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1 безопасное сверхнизкое напряжение
безопасное сверхнизкое напряжение
Напряжение, не превышающее 42 В между проводниками и между проводниками и землей; при этом напряжение холостого хода не превышает 50 В. Если безопасное сверхнизкое напряжение получают от сети питания, оно должно поступать через безопасный разделительный трансформатор или преобразователь с раздельными обмотками, изоляция которых соответствует требованиям к двойной или усиленной изоляции.
Примечания.
- Установленные предельные значения напряжений основаны на предположении, что безопасный разделительный трансформатор работает при своем номинальном напряжении.
- Безопасный разделительный трансформатор 1) известен также как SELV.
[ ГОСТ Р 52161. 1-2004 ( МЭК 60335-1: 2001)]
1) Должно быть безопасное сверхнизкое напряжение
[Интент]
безопасное сверхнизкое напряжение
Напряжение в цепи, электрически отделенной от питающей сети безопасным разделительным трансформатором, не превышающее 50 В переменного тока или 50√2 В пульсирующего постоянного тока между проводниками или между любым проводником и землей
[ ГОСТ 30030-93]safety extra-low voltage
voltage not exceeding 42 V between conductors and between conductors and earth, the no-load voltage not exceeding 50 V
When safety extra-low voltage is obtained from the supply mains, it is to be through a safety isolating transformer or a convertor with separate windings, the insulation of which complies with double insulation or reinforced insulation requirements.
NOTE 1 - The voltage limits specified are based on the assumption that the safety isolating transformer is supplied at its rated voltage.
NOTE 2 - Safety extra-low voltage is also known as SELV.
[IEC 60335-1, ed. 4.0 (2001-05)]FR
très basse tension de sécurité
tension ne dépassant pas 42 V entre conducteurs et entre conducteurs et terre, la tension à vide ne dépassant pas 50 V.
Si une très basse tension de sécurité est obtenue à partir du réseau d’alimentation, elle doit être fournie par l'intermédiaire d'un transformateur de sécurité ou d'un convertisseur à enroulements séparés, dont l'isolation répond aux prescriptions de la double isolation ou de l'isolation renforcée.
NOTE 1 - Les limites prescrites pour la tension sont établies en supposant que le transformateur de sécurité est alimenté sous sa tension assignée.
NOTE 2 - La très basse tension de sécurité est également appelée TBTS.
[IEC 60335-1, ed. 4.0 (2001-05)]Тематики
EN
FR
Русско-французский словарь нормативно-технической терминологии > безопасное сверхнизкое напряжение
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