摘要
F-C真空接触器在1200KW以下电动机保护中得到了越来越多的应用,但是,保护整定和保护配合不当会引起保护的误判,严重影响该设备的可靠性和应用性。介绍了F-C真空接触器的特点,保护的整定计算方法、限流熔断器的选择。最后通过F-C真空接触器保护的动作曲线、电动机的过负荷曲线以及熔断器安-秒特性曲线分析了保护的配合方法。
F- C vacuum contactor have been More and more Applied in Electric motor protection below 1200 KW , however, the protection setting and the unsuitability of protection will cause misjudgment. It will Seriously impacted on the reliability and Utility of the equipment. This article introduces characteristics of the F - C vacuum contactor, method of calculating protection setting, choice of the limiting current fuse. In virtue of F - C the curve, mo- tor overload curve and fuse current - second curve, we analyzed the protection coordinate method, which is effective.
出处
《河南机电高等专科学校学报》
CAS
2009年第2期11-12,34,共3页
Journal of Henan Mechanical and Electrical Engineering College
关键词
真空接触器
保护整定
电动机
vacuum contactor
protection setting
electric motor
