摘要
本文对真空断路器切合高压电动机产生的过电压原理进行了阐述 ,对过电压保护的措施进行了分析 ,找出了吸收过电压的最佳装置—RC阻容保护装置 ,并通过在启动频繁的 780KW磨煤电动机真空断路器进行了录波试验 ,进一步证实了RC阻容保护在吸收过电压方面的优越性 ,通过参数选择 ,在部分电动机进行了应用试验 。
This paper explains overvoltage principle of a vacuum circuit breaker for cut-over high-voltage motor,analyzes measures for overvoltage protection,finds out optimum device to absorb overvoltage-RC protective device,and recording waves are tested by starting frequently vacuum circuit breaker of a grinder motor of 780KW,thus it proves further the superiority of RC protecticn in absorbing overvodtage.BY means of seclecting parameteers,application test is carried out in part of the motor and effect is very good
出处
《电气开关》
2000年第2期19-22,26,共5页
Electric Switchgear
