electric current > [noun] > excessive

overload1904

overcurrent1931

1931 H. W. Brown Electr. Equipm. (ed. 2) i. 19 (heading) Automatic protection against ground, short circuit, and overcurrent.

1952 H. Mauldin & W. A. Cochran Electr. for Farm iv. 73 If one unit of a number of brooders, all protected by one overcurrent device, should develop an overload or a short circuit, the resulting outage would take the heat away from the entire group of brooders.

1971 A. H. Moore & S. M. Elonka Electr. Syst. & Equipm. for Industry ii. 31 Direct-acting over~current trips are generally used on low-voltage circuit breakers.

1992 RS Components: Electronic & Electr. Products July 444/1 Featuring overcurrent, overtemperature and reverse polarity protection the fans may be reverse mounted.

This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022).

单词	overcurrent
释义	overcurrentn. Brit. /ˈəʊvəkʌrənt/, /ˈəʊvəkʌrn̩t/, U.S. /ˈoʊvərˌkərənt/ Origin: Formed within English, by derivation. Etymons: over- prefix, current n. Etymology: < over- prefix + current n. 1. Meteorology. A current of air flowing high in the atmosphere. Now rare or disused. ΚΠ 1905 D. T. Smith in Science 5 May 706/2 They veer around till, caught in the eastward overcurrent, they are carried eastward across the Pacific. 1906 Science 24 Aug. 248/1 When a cyclone has once been inaugurated..it presents itself as a mountain of air with a tendency to rise to a great height into the prevailing over-current. 2. An electric current in excess of that which is normal, safe, or allowed for. Usually attributive, as overcurrent device, overcurrent protection, overcurrent trip, etc. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electric current > [noun] > excessive overload1904 overcurrent1931 1931 H. W. Brown Electr. Equipm. (ed. 2) i. 19 (heading) Automatic protection against ground, short circuit, and overcurrent. 1952 H. Mauldin & W. A. Cochran Electr. for Farm iv. 73 If one unit of a number of brooders, all protected by one overcurrent device, should develop an overload or a short circuit, the resulting outage would take the heat away from the entire group of brooders. 1971 A. H. Moore & S. M. Elonka Electr. Syst. & Equipm. for Industry ii. 31 Direct-acting over~current trips are generally used on low-voltage circuit breakers. 1992 RS Components: Electronic & Electr. Products July 444/1 Featuring overcurrent, overtemperature and reverse polarity protection the fans may be reverse mounted. This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022). < n.1905
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