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Об особенностях электродвигателей с повышенным скольжением

Что такое скольжение асинхронного двигателя?

Скольжение —это важная характеристика асинхронного электродвигателя, которая определяется как относительная разность скоростей вращения ротора и изменения переменного магнитного потока, создаваемого обмотками статора двигателя переменного тока. Измеряется в относительных единицах и в процентах.

Асинхронные трехфазные двигатели с повышенным скольжением

Двигатели специального назначения с повышенным скольжением строятся на базе унифицированных общепромышленных двигателей, а в маркировку добавляется буква «С» после названия серии (АИРС, АС, 5АС, АДМС, 4АС.). Габаритно-присоединительные размеры двигателей с повышенным скольжением соответствуют аналогичным размерам общепромышленных. Скольжение при номинальной нагрузке у этих электродвигателей выше, чем у базовых, а критическое скольжение составляет около 40%.

АИРСАИРСАИРС

Повышенное скольжение достигается двумя способами: занижением индукции путём увеличения витков в обмотке статора или (чаще всего) применением роторной обмотки, усиленной специальным сплавом, имеющим повышенное сопротивление. Если объяснять очень упрощенно, то чем больше сопротивление обмотки ротора, тем ток в роторе меньше и магнитное поле, создаваемое током в этой обмотке, тоже становится меньше. Это и обуславливает повышенное скольжение, магнитное поле статора как бы слабее «цепляет» ротор с ослабленным магнитным полем.

Применение двигателей с повышенным скольжением

Главным достоинством агрегатов повышенного скольжения является возможность работать с большими нагрузками, с неравномерной пульсирующей (ударной) нагрузкой, а также в повторно-кратковременном режиме с частыми пусками и остановками (режимы S2, S3, S4, S6). В таких условиях обычных стандартный двигатель может перегореть, т.к. он предназначен для работы с редкими остановками и пусками. В остальном подобные электродвигатели имеют практически полное сходство со стандартными моделями общепромышленных двигателей.

Электродвигатели с повышенным скольжением используются для привода механизмов с пульсирующей нагрузкой (например, поршневые компрессоры малой мощности) и с ударной нагрузкой (молоты, прессовое оборудование), а также для привода подъемно-транспортных машин. 

 

  • Мощность — 1.32 кВт
  • Обороты — 1500 об/мин
  • Габариты — 300х180х160 мм
  • Вес — 14.0 кг
  • Страна производитель — Россия
цена по запросу
  • Мощность — 0.8 кВт
  • Обороты — 1000 об/мин
  • Габариты — 300х180х160 мм
  • Вес — 14.0 кг
  • Страна производитель — Россия
цена по запросу
  • Мощность — 3.2 кВт
  • Обороты — 1500 об/мин
  • Габариты — 420х226х200 мм
  • Вес — 30.0 кг
  • Страна производитель — Россия
18 720 р.
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