變壓器外文翻譯-其他專(zhuān)業(yè)-在線(xiàn)瀏覽
2025-03-24 08:11本頁(yè)面
【正文】 ssified into the following categories according to the arcquenching principles:air swetches oel ciryit breakers,minmumoil circuit breakers,airblast circuit breakers,the mageic air circuit breakers,minimumoilcircuit breakers,aerblast circuit breakers,the by voltage,insulation levelcurrent,interrupting capabilities,transient recovery coltage,interrupting tiome,and trip nameplate on a circuit breaker usually indicates:１ .The maximum steadystate current it can carry, 2. The maximum interrupting current,3. The maximum line voltage, interrupting time in cycles, The interrupting time in may last form 3 to 8 cycles on a 60 Hz system. To interrubt large currents quickly, we have to ensure rapid cooling. Highspeed interruption lunits the damage transmission lines and equipment and, equally important,it helps to mainmain the stability of the system whenever a contingency occurs. The main parts of a circuit breaker are usually:arcquenching chamber (or interrupter with moving and fixed contacts) operating mechanism and supporting structures. Air SwitchesWith increasing currents and voltages, springaction driving mechanisms were developed to reduce contact buring by fasteropening ,main contacts were fitted with arcing contacts of special material and shape,which opend after and closed before the main improvements of the air switch were the bursh
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