НАЗНАЧЕНИЕ
Предназначены для присоединения передвижных механизмов к электрическим сетям при переменном напряжении 660 В частотой до 400 Гц или постоянном напряжении 1000 В, при изгибах с радиусом не менее 8 диаметров кабеля при допустимой температуре нагрева токопроводящих жил до +75 С. Для кабелей в тропическом исполнении к марке кабеля добавляют через дефис букву «Т». Для кабелей в холодостойком исполнении к марке кабеля добавляют через дефис буквы «ХЛ». Кабель марки КГН используют в тех случаях, когда возможно воздействие на оболочку дезинфицирующих и агрессивных веществ, применяемых в сельском хозяйстве, а также смазочных масел. В условное обозначение кабелей с нулевой жилой к марке добавляется буква «н», кабелей с двумя и тремя основными жилами и одной или двумя вспомогательными жилами добавляется буква «в».
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КОНСТРУКЦИЯ
- ТОКОПРОВОДЯЩАЯ ЖИЛА — медная, многопроволочная, круглой формы, 5 класса по ГОСТ 22483. Токопроводящие жилы кабелей, предназначенных для работы в районах с тропическим климатом, изготовлены из медной проволоки луженой оловом или покрытой оловянно-свинцовым припоем с содержанием олова не менее 40%.
РАЗДЕЛИТЕЛЬНЫЙ СЛОЙ — синтетическая пленка, допускается наложение изоляции без пленки при отсутствии залипания резины.
ИЗОЛЯЦИЯ — из резины изоляционной. Изолированные жилы имеют отличительную расцветку сплошную или в виде продольной полосы. Изоляция нулевой жилы выполняется голубого цвета; если нулевая жила отсутствует, голубой цвет применяется для расцветки любой жилы кроме заземляющей. Жила заземления имеет желто-зеленый цвет или обозначена цифрой 0. Расцветка одножильных и двухжильных кабелей не нормируется. Цвета красный, серый, белый и, если не в сочетании, зеленый и желтый не используются для расцветки жил многожильных кабелей.
СКРУТКА — изолированные жилы скручены с шагом скрутки не более 16 диаметров по скрутке.
РАЗДЕЛИТЕЛЬНЫЙ СЛОЙ — поверх скрученных жил — синтетическая пленка или тальк или другой аналогичный материал. Допускается изготовление без пленки при условии отделения изолированных жил от оболочки.
ОБОЛОЧКА — из резины шланговой. Оболочка кабелей, предназначенных для эксплуатации в районах с холодным климатом, изготовлена из резины шланговой в холодостойком исполнении. Наружная изоляция кабеля КГН изготавливается из шланговой маслостойкой резины, не распространяющей горение. Оболочка кабелей, предназначенных для эксплуатации в тропических условиях, изготовлена из антисептированной резины. В одножильных кабелях марки КГ допускается замена изоляции и оболочки изоляционно-защитной оболочкой. Номинальная толщина изоляционно-защитной оболочки равна сумме номинальных толщин изоляции и оболочки или удвоенной толщине изоляции.
КОЛИЧЕСТВО ЖИЛ — от 1 до 5-ти.
СЕЧЕНИЕ ЖИЛ, кв. мм — 0,75; 1,0; 1,5; 2,5; 4,0; 6,0; 10,0; 16,0; 25,0; 35,0; 50,0; 70,0; 95,0.
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ТЕХНИЧЕСКИЕ ХАРАКТЕРИСТИКИ
Климатическое исполнение У, ХЛ, Т, категория размещения — 1, 2, 3 по ГОСТ 15150-69
Температура эксплуатации кабелей:
марки КГ — от -40°С до +50°С
в холодостойком исполнении — от -60°С до +50°С
в тропическом исполнении — от -10°С до +55°С
Срок службы кабелей КГ (срок службы исчисляется с момента изготовления кабеля): 4 года.
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