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电机泄漏监测仪表为电导测量原理,用于检测电机内部湿度的变化,以防止电机定、转子绕组绝缘降低而烧毁电机。田湾核电站原电机泄漏仪表为饿供产品,由于备件采购困难且国内和第三国无匹配阻抗的产品可用于替代,因此根据现有产品的特性自主研发了替代产品。本文详细分析了电机泄漏监测仪表电路的构成原理,以及根据实际需求提出改进措施。经试验,自主研发的泄漏监测仪表达到了设计要求,能够用于各类电机的泄漏监测。
Motor leakage monitoring instrument for the conductance measurement principle, used to detect changes in the motor internal humidity to prevent the motor stator and rotor winding insulation reduces and burned the motor. The original electrical leakage meter at Tianwan Nuclear Power Plant is a hungry product. Due to the difficulty in purchasing spare parts and the absence of matching impedances between domestic and third countries for substitution, an alternative product has been independently developed based on the characteristics of the existing products. This text has analyzed the composition principle of the electrical machinery of the leakage monitor instrument circuit in detail, and put forward the improvement measure according to the actual demand. After testing, independent research and development of leakage monitoring instrumentation to meet the design requirements, can be used for various types of motor leakage monitoring.