claquage
| 14:59 Sep 8, 2010 |
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| French to English translations [PRO] Tech/Engineering - Energy / Power Generation | |||||||
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| Summary of answers provided | ||||
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| 4 +1 | breakdown |
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| 4 | burn-out |
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| Discussion entries: 1 | |
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Answers
33 mins confidence: 
burn-out Explanation: There is a specifically electrical entry for claquage in Le Grand Robert: "Destruction d'un matériau sous l'effet d'un champ électrique ou de la chaleur. / Claquage d'un condensateur. /Claquage thermique." "Such cables can carry 150 times the electrical current of copper wires of the same ... A single lightning strike or errant squirrel can burn out a substation, leaving tens ... The byproduct is heat and water which can both be re-used! ..." www.technologyreview.com/energy/18790/ -------------------------------------------------- Note added at 38 mins (2010-09-08 15:38:08 GMT) -------------------------------------------------- "The rails on the ground are about 600V and the overhead lines are about 25,000Vbecause of this effect. If you had a 25,000V on a rail you would get sparks going to the ground. You’d also kill a lot of people! It’s not actually lethal unless you touch it. I think they probably do lose a lot of power through them but less than you’d expect where if you do get a short it’s going to burn out." http://www.thenakedscientists.com/HTML/content/latest-questi... And to more of the previous citation: "To develop the concept, the U.S. Department of Homeland Security and New York's major utility, Consolidated Edison (Con Ed), announced last week that they would invest $39 million over the next three years to connect two substations at undisclosed locations in Manhattan, allowing each to take over for the other in the event that one burns out. ... ... "The grid's endpoints are substations that typically serve tens of thousands of customers apiece. A single lightning strike or errant squirrel can burn out a substation, leaving tens of thousands of people in darkness until the utility can get the substation back online." |
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14 mins confidence: peer agreement (net): +1
peer agreement (net): +1breakdown Explanation: claquage rupture diélectrique d'une isolation sous l'effet d'un champ électrique élevé ou de la détérioration physico-chimique du matériau isolant --> breakdown claquage (électrique) processus, dû à un champ électrique, qui transforme brusquement tout ou partie d'un mileiu isolant en in milieu conducteur --> (electric) breakdown [IEC dictionary] -------------------------------------------------- Note added at 19 mins (2010-09-08 15:18:15 GMT) -------------------------------------------------- WATER TREEING is one of the major degradation mechanisms in cable insulation. It has been believed that the final BREAKDOWN takes place when a water tree ... www.vjol.info.vn/index.php/ans/article/view/1062/992 ELECTRIC TREE and trace of b.d.. **Insulation breakdown. Fig. 10. BREAKDOWN path of deteriorated XLPE cable model by accelerated immersed water con- ... www3.interscience.wiley.com/journal/114198741/articletext?DOI=10... Unfortunately, we do not live in a perfect world and cable insulation is often ... The cable is checked for voids, protrusions, contaminants, WATER TREES or other damage. ... On new 15kV cable, AC BREAKDOWN may occur at over 150 kV. ... www.powertechlabs.com/cfm/index.cfm?It=901&Id=82 These results can serve to understand the PRE-BREAKDOWN BEHAVIOR OF A CABLE INSULATION containing needle–plane type defects in the presence of WATER TREES. ... linkinghub.elsevier.com/retrieve/pii/S0304388603001347 In your case it sounds as if they are talking specifically about breakdown caused by water treeing. http://books.google.com/books?id=8Tm7dH99-XEC&pg=PA75&lpg=PA... -------------------------------------------------- Note added at 1 hr (2010-09-08 16:00:50 GMT) -------------------------------------------------- breakdown (Elec. Eng.) The sudden passage of current through an insulating material at breakdown voltage. [Chambers Sc.i & Tech.] breakdown (ELEC) A large, usually abrupt rise in electric current in the presence of a small increase in voltage; can occur in a confined gas between two electrodes, a gas tube, the atmosphere (as in lightning), an electrical insulator, and a reverse-biased semiconductor diode. [McGHill Sc.i & Tech.] |
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