论文部分内容阅读
近几年来,许多使用绕线型电机的部门纷纷使用频敏变阻器来代替原来的起动电阻,都认为确实有性能优良(其阻抗是随电机转差率自动无级变化的,因而极大地减少了电的和机械的冲击)、系统简单和坚固耐用等优点。我厂生产的TQ60/80塔式起重机上所使用的五台电机都是绕线型的,原来是使用凸轮控制器和起动电阻来控制的,总感到这套控制设备占地太大,而且必须固定在操作室的一侧,不利于操作。也曾想改用主令开关和接触器来控制起动电阻,但五台电
In recent years, many departments that use wire-wound motors have used frequency-sensitive rheostats instead of the original start-up resistors. They all believe that they have excellent performance. Their impedance is automatically changed steplessly with the motor slip, which greatly reduces the Electrical and mechanical impact), system simplicity and durability. The five motors used in the TQ60/80 tower cranes produced by our factory are all wound type. It was originally controlled by cam controllers and start resistors. We always feel that this control equipment occupies a large area and must be Fixed on the side of the operating room is not conducive to operation. Also wanted to use the master switch and contactor to control the starting resistor, but five sets of electricity