摘要:对SF6电气设备检测时发现某126kV断路器CO气体组分体积分数异常,根据分析,该断路器存在潜伏性故障。通过化学分析以及实验研究对可能产生CO的来源进行了分析,并对断路器进行解体检查,最终判断该断路器潜伏性故障产生的原因为润滑脂过量。笔者通过化学反应机理分析了润滑脂涂敷过量对断路器运行特性及SF6气体分解组分的影响。
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