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1 интеграл Джоуля I2t
интеграл Джоуля
Условная величина, характеризующая тепловое действие тока короткого замыкания на рассматриваемый элемент электроустановки, численно равная интегралу от квадрата тока короткого замыкания по времени, в пределах от начального момента короткого замыкания до момента его отключения
[ ГОСТ 26522-85]
интеграл Джоуля (I2t)
Интеграл квадрата тока за определенный период времени.
Примечания
1. Преддуговой I2t — это интеграл I2t за преддуговое время плавкого предохранителя.
2. I2t отключения — это интеграл I2t за время отключения плавкого предохранителя.
3. Энергия в джоулях, выделяемая в резисторе 1 Ом в цепи, защищаемой плавким предохранителем, равна I2t отключения, выраженному в амперах в квадрате в секунду (А2·с).
[ ГОСТ Р 50339. 0-2003 ( МЭК 60269-1-98)]
интеграл Джоуля I2t
Интеграл квадрата силы тока по данному интервалу времени.
МЭК 60050(441-18-23)
[ ГОСТ Р 50030. 1-2000 ( МЭК 60947-1-99)]
[ ГОСТ Р 50345-99( МЭК 60898-95)]EN
I2t
Joule integral
the integral of the square of the current over a given time interval:
NOTE 1 – The pre-arcing I2t is the I2t integral extended over the pre-arcing time of the fuse.
NOTE 2 – The operating I2t is the I2t integral extended over the operating time of the fuse.
NOTE 3 – The energy in joules liberated in one ohm of resistance in a circuit protected by a fuse is equal to the value of the operating I2t expressed in A2 • s.
[IEV number 441-18-23]FR
I2t
intégrale de Joule
intégrale du carré du courant pour un intervalle de temps donné:
NOTE 1 – L'I2t de préarc est l'intégrale I2t pour la durée de préarc du fusible.
NOTE 2 – L'I2t de fonctionnement est l'intégrale I2t pour la durée de fonctionnement du fusible.
NOTE 3 – L'énergie en joules libérée dans une portion ayant une résistance de un ohm d'un circuit protégé par un fusible est égale à la valeur de I2t de fonctionnement exprimée en A2 • s.
[IEV number 441-18-23]Тематики
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Русско-немецкий словарь нормативно-технической терминологии > интеграл Джоуля I2t
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