| 单词 | horn arrester |
| 释义 | > as lemmashorn arrester b. Each of a pair of rod conductors that diverge in a vertical plane from a narrow gap at the base, designed to extinguish any arc that forms in the gap and used to protect power lines from voltage surges; so horn arrester, horn gap; (also) a projecting rod conductor that protects an insulator by attracting away from it any arc that forms. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical power, electricity > distribution system > [noun] > protection against surge horn1911 1911 Trans. Amer. Inst. Electr. Engineers 29 i. 582 The relief gaps were removed before the lightning season of 1908. The grounded horn was left in place to act as a lightning rod. 1911 Trans. Amer. Inst. Electr. Engineers 29 i. 600 We placed the horn gaps on the towers, about 500 feet apart. 1930 Engineering 7 Mar. 314/2 Insulators on high-voltage lines are protected by arcing horns. 1968 P. J. Freeman Electr. Power ix. 253 The shape of the horn gap forces the arc upwards by magnetic and thermal effects and the arc is self-extinguishing. 1969 L. Csuros in Power Syst. Protection (Electr. Council) III. xii. 20 The arcing horns shown on the 132 kV bushings serve the main purpose of protecting the metal fittings on..the bushing by providing a suitable anchorage for the fault arc. < as lemmas |
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