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1 коммутационный импульс тока ОПН
коммутационный импульс тока ОПН
Максимальное (амплитудное) значение тока с условной длительностью фронта не менее 30, но не более 100 мкс и условной длительностью импульса, равной удвоенному времени условного фронта импульса.
[ ГОСТ Р 52725-2007]EN
switching current impulse of an arrester
peak value of discharge current having a virtual front time greater than 30 ms but less than 100 ms and a virtual time to half-value on the tail of roughly twice the virtual front time
[IEC 60099-4, ed. 2.0 (2004-05)]FR
courant de choc de manœuvre d'un parafoudre
valeur de crête du courant de décharge dont la durée conventionnelle du front est comprise entre 30 ms et 100 ms, et dont la durée conventionnelle jusqu'à mi-valeur sur la queue est d'environ deux fois la durée conventionnelle du front
[IEC 60099-4, ed. 2.0 (2004-05)]Тематики
- высоковольтный аппарат, оборудование...
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FR
Русско-французский словарь нормативно-технической терминологии > коммутационный импульс тока ОПН
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2 растворенный кислород
растворенный кислород
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
dissolved oxygen
The amount of oxygen dissolved in a stream, river or lake is an indication of the degree of health of the stream and its ability to support a balanced aquatic ecosystem. The oxygen comes from the atmosphere by solution and from photosynthesis of water plants. The maximum amount of oxygen that can be held in solution in a stream is termed the saturation concentration and, as it is a function of temperature, the greater the temperature, the less the saturation amount. The discharge of an organic waste to a stream imposes an oxygen demand on the stream. If there is an excessive amount of organic matter, the oxidation of waste by microorganisms will consume oxygen more rapidly than it can be replenished. When this happens, the dissolved oxygen is depleted and results in the death of the higher forms of life. (Source: PORT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-французский словарь нормативно-технической терминологии > растворенный кислород
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