泵房电动机温度检测

Temperature Test for Pump Motors

介绍了油库1区爆炸危险场所轻质油泵房油泵电动机的运行情况及定子、转子绕组的结构特点。用具体数据说明了温升对异步电动机寿命的影响。给出了电动机温升的定义,并指出电动机允许温升主要是由定子绕组的绝缘材料决定的,而绝缘材料按其耐热程度又分为Y、A、E、B、F、H、C7个等级。用实例说明电动机温升与绝缘材料等级、环境温度的关系。介绍了电动机在运行中检测温度的三种方法(检温计法、直流电阻法、温度计法),以及每一种方法的具体操作、换算和适用情况。指出用手触摸来判定电动机的温度是不科学的,油库中小型异步电动机的温度检测主要是采用温度计法,以及在检测中应注意的具体事项。

The article introduces the characters of stator & rotator construction and working state of drivers employed at light product station in the easy explosive zone of tank farm. The concrete data indicates that temperature raise will influence service life of asynchronous machine. It also gives a definition of temperature raise and points out that the allowance of tenperature raise relies on insulating material used for stator which can be sorted into seven grades, Y、A、E、B、F、H、C, accordance with their unti-heat property. The relations among insulating material grades, environment temperature and temperature raise of drivers are stated clearly with some samples. It also introduces 3 methods (temperature test, thermometer test, direct current resistance test) employed in the temperature test process and concrete methods for operation, conversion and application. It points out that to judge the temperature of drivers by hand feeling is not scientific and sufficient, it also suggests that we should use thermometer test to judge temperature of small or medium sized asynchronous machines.