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鼠笼型异步电动机因价格低廉，性能可靠，在工业领域得到广泛应用。随着近年来各种新技术、新工艺的出现，对鼠笼型异步电动机的起动和停止提出了新的要求，而软起动器的出现满足了这一要求。１ 软起动器的特性传统的鼠笼型异步电动机的起动方式分为直接起动和降压起动２类。
Squirrel cage induction motor due to low prices, reliable performance, widely used in the industrial field. With the advent of various new technologies and new processes in recent years, new requirements have been put forward for starting and stopping squirrel cage induction motors, and the emergence of soft starters has met this requirement. A soft starter characteristics Traditional squirrel cage induction motor start-up method is divided into direct start and step-down start 2 categories.