阐述了3/2接线中使用红外线测温仪监测刀闸接触状况是不准确的，并提出通过实验的方法得出接触电阻，确保方式改变后的安全运行。
It sets forth the inaccuracy of isolating-breaker measure By infrared-thermometer and gained contact resistance value in one and half breaker circuit , so as to ensure the security service of changing mode of operating .
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