switching line meaning in English
开关线
Examples
- When switching the no - load overhead lines by alternating - current high - voltage circuit breaker which is a kind of daily operations in electric power system , over - voltage is probably bringed out and insulating property of the electric devices is breakdowned sometimes , especially , when occuring re - strike . the main purposes that the tests on switching line - charging current are performed in the laboratory are assessing re - strike performance of circuit - breakers . according to the test results , the design of the circuit - breaker is optimized and re - strike performance is improved
交流高压断路器是电力系统中最关键最重要的设备之一，断路器开合空载架空线路是电力系统中常见的操作，操作过程中通常会出现过电压，对系统绝缘造成威胁，严重时会破坏系统的绝缘性能，发生事故，随着电力系统电压等级的提高、输电线路不断延长及传输容量的增大，由操作过电压引起的绝缘闪络、设备破坏事故的几率更加突出。 - For the circuit - breakers of rated voltage 252kv up , the synthetic test methods are introduced according now condition because of the limitation of the transformer short - circuit capacity . the correlative prescribes on switching line - charging current in gb / t1984 - 200x " alternating - current high - voltage circuit - breaker " are discussed according to the test results and theoretic analysis
由于开合空载架空线路试验对电源侧的阻抗有明确的规定，这就要求试验电源必须具有足够大的短路容量，实验室很难满足要求，因此，一般对较高电压等级的断路器采用合成试验方法，本文介绍了利用现有条件，对252kv以上电压等级的断路器采用合成试验时的试验线路。