电炉常见故障有哪些
    2014-4-29 11:12:30  文章来源:http://www.jnlzsb.com
    循环冷却水未打开或水压不够。这造成电接点水压表内的常开接点未接通, 中频柜内的整流电源板没有电, 即没有整流电压输出, 因而整流触发板及逆变触发板均无触发脉冲, 当然中频电源装置就没有反应。通常此时柜内的整流脉冲电压表、电流表均无显示。
    Circulating cooling water was not open, or the water pressure is not enough. This causes electric contact pressure in the table of the normally open contacts did not get through, intermediate frequency incase of rectifying power supply board without electricity, namely no rectifier voltage output, thus rectifier trigger board and no trigger inverter trigger board, medium frequency power supply device, of course, there is no response. Usually at this time incase of rectifier pulse voltmeter and ammeter no show.
    启动变压器T4烧坏, 或T4的初级线圈的熔丝烧断, 以及启动接触器KM2触点未闭合或接触不良。启动变压器T4设计为短时工作制, 正常工作时间仅为几秒钟。如果连续多次启动则线圈严重发热。因此当KM2 的主触头粘住或卡住时, T4的线圈很容易被烧坏。另外, 当T4初级线圈的熔丝9FU熔断以及KM2 主触点接触不良时, 都可使启动触发回路无电, 因而启动时中频柜无反应。环保采暖锅炉http://www.jnlzsb.com/
    Start the T4 transformer burn out, or T4 primary coil of the fuse, and start the contactor KM2 contact not closed or poor contact. Start the transformer of the short-time duty of T4 design normal working hours for only a few seconds. If multiple consecutive start coil severe fever. So when the main contact of KM2 stuck or jammed, T4 coil is easy to burn out. In addition, when the T4 primary fuse 9 fu fusing and KM2 main contact point contact, it can make the start trigger circuit without electricity, and intermediate frequency ark when starting.
    自动调频回路及逆变触发回路发生故障,导致触发脉冲发生紊乱及波形畸变,逆变换流时该导通的管子未导通,该关断的关不断,结果形成短路,产生过流。正常情况下,逆变桥对角线的脉冲应重迭,且波形应清楚、整齐,幅值、宽度都应符合要求。逆变桥相邻两组脉冲相位差应为180℃。本装置自动调频回路采用的是定时原则, 即调频信号取自中频电压、电流信号的合成。
    Automatic frequency control circuit and the inverter trigger circuit failure, cause a disorder and waveform distortion of the trigger pulse, inverse transformation flow when the conduction tube conduction, not closed break off constantly, the result is a short circuit, over-current. Under normal circumstances, the inverter bridge diagonal pulse should be overlapping, and waveform should be clear and tidy, amplitude, width should be conform to the requirements. Adjacent two groups of pulse phase inverter bridge should be 180 ℃. This device automatic frequency control loop USES is timing principle, namely the frequency modulation signal is taken from the synthesis of intermediate frequency voltage and current signals.
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